WOLF RECOVERY, POLITICAL ECOLOGY, AND ENDANGERED
SPECIES
Charles E. Kay
has a Ph.D. in wildlife ecology and is adjunct professor of political
science at Utah State University and a Research Fellow for the Independent
Institute.
Table of Contents
NUMBER OF WOLVES
DO WOLVES LIMIT UNGULATE NUMBERS?
DO PREDATORS LIMIT HUNTING OPPORTUNITIES?
WOLF CONTROL
LIVESTOCK PREDATION
WHY SHOULD WOLVES BE REINTRODUCED TO
YELLOWSTONE?
HISTORICAL DISTRIBUTION AND ABUNDANCE
OF WOLVES IN YELLOWSTONE
THE ENVIRONMENTAL IMPACT STATEMENT
HIDDEN AGENDAS
EPILOGUE
REFERENCES
The federal government and environmental groups who would like to see
wolves returned to the West under protection of the Endangered Species Act
(ESA) claim that the public supports wolf recovery, and that science is on
their side. The former director of the National Park Service, for
instance, was quoted as saying that "there is little scientific basis
for most objections being raised to wolf reintroduction" (Fischer
1987:30). Others contend that "half-truths and misrepresentation of
facts continue to thwart" (Miller 1988:5) wolf recovery, and
Defenders of Wildlife has said that people who oppose wolf reintroduction
are "aggressively anti-science" (Neal 1992:A8). Are wolf
proponents right? Or are there aspects of this issue that they have
purposefully overlooked?
I am committed neither to having wolves in the West nor to keeping them
out. I am committed, though, to science being used responsibly in policy
debates, something I have not yet seen with wolf recovery. My analysis
indicates that the federal government and other wolf advocates have taken
liberties with the truth, with science, and with the Endangered Species
Act.
NUMBER OF WOLVES
Far and away the most important aspect of the wolf debate is how many
wolves we are talking about 100? 300? Or 2,000? The number of wolves is
central to any discussion of whether predation will limit ungulate
numbers, whether hunting might have to be curtailed or eliminated, and how
much livestock depredation might occur. When Defenders of Wildlife first
began to lobby for wolf reintroduction, they talked of "35 to 45
wolves" in all of Yellowstone Park (Randall 1981:31). This was echoed
by an early National Park Service (1975:5) report, which said, "the
final numbers [of wolves] that would winter within the park and be
compatible with other interests on adjoining lands are expected to range
between 30 and 40 wolves." Now plans call for 10 wolf packs totaling
approximately 100 wolves in Yellowstone.
In 1987, the U.S. Fish and Wildlife Service finalized its recovery plan
for wolves in the northern Rocky Mountains as mandated by the Endangered
Species Act. Besides Yellowstone, the plan addresses wolf recovery in
northwest Montana and central Idaho (see Figure 1). According to that
document, if a minimum of 10 wolf packs breed in any one recovery area for
three successive years, the wolves in that area are to be downlisted from
endangered to threatened status. When at least 10 breeding pairs have been
maintained for at least three successive years in all three recovery
areas, wolves are to be completely removed from the Endangered Species
List. While the wolf is listed as either threatened or endangered, hunting
and trapping are not to be permitted except by agents of the federal
government who may remove individual wolves that prey on livestock (U.S.
Fish and Wildlife Service 1987).

[Figure 1. (opposite) Northern Rocky Mountain wolf recovery
areas. This map is from the U.S. Fish and Wildlife Service’s (1987) wolf
recovery plan and shows how that agency has misled the public from the
very start. Note that all the wolf dispersal corridors follow the
Continental Divide or other mountaintops. Wolves, however, generally
disperse in early spring, when those areas are all deep with snow, and
they invariably disperse down valleys where there is little or no snow.
This was well known before the U.S. Fish and Wildlife Service developed
its wolf recovery plan, so the agency evidently lied when it developed
this figure. Western valleys, after all, are mostly private land, and
ranchers are worried that wolves will prey on their livestock. So if you
are trying to promote wolf recovery, which is what the U.S. Fish and
Wildlife Service has been doing, then the last place you want to tell the
public wolves will be dispersing is through those people’s backyards. By
claiming that wolves would disperse along high mountain chains that are,
for the most part, uninhabited and in public ownership, the U.S. Fish and
Wildlife Service hoped to reduce public opposition to wolf reintroduction.
Where wolves from Canada have naturally recolonized northwest Montana,
those animals have not only dispersed along valley bottoms, but denned
there as well.]
Government and environmental wolf advocates have assumed that breeding
packs would contain, on average, 10 wolves. This implies that each
recovery area would be downlisted from endangered to threatened at
approximately 100 wolves. At 100 wolves in each of the three recovery
areas, or 300 total wolves, the species would be removed from the
endangered list. According to the U.S. Fish and Wildlife Service
(1987:19), "the goal of 10 breeding pairs in each of three recovery
areas was established after extensive literature review and consultation
with a number of U.S. and Canadian biologists/wolf researchers," but
the agency published none of that evidence. So how did the government
actually arrive at these figures? And are they realistic?—that is, do
they meet ESA requirements?
To find out, I filed an official Freedom of Information Act request
with the U.S. Fish and Wildlife Service (Buterbaugh 1991). In reply, the
agency admitted that it had "not contracted or undertaken any studies
which deal with minimum viable populations of the Northern Rocky Mountain
wolf," and added that "there are no records in the files of our
Denver Regional Office or the Cheyenne Fish and Wildlife Enhancement
Office referencing any specific materials [which were] used in determining
recovery numbers for the Northern Rocky Mountain wolf." I brought
this to the attention of noted conservation biologist Dr. Michael Soule,
who said, "My guess is that the 10-pack number is more a political
than a biological threshold."
Because the U.S. Fish and Wildlife Service developed its recovery goals
of 10 wolf packs and 100 wolves in each area with little, or no,
supporting scientific evidence, all the government’s recent wolf
recovery reports, population models, and studies regarding possible
impacts on big-game hunting are arbitrary and capricious. They represent
not science but a masterful job of deception.
To meet the legal mandate of the Endangered Species Act and biological
requirements for minimum viable population size, 1,500 to 2,000 wolves as
one interbreeding population will be required (see Figure 2). Although the
science of determining minimum viable population size is still developing,
numbers alone are not the only criteria (Soule 1987). Genetic variation
must also be considered. Maintaining genetic variability is important
because inbreeding has serious consequences for the long-term health of
any population. Restrictive mating systems, where a few individuals do the
majority of breeding, greatly reduce a population’s effective size.
Assume, for instance, that you have 10 breeding packs totaling 100
wolves. Since the alpha male and female are usually the only breeding
individuals in each pack, a hypothetical population of 100 wolves in 10
packs has an effective breeding size of only 20 individuals per
generation. To maintain genetic variation sufficient to cope with
environmental uncertainty, and to guard against natural catastrophes, it
is necessary to maintain populations of at least 1,500 to 2,000
individuals (Woodruff 1989; Thomas 1990). A Canadian study recommended a
minimum of 1,450 wolves (Dueck 1990), and a recent U.S. study called for
2,000 (Dietz 1993).
Based on their arguments for large minimum viable populations in a host
of other species—the northern spotted owl and the grizzly bear being the
best-known examples—it is difficult to believe that environmental groups
have not voiced similar concerns over wolf recovery goals in the West.
After a federal court ruled that 2,180 pairs of, or approximately 4,500,
spotted owls were necessary to meet ESA requirements (Boyce and Irwin
1990:134) and environmentalists sued demanding 2,000 grizzlies, why would
only 300 wolves be enough? It appears that the 100-wolf recovery figures
are little more than an elaborate confidence game orchestrated by the
federal agencies and others.
The government proposed 100 wolves in each area, knowing that the
numbers would not be enough to meet ESA requirements of minimum viable
population size, and environmental groups did not object, knowing that 300
wolves would raise less political opposition than 1,500 to 2,000 wolves.
Wolves arrive and increase to 300. The government moves to delist.
Environment-alists sue and win. The wolf population is allowed to reach
1,500 or more. Environmentalists are happy, the federal agencies are
happy, and the public realizes—too late—what has happened.

[Figure 2. Projected area occupied by the 1,500 to 2,000 wolves
that will be needed to satisfy minimum viable population size requirements
and legal mandates in the northern Rockies. This may appear excessive, but
it is nearly identical to the area environmentalists have demanded for
grizzly bear recovery (Shaffer 1992). Plans for wolf recovery are under
way in Utah, Colorado, Washington, Arizona, and New Mexico as the wolf is
listed as an endangered species in all the 48 lower states except
Minnesota, where it is listed as threatened. Wolf reintroduction is also
being considered in New York and Maine.]
Minnesota provides an example of how the federal courts might rule on
the legal question of what wolf population size will be required before
that species can be delisted in the northern Rockies. In the early 1980s,
an estimated 1,200 to 1,500 wolves occupied 13 to 17 million acres in
Minnesota. At that time, the U.S. Fish and Wildlife Service proposed
transferring wolf management authority to the state. This would have
allowed wolves to be taken by hunters and trappers. In essence, though not
in fact, the government moved to delist the wolf. The federal agencies
were immediately sued by a consortium of 14 environmental groups led by
Sierra Club and Defenders of Wildlife (Woodsum 1984).
In granting the plaintiff’s request to prevent wolves from being
returned to state management, the judge noted that the Endangered Species
Act allows regulated taking (i.e., public hunting and trapping) only in
the "extraordinary case where population pressures within an
ecosystem cannot be otherwise relieved" (Sierra Club v. Clark, 577 F.
Supp. 783, 1984; Defenders of Wildlife 1984). Based on this ruling,
federal or state officials must be able to establish, by a preponderance
of evidence, that wolf population pressure in an ecosystem is so
extraordinary as to warrant public hunting and trapping. Given the limited
resources of the state and federal agencies and the biology of the
species, it will be virtually impossible ever to meet the bur-den of proof
established by the court under the Endangered Species Act. If 1,200 to
1,500 wolves were not enough to return that species to state management in
Minnesota, it appears doubtful that 100 animals in each of three separate
areas would be sufficient to delist wolves in the northern Rockies. There
are now more than 2,000 wolves in Minnesota, yet the U.S. Fish and
Wild-life Service still has not returned wolf management to the state.
There is also the additional problem of linkage. Wolves in Minnesota
have now clearly surpassed the number needed to remove that species from
the Endangered Species List (Harrison 1991), yet the U.S. Fish and
Wildlife Service has no plans to delist the eastern timber wolf because
wolf populations in the neighboring states of Wisconsin and Michigan are
far short of the goals established under the Eastern Timber Wolf Recovery
Plan (U.S. Fish and Wildlife Service 1978; Harrison 1991). Delisting the
wolf in one area, Minnesota, is linked to wolf numbers in two adjacent
states, so despite reaching the recovery goal in Minnesota, that wolf
population will not be returned to state management, will not be subjected
to hunting or trapping, will continue to increase, and will continue to
expand its range throughout Minnesota and adjacent states. Wolves have
already been reported in both North and South Dakota (Licht and Fritts
1994).
In fact, no one knows if the wolf population in Minnesota will ever be
delisted. Wolves have been transplanted into Wisconsin and Michigan, but
those animals, as well as natural migrants, have been killed by local
residents. If the illegal killings continue and if those acts prevent wolf
numbers in Wisconsin and Michigan from increasing, the wolf population in
Minnesota will never be removed from the Endangered Species List under the
present recovery plan. Even if there were 5,000 wolves in Minnesota, under
current regulations, the species would not be delisted. This holds one
state hostage to what happens in other areas.
A similar situation could develop in the northern Rockies. Remember
that under the approved recovery plan, once wolves in any one of the three
recovery areas reach 10 breeding packs (approximately 100 wolves) for
three consecutive years, the population in that area will be downlisted
from endangered to threatened status. That population, though, will remain
under federal control, and hunting or trapping of wolves by the public
will not be permitted. Only when all three areas simultaneously reach
their recovery goals will the species be removed from the Endangered
Species List and management returned to the states.
Assume that wolves are transplanted into or naturally reach central
Idaho and Yellowstone (this has already occurred—see below). Say the
wolves in Yellowstone reach their recovery goal of 100 animals and that
the wolves already in northwest Montana do the same, but for whatever
reason the wolves in central Idaho do not. Under this scenario and the
present recovery plan, wolves in Yellowstone and Montana would remain
under federal control, and those populations would be allowed to grow and
expand their range. Even if there were 1,000 wolves in Yellowstone and
another 1,000 in Montana, that species would remain on the Endangered
Species List unless there were also at least 100 wolves in central Idaho.
Sound far-fetched? Not at all. Remember, it is now happening with the
eastern timber wolf.
Based on legal precedents and biological requirements for minimum
viable populations, it is unlikely that published wolf recovery goals will
withstand legal scrutiny or be upheld by the courts. Instead of about 300
total wolves, biology and legal precedents mandate 1,500 to 2,000 wolves
as a continuous interbreeding population throughout the better part of
Idaho, most of western Montana, much of western Wyoming, and perhaps even
parts of eastern Oregon and Washington (see Figure 2). Needless to say,
1,500 to 2,000 wolves will have a much greater impact on ungulate numbers,
hunting opportunities, and livestock operations than that projected in
government reports. Since wolf populations can increase at 50 percent or
more each year, and since wolves are known to disperse up to 200 miles or
more, wolves will quickly repopulate the entire West.
It must also be remembered that the wolf is listed as an endangered or
threatened species in all the 48 lower states and that plans are under way
for wolf recovery in Utah, Colorado (Bennett 1994), Arizona, and New
Mexico. Washington state may already have more wolves than Montana. Wolf
reintroductions are being considered for New York and Maine (Van
Ballenberghe 1992), and the red wolf has already been released in the
Southeast. Under the present Endangered Species Act, wolves must be
restored to every state with suitable habitat; at least, that is how the
act is being interpreted by environmental organizations.
When I (Kay 1993) first published this analysis of wolf recovery
population goals, I was roundly condemned by the U. S. Fish and Wildlife
Service. Subsequent events, however, support the analysis I have just
presented. Montana and Idaho, for instance, recently issued draft plans
for when wolf recovery will be turned over to state managers (Rachael
1995, Ream 1995). Both documents claim that 20 wolf packs are needed in
each area before hunting and trapping will be allowed. Thus, they have
effectively doubled the number of wolves needed to meet ESA requirements
with as minimum of public review and without benefit of a supplemental EIS.
Moreover, one environmental group has announced its opposition to
delisting wolves in Montana, Idaho, and Wyoming until wolves are also
fully recovered in Colorado (Anonymous 1995).
DO WOLVES LIMIT UNGULATE NUMBERS?
During the late 1800s and well into the mid-1900s, it was universally
believed that predation in general, and wolf predation in particular, had
a devastating impact on ungulate numbers. Wolves were considered such
"a decided menace to the herds of elk, deer, mountain sheep
[bighorns], and antelope" that the Park Service
"exterminated" the wolf from Yellowstone by 1930 (Weaver
1978:9). Similar campaigns of eradication were common across North
America. Public opinion, though, began to change during the 1950s and
1960s. Today wolves are seen by many as an integral part of the
"balance of nature." According to this view, wolves rid the game
herds of the sick, the old, and the unfit, so wolf predation actually
benefits ungulate prey by preserving the health of the herds (Wilderness
Society 1987:12; Glick et al. 1991:72; Thompson 1991).
These same people believe that wolves regulate their own numbers
through social means, primarily territoriality, and therefore do not
overutilize their ungulate prey (National Park Service and Fish and
Wildlife Service 1990a:21, 1990b:1-57; Williams 1990:38). A corollary view
is that wolf predation results in compensatory survival and natality in
ungulate populations (National Park Service and Fish and Wildlife Service
1990b:3-42). According to this scenario, ungulate populations are food
limited, and wolf predation, by removing some animals from the population,
increases the food supply for the remaining ungulates. Since those animals
are then better fed, they die less frequently and increase their
birthrate, offsetting the effects of wolf predation. Scientific studies,
however, have shown this logic to be an inappropriate representation of
ungulate predator-prey systems.
Recent research in Alaska, as well as British Columbia, Yukon, Alberta,
and other Canadian provinces, indicates that wolves and other carnivores
limit ungulates more often than not (Seip 1989a, 1989b, 1991, 1992a,
1992b; Messier 1989a, 1989b, 1991, 1994; Bergerud 1990, 1992; Ballard
1991, 1992; Gasaway et al. 1992; Carbyn et al. 1993; Dale et al. 1994;
Hatter and Janz 1994). These studies can be summarized as follows. (1) In
many situations, wolves and other predators limit ungulate populations
below the level set by food resources; that is, ungulates are not resource
limited or "naturally regulated," and any compensatory response
of the ungulate population to predators is not enough to offset predation
losses. (2) Human predation and carnivore predation on ungulate
populations are additive, not compensatory. (3) If grizzly or black bears
are present, they often prey heavily on newborn and, to a lesser degree,
adult ungulates. Wolf and bear predation are additive, not compensatory,
and together they can have a major impact on ungulate numbers. In some
areas, grizzlies kill more ungulates than wolves (Gasaway et al. 1992).
(4) If ungulate populations have been reduced by severe weather, human
hunting, or other causes, wolves and other predators can drive ungulate
numbers even lower and maintain them at that level. This condition is
commonly called a predator pit, and there is no field evidence that
ungulates can escape from a predator pit even if hunting is banned, unless
wolves and other predators are reduced by direct management actions, that
is, predator control.
As Alaskan biologists have noted, "prey [ungulate] populations can
reach extremely low densities under natural conditions, contrary to the
‘balance of nature’ concept" (Gasaway et al. 1983:6). Today,
ungulate populations across most of Canada and Alaska are being kept at
low levels by the combined actions of carnivorous predators even in areas
where the ungulates are not hunted, such as in national parks.
It must be remembered that wolves limit ungulate numbers by reducing
recruitment and increasing adult mortality, not by killing off all the
game, instances of surplus killing notwithstanding. Take a hypothetical
population of 100 adult female ungulates (for this analysis, we need not
worry about the male segment of the herd). In any given year, a number of
adult females die from natural causes, disease, or predation. When
expressed as a percentage, this is termed the adult female mortality rate.
In that same year, a number of calves or fawns are born, but those young
also face disease, accidents, and predation, and only a few survive their
first year of life to join the adult population. This is called the
recruitment rate. For a stable population, recruitment must balance adult
mortality. If recruitment is less than adult mortality, the population
will decline, and if it is greater, numbers will increase (Bergerud 1990,
1992).
Research has shown that wolves and other predators prey most heavily on
young-of-the-year, which lowers the recruitment rate of the prey
populations. Predators also kill a few prime-age adults. By increasing
adult female mortality and at the same time lowering recruitment,
predators can cause ungulate populations to decline. Stabilizing
recruitment for caribou is about 15 female yearlings per 100 cows. Caribou
herds with few predators have recruitment rates of 20 to 40 per 100 cows,
which allows those populations to increase, while caribou herds subject to
heavy predation have recruitment rates of 10 or less (Bergerud 1990,
1992). So predation causes ungulate populations to gradually decline over
time—wolves do not normally wipe out game herds in a single year or two.
This is what happened in Canada and Alaska (Seip 1989b). During the
1950s and 1960s, when wolf control was widespread and effective, game
herds grew and the north country became known as a hunter’s paradise.
Government wolf control ended by 1970, and predator populations began to
expand, but it took 10 years or longer before significant declines were
seen in game herds. In Wood Buffalo National Park, for instance, there
were approximately 12,000 bison when wolf control was terminated; today
there are fewer than 3,500, and the population is still dropping. Wolf
predation of calves has been identified as the primary factor responsible
for that decline as the bison are not hunted (Carbyn et al. 1993).
Recent research has also demonstrated that multi-ungulate species
systems, such as exist in Yellowstone and throughout the West, are
actually less resilient than simpler predator-prey systems. Ungulate
species vary in their susceptibility to wolf predation, and "wolves
may limit the numbers of a more vulnerable, less abundant prey species
[such as deer, bighorn sheep, or ante-lope] when wolf numbers are set by a
less vulnerable, more abundant prey species," such as elk, moose, or
bison (National Park Service and Fish and Wildlife Service 1990b:4-6). It
has also been shown that wolves with access to alternative foods, such as
that available at garbage dumps, maintain higher populations and reduce
ungulate numbers to lower levels than would be possible if they did not
have those other food sources (Crete et al. 1981). This is why bear
predation can have a major impact on ungulate populations. Because the
number of bears is determined primarily by vegetal foods, bears can take
ungulates down to low levels without having an adverse effect on bear
numbers.
Prior to European settlement in British Columbia, moose were virtually
absent and woodland caribou were the most common ungulate. Wolves were
rare because they were tied to den sites during the breeding season and
therefore could not follow migrating caribou. Today, moose have spread
throughout the province, permitting wolves to increase as they now have an
alternative source of food. Those wolves, though, prey heavily on the more
vulnerable caribou whenever the latter can be located. This has led to the
widespread decline of woodland caribou in British Columbia. That is to
say, caribou have declined because of the addition of moose to the
predator-prey system (Bergerud et al. 1984; Bergerud and Elliot 1986; Seip
1989a, 1992a).
A similar situation may develop in Yellowstone and other wolf recovery
areas where large elk populations could permit wolves to take smaller
ungulate species, such as deer, to very low levels. In northern British
Columbia, wolves caused a substantial decline in the most vulnerable
ungulate species and then switched to the next most vulnerable ungulate
until it also declined. The wolves cascaded down the list of available
ungulate species from the most vulnerable to the least vulnerable until
all ungulate populations had been substantially reduced (Elliot 1989).
Across Canada and Alaska, moose and caribou populations not subject to
heavy predation have densities 10 times greater than populations where
carnivore numbers are high (Bergerud 1990, 1992; see Table 1).
In its rush to wolf recovery, the U.S. Fish and Wildlife Service has
tried to downplay the impacts wolves will have on western ungulate
populations. While the agency has acknowledged that "wolves can play
a role in depressing ungulate populations," it claims that "such
conditions are not the norm in North America" (National Park Service
and Fish and Wildlife Service 1990b:1-57). There is little evidence,
however, in the original Alaskan and Canadian research studies to support
this contention. The opposite appears to be more the norm; that is,
predation depresses ungulate populations even when humans are allowed to
kill predators.
The National Park Service and the Fish and Wildlife Service (1990a,
1990b, 1990c) also appear to have biased the computer codes on the two
wolf-ungulate models they commissioned to support wolf recovery—those
models predict that wolf recovery will have little impact on ungulate
populations or sport hunting. In written testimony presented to the
congressionally mandated wolf management committee, Dr. Robert Taylor, a
noted modeler and predation expert, said in reference to one of the
agencies’ models that he was "forced to conclude that this is a
wholly unacceptable effort. It relies on datasets of questionable utility…it
employs obsolete simulation approaches, and it reflects inadequate
attention to uncertainty in assumptions and parameters. Perhaps more
serious, I do not see how it can be much improved."
[Table 1. The impact of carnivore predation on caribou populations
in North America. In eastern Canadian forests where caribou have no
effective antipredator strategy, wolves can take caribou populations to
very low levels, especially in areas where wolves have alternative prey
such as white-tailed deer. By dispersing to high-elevation areas to calve,
mountain caribou avoid some of the effects of wolf predation, but wolves
still have a significant impact on those herds. By migrating long
distances, caribou can avoid most impacts of carnivore predation, but
those populations still have lower densities than herds without predators.
Long-distance migrations primarily evolved as a strategy to avoid
predation, not as a strategy to secure additional food (Bergerud 1990,
1992; Seip 1991; Crete and Huot 1993:2295). Mean caribou densities from
Seip (1991:47).]
Caribou population Predation Mean caribou
intensity density (no./mi2)
Predators absent None 19.30
Migratory herds Moderate 2.80
Mountain herds High 0.39
Eastern-forest herds Extreme 0.08
While Taylor found that the other model (Boyce 1992) "contain[ed]
some elements of a useful model for the YNP wolf-elk situation," he
nevertheless added that it "falls short, however, in several
aspects." According to Taylor, "the model is conceived in such
simplistic terms that it cannot, at best, be expected to provide much more
than a gross approximation to what will happen [if wolves are reintroduced
because] it misrepresents the predatory impact of wolves and their
internal population dynamics.…The sensitivity analysis is inadequate,
considering that many of the parameter values are mere guesses.…The net
effect of these problems is that none of the conclusions [on probable
wolf-ungulate interactions] can be justified at this time." Since his
testimony, Taylor obtained the computer codes for this model, made a
single, yet reasonable, change to one of the model’s assumptions of how
wolves interact with their ungulate prey, and found that the model’s
output was drastically different from what has been published by the
agencies; that is, the model is not robust.
Since the agencies modeled only the impact of 100 wolves in each of the
three recovery areas, not 1,500 to 2,000 interbreeding wolves, since the
models themselves are suspect, and since the agencies have not addressed
the additive impacts of bear or mountain lion predation, the conclusion
that wolves will have insignificant impacts on ungulate populations is not
warranted and cannot be sustained. If these factors had been properly
considered in a more realistic model, there is little doubt that the
results would have been vastly different and would not have supported
agency wolf recovery claims.
Environmentalists, however, like to cite Michigan’s Isle Royale
National Park as an example of a place where where large numbers of moose
and wolves live in harmony (Mech 1970; Peterson 1977, 1995; Peterson et
al. 1984; Peterson and Page 1988; McLaren and Peterson 1994). They also
cite Isle Royale as proof that wolves have no effect on ungulate numbers.
This, though, is incorrect because Isle Royale is not representative of
predator-prey systems in the rest of North America. Moose densities on
Isle Royale are 10 times higher than anywhere else in Canada where moose
are subject to carnivore predation (Messier 1994). There are three major
reasons for this difference.
First, of all North American ungulates, moose is the most difficult
species for wolves to kill. If they have a choice, wolves will usually
kill any ungulate besides moose. So the impact of wolves on Isle Royale’s
moose is less than if other ungulates inhabited the island. On islands off
the Alaskan coast, for instance, introduced wolves killed off all the
black-tailed deer (Merriam 1964; Klein 1970).
Second, there are no bears on Isle Royale. Again, this is not
comparable to mainland situations; as noted above, it is generally the
combined effect of wolf and bear predation that limits ungulate
populations. In other words, where black and/or grizzly bears are common,
as in the western parts of the United States and western Canada, the Isle
Royale situation simply does not apply.
Third, as an island in Lake Superior, there is no immigration of wolves
to Isle Royale. Moose first colonized the island in the 1920s, and a
single pair of wolves arrived during the 1950s, but since that time no
other wolves have reached the island (Wayne et al. 1991; Peterson 1995).
Lake Superior seldom freezes, and Isle Royale is 20 miles from the
mainland. Without immigration, when wolf numbers fall as the most
vulnerable moose are killed off, the moose population rebounds faster than
the wolves can recover. This allows the moose to "get ahead" of
the wolves, something that does not happen in other areas. On the
mainland, lone wolves and dispersing animals quickly reoccupy any area
vacated by other wolves. This keeps wolf numbers high and allows those
predators to exert a significant influence on their prey.
Finally, wolves and moose on Isle Royale do not represent some idyllic
"balance of nature"; instead, that national park exhibits many
signs of ecological degradation. Overgrazing has eliminated most
understory shrubs and aquatic plants that moose prefer (Murie 1934; Hansen
et al. 1973; Krefting 1974; Aho and Jordan 1979), and moose overbrowsing
is so severe that even common tree species are declining (Brandner 1986;
Risenhoover and Maass 1987; Brander et al. 1990; McLaren and Peterson
1994). By eliminating deciduous trees such as aspen, and at the same time
promoting the dominance of unpalatable species such as spruce, moose have
changed not only plant species composition but soil chemistry and soil
fertility as well (Pastor et al. 1987, 1988, 1993; McInnes et al. 1992;
Pastor and Naiman 1992). Clearly, moose overbrowsing has altered the
eco-system over the entire island. Archaeologically and historically,
there is no evidence that moose inhabited Isle Royale before the 1900s.
Any moose that reached the island in pre-Columbian times would soon have
fallen prey to Native Americans who, at least seasonally, inhabited Isle
Royale (Kay 1994).
DO PREDATORS LIMIT HUNTING OPPORTUNITIES?
Sport hunting is a multibillion-dollar industry in the West (Loomis et
al. 1985; Donnelly and Nelson 1986; Sorg and Nelson 1986; Duffield 1988).
Not only is hunting important to economies in the area, but it is also a
deeply held social tradition. So it is not surprising that many people
have expressed concern about the impact wolf predation will have on
western big-game herds and hunting opportunities. Groups who advocate wolf
recovery, however, such as the National Parks and Conservation
Association, contend that "fears over wolf impact on big-game hunting…are
unfounded" (Miller 1988:6). And according to government reports
"sport hunting for any big-game species need not be eliminated or
reduced just because wolves are restored" (National Park Service and
Fish and Wildlife Service 1990a, 1990b:4-77 to 4-78, 1990c:6). This simply
is not true, especially given the thousands of wolves that may ultimately
come to inhabit the West.
With few exceptions, big-game guides and outfitters remain in business
only if they can locate old-age male ungulates (i.e., trophy elk, trophy
deer, etc.) for their paying clientele. Many local sports hunters also
seek trophy animals. Fish and game departments in Wyoming, Montana, and
Idaho are already under intense public pressure to improve the
"quality" of big-game herds by managing for older-age males
(Wildlife Division 1985; Montana Dept. of Fish, Wildlife, and Parks 1986).
The departments have all instituted regulations that reduce male mortality
so that their game herds will contain a greater proportion of older-age
males. That hunters favor male ungulates is no secret. Even when
either-sex permits are issued, hunters take an overwhelming preponderance
of males.
Although it is commonly acknowledged that wolves and other carnivores
normally kill a disproportionate number of young-of-the-year and old
animals, few people realize that predators also take a disproportionate
number of males. In one Minnesota study, over 70 percent of wolf-killed
white-tailed deer were males, primarily older males (Mech and Frenzel
1971:41). Thus, there is little question that wolves and sport hunters
would compete for many of the same animals. With a large population of
wolves, fewer old-age male ungulates will be available to sports hunters.
As in the case of Wood Buffalo National Park, wolves alone can completely
eliminate any "surplus" ungulates that would otherwise be
available for human consumption.

[Figure 3. Model of Alaskan wolf-ungulate interactions simulated
under circumstances in which human harvest of moose triggered a decline in
both predator and prey. Without hunting, wolf, moose, and Dall sheep
numbers are low, but relatively stable. The addition of a small amount of
human moose harvest, though, destabilizes the entire system. Even after
hunting is halted, wolves continue to drive the moose population downward.
The wolves then switch to Dall sheep and drive those numbers down as well.
In this simulation, wolves go extinct before they can kill the few
remaining ungulates, allowing prey populations to recover. Grizzly bear
predation on newborn moose calves—and to a lesser extent, on adult moose—is
also important in this system, but that factor was not modeled separately.
Instead, grizzly predation was included in calculation of moose survival
rates internal to the model. In this simulation, hunters removed less than
8 percent of the moose population annually, which is not an excessive
harvest rate for systems without wolves, yet the moose population still
declined. This illustrates the additive nature of wolf and human
predation. In areas of Europe where predators are absent, hunters kill
more than 50 percent of the fall moose population each year without any
long-term decline in moose numbers. Adapted from Haber (1977) and Walters
et al. (1981).]
The combined effect of sport hunting and wolf predation on a common
ungulate prey can be seen in a computer simulation model developed for
Alaska. Without hunting, wolf, moose, and Dall sheep numbers are low, but
relatively stable. The addition of a small amount of human moose harvest,
though, destabilizes the entire system (see Figure 3). Even after hunting
is halted, wolves continue to drive the moose population downward. The
wolves then switch to Dall sheep and drive those numbers down as well. In
this simulation, wolves go extinct before they can kill the few remaining
ungulates, allowing prey populations to recover. This model was developed
by wolf advocate Gordon Haber, and he uses it to call for a reduction of,
or a ban on, sport hunting. According to Dr. Haber, ungulate populations
subjected to wolf-bear predation can, at best, maintain a human harvest
rate of only 6 to 7 percent, not the 20 to 30 percent common throughout
areas of North America where wolves are absent (Warrick 1992).
The relationship of predators, ungulates, and hunting on a larger scale
can be seen in a comparison of British Columbia with Sweden and Finland.
Both areas are roughly the same size and contain approximately equal
amounts of moose habitat. Yet during the 1980s, the overwinter moose
population in Sweden-Finland numbered around 400,000 animals and was
increasing, while the overwinter moose population in British Columbia
numbered around 240,000 and was declining even though habitat was not
limiting. Hunters in Sweden and Finland killed nearly 230,000 moose a
year, whereas hunters in British Columbia harvested only 12,000 to 14,000
animals per year (Child et al. 1991).
Although habitat conditions do vary, the overriding difference in the
two systems is a virtual absence of predators in the Scandinavian
countries. Wolves and bears are rare throughout Sweden and Finland, while
wolves, grizzlies, black bears, and mountain lions are common in most of
British Columbia. The effect of predation on hunting is seen when hunter
harvest is compared to the size of overwinter moose populations. In
Sweden-Finland, hunter harvest was 57 percent of the precalving moose
population (Cedarlund and Sand 1991) while it was only 5 percent in
British Columbia—an 11-fold difference. This suggests that unchecked
predation by a combination of carnivores can reduce hunting opportunities
by at least a factor of 10.
Simulation models of ungulate populations in eastern Idaho and along
the East Front portion of northwest Montana’s wolf recovery area
indicate that where hunter mortality balances recruitment in stable
ungulate populations, the addition of wolves will cause the game herds to
decline. Those studies conclude that "the presence of wolves means
that hunter harvest will likely [have to] be confined to male [ungulates]
most of the time" (Peek and Vales 1989; National Park Service and
Fish and Wildlife Service 1990b:3-164). In other words, antlerless seasons
will have to be eliminated for many western ungulate herds because most of
those populations are already subject to high levels of human harvest. So
even if you are just a meat hunter, your hunting opportunities will
decline precipitously as wolf populations expand to their full potential.
WOLF CONTROL
In its Northern Rocky Mountain Wolf Recovery Plan, the U.S. Fish and
Wildlife Service (1987:33) claimed that "if predation on big-game
herds is determined to be in significant conflict with management
objectives of a state wildlife agency, wolf control that would not
jeopardize wolf recovery would be considered." Other federal agencies
have suggested that wolves may have to be killed "to control
excessive predation on ungulates" (National Park Service and Fish and
Wildlife Service 1990a:3). As one government report put it, "because
some populations of prey [ungulates] that may be used by wolves are
already harvested [by hunters] at near maximum sustained yield…it may
indeed become biologically prudent to reduce wolf populations in some
areas" (National Park Service and Fish and Wildlife Service
1990b:1-58). Is wolf control, though, a viable option? After reviewing the
available evidence, I am forced to conclude that the federal government
and other wolf advocates have mentioned wolf control only to placate sport
hunters and to gain acceptance for wolf recovery, not as a statement of
fact within the realm of even remote possibility.
Experience in Canada suggests that certain environmental groups will
never allow wolves to be killed so that hunters can harvest more
ungulates. Debate over British Columbia plans to experimentally reduce the
number of wolves to see if ungulate populations would increase has been,
to say the least, extremely political, protracted, and divisive (Archibald
et al. 1991). In Alberta, ensuing controversy has prevented most wolf
control (Gunson 1992). A spokesman for the 150,000-member Canadian
Wildlife Federation declared that "wolf control should never be
considered unless a prey [ungulate] population is truly endangered, and
the problem should always include a [total] ban on hunting" (Haley
1984).
Even in Alaska, where there are approximately 7,000 wolves, intense
opposition, including several legal challenges, has effectively stopped
the state’s wolf control program. A recent proposal by the Big Game
Board to kill 300 wolves to increase moose availability for subsistence
and sport hunters was met with vocal objections orchestrated primarily by
outside animal-rights organizations. Under a threatened international
boycott of the state’s tourist industry, Alaska’s governor tabled
plans for wolf control (Williams 1993).
Experience also suggests that opposition to wolf control is seldom
ultimately based on scientific evidence, but rather on ethical and moral
concerns (Clarkson 1989). Speaking on behalf of the World Wildlife Fund
Canada, Monte Hummel (1989:140–42) asked, "Let’s assume for the
sake of argument that…in a politically neutral environment it can be
scientifically shown that wolves are indeed the primary limiting factor on
a given prey population, which incidentally I personally do believe to be
true in many cases.…Is it ethically justifiable to manipulate wild
[wolf] populations to ensure that human predation [hunting] can be
maximized?" The answer, he indicated, was no. A recent Canadian
opinion poll found that 90 percent of the people surveyed were opposed to
"killing of wolves to provide more big game for the hunting
community" (Hoffos 1987:55).
Given these precedents, there can be little doubt that a wolf control
program anywhere in the West would be subjected to intense scrutiny by the
national media and the federal courts. The ensuing battle would pit sport
hunters, ranchers, and others against antihunting and animal-rights groups
from across the nation and around the world. Given the depth of emotions
elicited in the past, the battle would be a political bloodbath. All
parties in the western wolf debate should fully understand that wolf
control, and especially wolf control to increase ungulate numbers for
hunters, is unlikely to be allowed by the court of national public
opinion, even if it were permitted by judicial courts. This, of course,
assumes that wolves would somehow lose their endangered-species
protection, for there is not a court in the land that would allow wolf
control as long as that animal remains on the Endangered Species List.
It should also be realized that the wolf’s impact on ungulate herds is
really not a scientific issue with most wolf advocates. Their desire to
have large numbers of wolves is based on value judgments (see below). As
one person noted, "The wolf is almost a religious symbol to these
people" (Dawson 1988). There is nothing wrong with value judgments. I
object, however, when those arguments are shrouded in scientific cloth and
the Endangered Species Act.
LIVESTOCK PREDATION
Most opposition to wolf recovery has come from livestock interests and
their political allies. Even if wolves are somehow limited to only 100
animals in Yellowstone Park, approximately 20 to 40 wolves would disperse
to surrounding areas each year, a fact whose significance has not been
lost on ranchers bordering the park. In Montana, where wolves are
naturally recolonizing the northern Rockies, individual wolves have moved
"over 300 miles in just a few days" (Turner 1991) and one wolf
was killed approximately 500 airline miles from where it was born (Pletscher
et al. 1991; Ream et al. 1991). Even in areas with established wolf
populations, wolves commonly disperse 30 to 100 miles, and dispersing
wolves occasionally travel 400 to 500 miles. Stockmen are worried not only
about how many of their sheep and cattle wolves may kill, but also about
the costs associated with changing their management practices to
accommodate wolves.
To alleviate these concerns, the U.S. Fish and Wildlife Service has
developed interim wolf control plans for its northern Rocky Mountain
recovery areas, including Yellowstone. According to those documents,
wolves that prey on livestock will be killed or otherwise removed at the
federal government’s expense. The "control plans are based on the
concept of wolf control to enhance propagation or survival of the species.
Control of problem wolves is expected to reduce the hostility towards
wolves that would result in illegal killing.…[B]y removing the few
wolves that kill livestock and [thereby] enhancing the survival chances of
non-offending wolves, the FWS believes its control program will actually
contribute to the recovery of the wolf in the Northern Rocky
Mountains" (National Park Service and Fish and Wildlife Service
1990b:1-29).
The federal agencies have also produced evidence showing that actual
livestock depredations have been remarkably low in Minnesota, Alberta, and
British Columbia (Fritts et al. 1992). Livestock operators, however, have
questioned the applicability of those data to the western United States.
They point out that the situations may not be comparable because the
topography is different, ungulates make longer seasonal migrations, and
colonizing wolves may behave differently than established populations, and
besides, wolves in Canada can be shot on sight; that is, those wolves are
not protected by the Endangered Species Act. Experience with Montana’s
naturally recovering wolves tends to support their concerns.
Most ungulates in the northern Rockies winter at low elevations near
private lands and domestic livestock. Wolves would have to winter in those
same areas, and they would probably also den there because pups are born
early in the spring while most ungulates are still on their winter ranges.
The ungulates, however, usually migrate to higher-elevation summering
areas before wolf pups can leave their dens. This would place breeding
wolves with high food demands in areas with few wild ungulates but
abundant livestock. These circumstances may force wolves to prey on
livestock to support their growing young.
This appears to be what has happened in Montana. For whatever reason,
wolves outside of the Glacier National Park–North Fork of the Flathead
area, where there are few livestock, have all denned in valley bottoms in
relatively close proximity to humans. They have not stayed in wilderness
areas. To date, nearly every one of those wolf packs has eventually turned
to livestock and has had to be controlled. Based on the pattern observed
in Montana, reintroduced wolves may cause a number of problems for
neighboring ranchers. Within a week or so after wolves were transplanted
to central Idaho in early 1995 (see below), one of those animals had
already turned to killing livestock (Burns 1995). When wolves eventually
reduce game populations (see above), the wolves will then be forced to
kill even more livestock.
In Canada and Minnesota, the government compensates ranchers when they
can prove that wolves killed their livestock, but this is not true in the
western states. The federal government has no wolf compensation program,
nor do state agencies; thus, wolf-killed livestock is another example of
the government taking private property under the Endangered Species Act
without compensation. In response to these concerns and in an effort to
enhance wolf recovery by preventing "the development of a
shoot-on-sight mentality," Defenders of Wildlife raised $100,000 to
compensate ranchers for animals that will be lost to wolves. Those claims,
though, must first be verified by federal agents or local officials
(Fischer 1989, 1995). While this has been hailed by most wolf advocates as
a good-faith effort on their part, it has been soundly criticized by the
radical environmental group Earth First!, which sees Defenders’
compensation program as another subsidy to ranchers. It believes wolves
have "earned their right to be here merely by being native to North
America. Earth First! favors a ram-it-down-their-throat approach" (Skeele
1991).
For their part, many ranchers are not entirely pleased with Defenders’
compensation program, claiming that they are not raising animals to feed
to wolves or other predators. Other ranchers have pointed out that
Defenders will compensate them only for the market value of their dead
livestock. For instance, if a wolf-killed cow had a market value of $600,
the rancher would be given a check for that amount. The ranchers, on the
other hand, claim that it actually costs them more than $600 to replace
that cow. They point out that there are time costs and other expenses
involved in (1) finding the kill, (2) getting a government agent to verify
the kill, and (3) obtaining a replacement animal from a distant market and
transporting it back to the ranch.
My personal experience with insurance suggests that the ranchers’
position has some merit. When I first heard this argument, I must admit, I
did not give it much thought—until I was robbed. While conducting
research in Yellowstone, someone cut the back out of my tent and stole all
my camping equipment. First I had to report the theft and have the sheriff
fill out a report (verify the kill); then I had to deal repeatedly with my
insurance company before receiving compensation; and finally I had to
replace all the lost equipment. Not only was my regular work schedule
interrupted, for which I received no compensation, but I also spent the
better part of two days finding and buying replacement equipment. The
nearest town of any was 80 miles away, which would also be true if one had
to buy livestock at auction. All in all, this experience convinced me that
livestock interests have raised a valid point that should be given due
consideration. Moreover, there is also a major problem in proving that
missing livestock were actually killed by wolves.
Although some have viewed Defenders’ compensation program as an
innovative free-market approach to endangered species preservation, others
claim it is only a public relations ploy designed to promote wolf
introductions. As opponents note, Defenders has said that it will pay for
verified livestock losses only as long as wolves are on the Endangered
Species List (Fischer 1995). So when wolf populations become high and
livestock losses increase, Defenders will no longer compensate ranchers.
In addition, since Defenders’ program has no force in law (Fischer
1995), it can be terminated at any time even if wolves are still on the
Endangered Species List.
The federal agencies have stated that when wolf "depredations on
livestock occur, control actions are imperative" and that offending
animals will be dealt with "quickly and effectively" (National
Park Service and Fish and Wildlife Service 1990b:1-55). The Park Service
has stated that "wolves will be easy prey for trappers if killing
them should become necessary" (Wise 1987). Experience in Montana,
however, suggests that it may be difficult and expensive to control
offending animals. When a pack of six wolves killed livestock on the
Blackfeet Indian Reservation, government trappers were summoned to remove
the offending animals. By its own admission, the federal government spent
$41,000 on that wolf control effort, yet all the wolves were never killed
(Dawson 1988). Another source put the total, "all costs
considered," at perhaps $100,000 (Jonkel 1987).
In at least one case in Montana, members of the Wolf Action Group, an
offshoot of Earth First!, attempted to disrupt government efforts to trap
a wolf that had killed livestock near Kalispell (U.S. Fish and Wildlife
Service 1991:14). Since wolves are very sensitive to human
disturbances, all one has to do to defeat wolf control is to leave
human scent on or near government traps, that is, urinate on them.
If it becomes common practice for individuals or certain groups to
interfere with government trappers, the offending wolves will be
much more difficult to catch. Groups such as PETA (People for the Ethical Treatment of Animals) who
oppose all hunting and killing of wildlife, have advised members to go
into the field and physically prevent animals from being killed. If even a
small, but dedicated, number of people decide that all killing of wolves
should be prevented, the government’s claim that depredating wolves
will be "quickly" re-moved may not be realized. In addition,
some of the more radical environmental groups have suggested that they may
sue to stop all wolf control. They contend that even killing depredating
wolves is unlawful under the Endangered Species Act (Goble 1992).
WHY SHOULD WOLVES BE REINTRODUCED TO YELLOWSTONE?
During the early 1970s, the Park Service began to manage Yellowstone
Park under a program called "natural regulation," where nature
is allowed to take its course with minimal human interference. Without
exception, environmentalists have been widely enthusiastic about
"natural regulation." The same people who wholeheartedly are
behind "natural regulation" also contend that wolves are needed,
according to former Utah Congressman Wayne Owens, "to restore a
balance to Yellowstone National Park. The wolf is the only missing
piece" (Fischer 1988:17). "A principal predator is missing.…[T]o
have a large population of ungulates without such a predator in the system
is not natural. It’s an absence that has ecological significance" (Cauble
1986:24). When asked if they felt that wolves could help "maintain
balanced wildlife populations" in Yellowstone, 91 per-cent of those
interviewed said yes (MacNaught 1987:519). And others contend that
Yellowstone is "a fairly intact ecosystem, except for the wolf. It’s
the missing link" (Schneider 1981:8).
Some have gone so far as to claim that in the absence of wolves,
Yellowstone’s elk and other ungulates have overpopulated the park and
overgrazed the range. Speaking for Defenders of Wildlife, Dick Randall
(1980:189) said, "The solution to a good part of the [elk]
overpopulation problem comes softly on four feet, weighs about a hundred
pounds, believes strongly in the family virtues, and has been absent from
Yellowstone for about the same length of time the elk problem has plagued
park officials. Of course: the grey wolf." Thomas Miller (1988:7) of
the National Parks and Conservation Association added that "the
benefits from restoration of the wolf to its native Yellowstone include
prevention of habitat deterioration and overpopulation by ungulates."
In recent testimony before Congress, even Secretary of the Interior Bruce
Babbitt contended that wolves are needed to control Yellowstone’s
soaring elk population.
Not only are claims that wolves would lower ungulate populations and
restore a balance with the plant communities logically inconsistent with
assertions that wolves would not limit ungulates or hunting opportunities
(see above), but proponents of reintroduction, who all support
"natural regulation," apparently do not realize that their
concept of the wolf’s place in the natural scheme of things is contrary
to one of the major assumptions of the "natural regulation"
paradigm. According to "natural regulation," predation is an
assisting, but nonessential, adjunct to the regulation of ungulate
populations. Ungulates are limited by resources (food). If wolves were
present, they would kill only the animals slated by nature to die from
other causes, primarily starvation, so, wolves would not lower Yellowstone’s
ungulate populations (Kay 1990).
The Park Service has never said that wolves must be restored to
Yellowstone to prevent elk and other ungulate numbers from becoming so
large that those herbivores would overuse their range. So if you believe
that wolves need to be reintroduced in Yellowstone to restore a
"balance of nature," control ungulate numbers, or prevent range
abuse, logic dictates that you also have to be opposed to "natural
regulation." You cannot have it both ways.
Moreover, claims that wolves need to be restored because "every
species that was in the park when white men first came to the region is
still there, except one [the wolf]" (Dawidoff 1992:40) are also
racist, as are similar claims about restoring the wolf as the system’s
top predator. Native Americans were the ultimate keystone predator, not
wolves, and Native Americans once structured Yellowstone and other
ecosystems (Kay 1994, 1995). If environmentalists really want to restore
Yellowstone’s preeminent predator, then they should be lobbying for the
return of the park to Native Americans. Instead, by inference, they
denigrate native peoples as primitive starving savages, or worse, as
original poor conservationists.
HISTORICAL DISTRIBUTION AND ABUNDANCE OF
WOLVES IN YELLOWSTONE
The plan to reintroduce wolves in Yellowstone is predicated, in part,
on the premise that large numbers of wolves inhabited that ecosystem
before the Park Service eliminated them from the park (Askins 1992; Wright
1992:144-45). According to some, "[wolves] were a relatively common
sight in Yellowstone when it was declared the nation’s first national
park in 1872" (Anonymous 1987). Dick Randall (1980:188), of Defenders
of Wildlife, claimed that "when trappers and explorers reported on
the Yellowstone region in the mid-1800s, they sang [of] a land teeming
with bison, elk, mule deer, bighorn sheep, and antelope. The great
carnivores—grey wolf, grizzly bear, and mountain lion—flourished."
As part of my scientific research in the Yellowstone Ecosystem, I
conducted a continuous-time analysis of journals left by early explorers,
systematically recording all observations of ungulates and other large
mammals, including wolves. Between 1835 and 1876, 20 different expeditions
spent a total of 765 days traveling through the Yellowstone Ecosystem on
foot or horseback, yet no one reported seeing or killing even a single
wolf. Wolf sign, primarily howling, was reported on only three occasions.
Since these early observers lacked scientific training, they easily could
have mistaken coyote howls or other animal calls for wolves. Besides, when
these journals were written, even trained scientists called coyotes wolves
or prairie wolves. There certainly is no evidence in historical journals
which even remotely suggests that large numbers of wolves were common in
Yellowstone during the 1835–1876 period (Kay in press).
Other records indicate that wolves were also not particularly common
after Yellowstone Park was established. During the late 1800s and early
1900s, few observations were recorded of wolves in the park. "Wolves
inhabited the area in unknown but seemingly low densities" (U.S. Fish
and Wildlife Service 1987:1). From 1914 to 1926, when the Park Service was
actively working to eradicate wolves from Yellowstone, they killed 136
wolves. This may seem like a lot, but it included only 56 adults over a
13-year interval. Park Service records also suggest that during this time
there were, at most, only four wolf packs in the park, and possibly only
two (Weaver 1978:11). So, available information does not support the
belief that large numbers of wolves inhabited Yellowstone at any point in
recorded history. There is no support for the belief that restoring 10
wolf packs to the park would reestablish "natural" conditions.
In fact, the data suggest that wolves were always rare in Yellowstone.
Native hunting was so intense that historical and pre-Columbian ungu-late
populations were very low, which, in turn, accounts for the relative
scarcity of carnivorous species such as wolves (Kay 1994, 1995, in press).
THE ENVIRONMENTAL IMPACT STATEMENT
In June 1993, the U.S. Fish and Wildlife Service released its draft
Environmental Impact Statement (EIS) for wolf recovery in the northern
Rockies. After a series of public hearings and after accepting written
comments, the agency issued its final EIS in April 1994. It received over
160,000 comments on the draft EIS, the most ever received under the
Endangered Species Act. Public comments ran 2 to 1 in favor of restoring
wolves to the northern Rockies. Under the agency’s preferred
alternative, naturally recolonizing wolves in northwest Montana were given
full ESA protection. In Yellowstone and central Idaho, though, the agency
proposed to reintroduce wolves as nonessential experimental populations.
This was done to deflect local criticism and to allow ranchers more
latitude in shooting wolves caught in the act of killing livestock on
private land (U.S. Fish and Wildlife Service 1994, Fischer 1995).
As of early 1995, at least two different lawsuits had been filed to
block wolf recovery, but the federal courts refused to grant the
plaintiffs injunctive relief. Thus, the U.S. Fish and Wildlife Service,
with the consent of the Alberta provincial government, began capturing
wolves in Canada. So far, over a dozen wolves have been released in
central Idaho (termed a hard release) while Yellowstone’s wolves were
held in three large fenced enclosures on the park’s northern range. This
is termed a soft release, and it is hoped that this will encourage the
wolves to remain in the park.
Some wolves released in Yellowstone quickly left the park and at least
three have been shot in violation of the ESA. Other Yellowstone wolves
killed livestock and at least one domestic dog in the park. Wolves
released into central Idaho have also wandered widely and killed
livestock. Nevertheless, as this is being written (early 1996), the U.S.
Fish and Wildlife Service is capturing more Canadian wolves for release in
Idaho and Yellowstone
The U.S. Fish and Wildlife Service has admitted that wolf recovery will
cost at least $12 million, but that figure may be low, and it certainly
does not reflect the costs of full wolf recovery in the West.
Nevertheless, this still comes to $40,000 per wolf and is an enormous
expense for a species that is not biologically endangered. After all,
there are an estimated 60,000 wolves in Canada (Theberge 1991), 2,000 in
Minnesota (Harrison 1991), and another 7,000 in Alaska (Van Ballenberghe
1992). Wolves are on the Endangered Species List only because the ESA
protects subspecies and populations as well as species.
Noted Montana biologist Dr. Charles Jonkel (1987) has raised an
interesting question regarding wolves. He has wondered if the money and
political capital being spent to reintroduce wolves into Yellowstone and
central Idaho might not be better spent on preserving wolves and wolf
habitat in other parts of North America. How much time and money will be
spent to put 100 or so wolves in Yellowstone? Dr. Jonkel has suggested
that those same efforts, if redirected, could perhaps save thousands of
wolves in other areas—places where wolves presently exist, but where
development threatens their continued survival.
Others have suggested that funds expended on wolf recovery might be
better spent on truly rare animals such as whooping cranes, black-footed
ferrets, or other globally endangered species. Testifying before the U.S.
Senate Committee on Energy and Natural Resources, Kay Kool (1990), former
Director of the Montana Department of Fish, Wildlife, and Parks, noted
that "the attention and resources focused on the wolf compete with
and drain the limited federal dollars and energy needed to keep truly
endangered species from extinction."
The U.S. Fish and Wildlife Service claims that it needs billions of
dollars to carry out its mandate under the Endangered Species Act.
Currently about $100 million is being spent annually by state and federal
agencies to protect endangered species. Over one-half of that total,
though, goes to less than 2 percent of the species listed as threatened or
endangered. Instead of spending its budget on the animals and plants most
in need of protection, the agencies spend their funds on "charismatic
megafauna" such as grizzly bears and wolves (Mann and Plummer 1993;
Dwyer et al. 1995: 738-739). This may garner the agencies public support,
but it does little to protect the majority of endangered species. With so
many other species in much greater need, it is easy to see why many
conservationists consider wolf recovery an inappropriate use of
government funds. But then, wolf recovery has very little to do with
wolves.
HIDDEN AGENDAS
As University of Wyoming geography professor James Thompson (1993:165)
recently noted, "wolf recovery is [only] a ‘stalking horse’ for
the larger issue of land use change." Even environmentalists have
admitted that "on the deepest level the issue of…wolf recovery is
not about wolves. [Instead] it is about control of the west" (Askins
1993:5). Simply put, environmentalists are using wolf recovery and the
Endangered Species Act to run ranchers out of the country and to thwart
multiple use of public lands. It is also a way for animal-rights and
antihunting groups to ban all hunting and use of wildlife. Is this what
Congress had in mind when it passed the Endangered Species Act? There is
no evidence to even remotely suggest that it is.
EPILOGUE
Alaskan and Canadian wildlife agencies are concerned that wolf
advocates may unwittingly be helping to destroy wildlife habitat,
wilderness, and eventually wolves themselves (Gasaway 1989:134). In
British Columbia, expanding wolf populations have decimated game herds to
the point that today there are fewer hunters in the province, which
translates into less public support when wildlife officials have tried to
oppose development projects (Hatter and Janz 1994). Black-tailed deer on
Vancouver Island, for instance, need old-growth forest to survive during
winters—forests that are worth millions of dollars if they are logged.
With few deer left to protect, the B.C. government has been reluctant to
curtail logging. The same is true in Alaska’s coastal forests. More
wolves = fewer deer = less public support for wildlife = more clear-cuts.
After reviewing the northern Rockies wolf recovery plan, biologists
from the University of Idaho concluded that "in the presence of
wolves, more intensive monitoring of both predator and prey will be
needed" (Peek and Vales 1989; National Park Service and Fish and
Wildlife Service 1990b:3-164). This increased responsibility and its
associated costs will fall to western state fish and game agencies, which
are funded solely from hunting-license sales and federal excise taxes on
sporting goods, not general fund appropriations. When wolves eventually
decimate ungulate herds, hunting will have to be curtailed, so revenues
available to the state wildlife agencies will fall precipitously. Who then
will pay for the needed monitoring, and, for that matter, wildlife
management in general? Sportsmen, after all, are the ones who have done
the most to nurture and protect the West’s wildlife populations, not
environmentalists. Wolf recovery is a bad idea whose time has apparently
come—unless, of course, the Endangered Species Act can be changed.
References
Aho, R. W., & P. A. Jordan. (1979). Production of aquatic macro-phytes
and its utilization by moose on Isle Royale National Park. In R. M. Linn
(Ed.), Proceedings of the First Conference on Scientific Research in
National Parks. pp. 341-348. USDI National Park Service Transactions
and Proceedings Series No. 5.
Anonymous. (1987, February 11). Gray wolves may again howl in
Yellowstone. Logan Herald Journal.
Anonymous. (1995, November 24). Delisting could hurt wolf recovery,
advocate claims. Casper Star Tribune, Casper, Wyo., p. B1.
Archibald, W. R., Janz, D., & Atkinson, K. (1991). Wolf control: A
management dilemma. Trans. N.A. Wild. and Nat. Res. Conf., 56, 497-511.
Askins, R. (1992). View of the Wolf Fund. Wyoming Wildlife, 56(1),
14-17.
Askins, R. (1993, Winter-Spring). From the director. The Wolf Fund, pp.
1, 4-5.
Ballard, W. B. (1991). Management of predators and their prey: The
Alaskan experience. Trans. N.A. Wildl. and Nat. Res. Conf., 56,
527-538.
Ballard, W. B. (1992). Bear predation on moose: A review of recent
North American studies and their implications. Alces, Supplement 1,
162-176.
Bennett, L. E. (1994). Colorado gray wolf recovery: A biological
feasibility study—Final report—31 March 1994. Unpublished Contract
report from the University of Wyoming Fish and Wildlife Cooperative
Research Unit to the U.S. Fish and Wildlife Service, Denver, Colo.
Bergerud, A. T. (1990). Rareness as an anti-predator strategy to reduce
predation risk. Transactions of 19th I.U.G.B. Congress. Proceedings held
September 1989. Trondheim, Norway. Vol. 1. Population Dynamics. pp.
15-25.
Bergerud, A. T. (1992). Rareness as an antipredator strategy to reduce
predation risk for moose and caribou. In D. M. McCullough, and R. Barrett
(Eds.), Wildlife 2001: Populations. pp. 1008-1021. New York:
Elsevier Applied Science.
Bergerud, A. T., H. E. Butler, & D. R. Miller, (1984). Antipredator
tactics of calving caribou: Dispersion in mountains. Can. J. Zool.,
62, 1566-1575.
Bergerud, A. T., & J. P. Elliot, (1986). Dynamics of caribou and
wolves in northern British Columbia. Can. J. Zool., 64, 1515-1529.
Boyce, M. S. (1992). Wolf recovery for Yellowstone National Park: A
simulation model. In D. M. McCullough & R. Barrett (Eds.), Wildlife
2001: Populations. pp. 123-138. New York: Elsevier Applied Science.
Boyce, M. S., & L. L. Irwin. (1990). Viable populations of spotted
owls for management of old growth forests in the Pacific Northwest. In R.
S. Mitchell, C. J. Shevick, & D. J. Leopold (Eds.), Ecosystem
management: Rare species and significant habitats. pp. 133-135.
Albany, New York: New York State Museum.
Brandner, T. A. (1986). Density dependent effects of moose herbivory on
balsam fir in Isle Royale National Park, Michigan. M.S. Thesis, Michigan
Technological University, Houghton, MI.
Brandner, T. A., R. O. Peterson, & K. L. Risenhoover. (1990).
Balsam fir on Isle Royale: Effects of moose herbivory and population
density. Ecology, 71, 155-164.
Burns, C. (1995). From freedom to FedEx: Wolf B13 killed. High
Country News, 27(3), 5.
Buterbaugh, G. L. (1991). Freedom of Information Act Request in
response to correspondence from Randy T. Simmons, Director, Institute of
Political Economy, Utah State University, Logan. July 18, pp. 2+
attachments.
Carbyn, L. N., S. M. Oosenbrug, & D. W. Anions, (1993). Wolves,
bison, and the dynamics related to the Peace-Athabasca Delta in Canada’s
Wood Buffalo National Park. Edmonton, AB: University of Alberta.
Circumpolar Research Series 4.
Cauble, C. (1986). Return of the native: The Park Service calls for
reintroduction of Yellowstone’s missing predator…the wolf. National
Parks Magazine, 60(7-8), 24-29.
Cederlund, G. N., & H. K. J. Sand, (1991). Population dynamics and
yield of a moose population without predators. Alces, 27, 31-40.
American’s wilderness heritage (pp. 231-264). New Haven, Conn.:
Yale University Press.
Child, K. N., S. P. Barry, & P. A. Aitken, (1991). Moose mortality
on highways and railways in British Columbia. Alces, 27, 41-49.
Clarkson, P. L. (1989). Wolf management: An evaluation and
recommendations. M.S. Thesis, Faculty of Environmental Design.
Calgary, AB: University of Calgary.
Crete, M., & Huot, J. (1993). Regulation of a large herd of
migratory caribou: Summer nutrition affects calf growth and body reserves
of dams. Can. J. Zool., 71, 2291-2296.
Crete, M., R. J. Taylor, & P. A. Jordan, (1981). Simulating
conditions for the regulation of a moose population by wolves. Ecol.
Modelling, 12, 245-252.
Dale, B. W., L. G. Adams, & R. T. Bowyer, (1994). Functional
response of wolves preying on barren-ground caribou in a multiple-prey
ecosystem. J. Animal Ecol., 63, 644-652.
Dawidoff, N. (1992). One for the wolves. Audubon, 94(4), 38-45.
Dawson, P. (1988, January 4). Montana wool growers say that the wolf is
at their door. High Country News, 4.
Defenders of Wildlife. (1984). In favor of the wolf—In Minnesota,
Federal Judge Lord rules state trapping plans illegal. Defenders,
59(2), 10-15.
Dietz, M. S. (1993). Initial investigation of potentially suitable
locations for wolf reintroduction. Environmental Studies Department,
University of Montana, Missoula. An unpublished report funded by the
Predator Project, Bozeman, Mont.
Donnelly, D. M. & L. J. Nelson, (1986). Net economic value of
deer hunting in Idaho. U.S. For. Ser. Resource Bull. RM-13.
Dueck, H. A. (1990). Carnivore conservation and interagency
cooperation: A proposal for the Canadian Rockies. Calgary, Alberta:
M.S. Thesis, University of Calgary.
Duffield, J. (1988). The net economic value of elk hunting in
Montana. Heland, Mont.: Montana Dep. Fish, Wildlife, and Parks.
Dwyer, L. E., Murphy, D. D., & Ehrlich, P. R. (1995). Property
rights case law and the challenge to the Endangered Species Act. Conservation
Biology, 9, 725-741.
Elliot, J. P. (1989). Wolves and ungulates in British Columbia’s
northeast. In Wolf-prey dynamics and management. pp. 97-123.
Wildlife Branch, British Columbia Ministry of Environment, Victoria, B.C.
Wildlife Working Report WR-40.
Fischer, H. (1987). Deep freeze for wolf recovery? Defenders,
62(6), 29-33.
Fischer, H. (1988). Wolves for Yellowstone? Defenders, 63(2),
16-17.
Fischer, H. (1989). Restoring the wolf: Defenders launches a
compensation fund. Defenders, 61(1), 9, 36.
Fischer, H. (1995). Wolf wars. Helena, Mont.: Falcon Press
Publishing
Fritts, S. H., W. J. Paul, L. D. Mech, & D. P. Scott, (1992). Trends
and management of wolf-livestock conflicts in Minnesota. U.S. Fish and
Wildlife Service Resource Pub. 181.
Gasaway, W. (1989). Management of complex predator-prey systems in
Alaska. In Wolf-prey dynamics and management. pp. 124-135. Wildlife
Branch, British Columbia Ministry of Environment, Victoria. Wildlife
Working Report WR-40.
Gasaway, W. C., R. D. Boertje, D. V. Grangaard, D. G. Kellyhouse, R. O.
Stephenson, & D. G. Larsen. (1992). The role of predation in limiting
moose at low densities in Alaska and Yukon and implications for
conservation. Wildl. Monogr., 120, 1-59.
Gasaway, W. C., R. O. Stephenson, & J. L. Davis, (1983). Wolf-prey
relationships in interior Alaska. Alaska Dep. of Fish and Game Wildl.
Tech. Bull., 6.
Glick, D., M. Carr, & B. Harting. (1991). An environmental
profile of the Greater Yellowstone Ecosystem. Bozeman, Mont.: Greater
Yellowstone Coalition.
Goble, D. D. (1992). Of wolves and welfare ranching. The Harvard
Environmental Law Review, 16, 101-127.
Gunson, J. R. (1992). Historical and present management of wolves in
Alberta. Wildl. Soc. Bull., 20, 330-339.
Haber, G. C. (1977). Socio-ecological dynamics of wolves and prey in
a subarctic ecosystem. (Doctoral Dissertation, University of British
Columbia, Vancouver, BC).
Haley, D. (1984). Strife in Peace River country: Can protests silence
British Columbia’s anti-wolf guns? Defenders, 59(3), 33-37.
Hansen, H. L., L. W. Krefting, & V. Kurmis. (1973). The forest
of Isle Royale in relation to fire history and wildlife. Univ. Minn.
Agr. Exp. Sta. Tech. Bull. 294.
Harrison, W. F. (1991). Letter from William F. Harrison, Acting Chief,
Division of Endangered Species, U.S. Fish and Wildlife Service, Twin
Cities Minnesota to Randy T. Simmons, Director, Institute of Political
Economy, Utah State University, Logan, June 27.
Hatter, I. W. & D. W. Janz, (1994). Apparent demographic changes in
black-tailed deer associated with wolf control on northern Vancouver
Island. Can. J. Zool., 72, 878-884.
Hoffos, R. (1987). Wolf management in British Columbia: The public
controversy. British Columbia Ministry of Environment and Parks,
Wildlife Branch. Wildlife Bull. B-52.
Hummel, M. (1989). The IUCN/WWF perspective on wolf conservation. In Wolf-prey
dynamics and management. pp. 136-142. Wildlife Branch, British
Columbia Ministry of Environment, Victoria, BC. Wildlife Working Report
WR-40.
Jonkel, C. (1987). One helluva animal! High Country News,
19(22), 15.
Kay, C. E. (1990). Yellowstone’s northern elk herd: A critical
evaluation of the "natural regulation" paradigm. Ph.D.
Dissertation, Utah State University, Logan, Utah.
Kay, C. E. (1993, August). Wolves in the West: What the government does
not want you to know about wolf recovery. Petersen’s Hunting,
34-37, 106.
Kay, C. E. (1994). Aboriginal overkill: The role of Native Americans in
structuring western ecosystems. Human Nature, 5, 359-398.
Kay, C. E. (1995). Aboriginal overkill and native burning: Implications
for modern ecosystem management. Western J. of Applied Forestry
10:121-126.
Kay, C. E. (In press). An alternative interpretation of the historical
evidence relating to the abundance of wolves in the Yellowstone Ecosystem.
In Carbyn, L. N., S. H. Fritts, and D. R. Seip. Ecology and
conservation of wolves in a changing world. Canadian Circumpolar
Institute, Edmonton, Alberta.
Klein, D. R. (1970). Food selection by North American deer and their
response to overutilization of preferred plant species. In A. Watson
(Ed.), Animal populations in relation to their food resources (pp.
25-46). Oxford, UK: Blackwell Scientific Pub.
Kool, K. L. (1990, September 19). Testimony by director of the Montana
Department of Fish, Wildlife, and Parks before U.S. Senate Committee on
Energy and Natural Resources regarding the Northern Rocky Mountain Gray
Wolf Restoration Act of 1990—S.2674.
Krefting, L. W. (1974). The ecology of Isle Royale moose. Univ.
Minn. Agr. Exp. Sta. Tech. Bull. 297.
Licht, D. S. & S. H. Fritts, (1994). Gray wolf (Canis lupus)
occurrences in the Dakotas. Am. Midl. Nat., 132, 74-81.
Loomis, J. B., Donnelly, D. M., Sorg, C. F. & Oldenburg, L. (1985).
Net economic value of hunting unique species in Idaho: Bighorn sheep,
mountain goat, and antelope. U.S. For. Ser. Resource Bull. RM-10.
Mann, C. C. & Plummer, M. L. (1993). The high cost of biodiversity.
Science, 260, 1868-1871.
MacNaught, D. A. (1987). Wolves in Yellowstone?—park visitors
respond. Wildl. Soc. Bull., 15, 518-521.
McInnes, P. F., Naiman, R. J., Pastor, J. & Cohen, Y. (1992).
Effects of moose browsing on vegetation and litter of the boreal forest,
Isle Royale, Michigan, U.S.A. Ecology, 73, 2059-2075.
McLaren, B. E. & Peterson, R. O. (1994). Wolves, moose, and the
tree rings on Isle Royale. Science, 266, 1555-1558.
Mech, L. D. (1970). The wolf: The ecology and behavior of an endangered
species. Garden City, NY: Natural History Press.
Mech, L. D. & Frenzel, L. D. (1971). An analysis of the age, sex,
and condition of deer killed by wolves in northeastern Minnesota. In Ecological
studies of the timber wolf in northeastern Minnesota. pp. 35-51. U.S.
For. Ser. Res. Paper NC-52.
Merriam, H. R. (1964). The wolves of Coronation Island. Proc. Alaska
Sci. Conf., 15, 27-32.
Messier, F. (1989a). Towards understanding the relationship between
wolf predation and moose density in southwestern Quebec. In Wolf-prey
dynamics and management. Wildlife Branch, British Columbia Ministry
of Environment, Victoria, BC (pp. 13-25). Wildlife Working Report
WR-40.
Messier, F. (1989b). Effect of bison population changes on wolf-prey
dynamics in and around Wood Buffalo National Park. Report prepared on
behalf of Federal Environmental Assessment Review Office, Environment
Canada and Northern Diseased Bison Environmental Assessment Panel. Oct. 5.
Messier, F. (1991). The significance of limiting and regulating factors
on the demography of moose and white-tailed deer. J. Animal Ecol.,
60, 377-393.
Messier, F. (1994). Ungulate population models with predation: A case
study with the North American moose. Ecology, 75, 478-488.
Miller, T. (1988). Wyoming wolves? "Yes!". Wyo. Wildl.,
52(3), 4-7.
Montana Department of Fish, Wildlife, and Parks. (1986). Big bucks and
big bulls: A status report. Montana Outdoors, 17(6), 32-37.
Murie, A. (1934). The moose of Isle Royale. University of Michigan
Museum of Zoology Misc. Pub. 25.
National Park Service. (1975). Environmental assessment: Restoring a
viable wolf population in Yellowstone National Park. Rocky Mountain
Regional Office, Denver, Colo. Draft dated Aug. 7.
National Park Service and Fish and Wildlife Service. (1990a). Wolves
for Yellowstone? A report to the United States Congress. Vol. 1. Executive
summary.
National Park Service and Fish and Wildlife Service. (1990b). Wolves
for Yellowstone? A report to the United States Congress. Vol. 2. Research
and analysis.
National Park Service and Fish and Wildlife Service. (1990c).
Yellowstone wolf questions - a digest. Extracts from, Wolves for
Yellowstone? A report to the United States Congress. Yellowstone National
Park, WY. YELL-560.
Neal, D. (1992, June 13). Wolf workshop sparks protest. Casper
Star-Tribune, Casper, WY. pp. A1, A8.
Pastor, J. & R. J. Naiman. (1992). Selective foraging and ecosystem
processes in boreal forests. Amer. Nat., 139, 690-705.
Pastor, J., R. J. Naiman, & B. Dewey, (1987). A hypothesis of the
effects of moose and beaver foraging on soil carbon and nitrogen cycles,
Isle Royale. Alces, 23, 107-124.
Pastor, J., R. J. Naiman, , B. Dewey, & P. McInnes. (1988). Moose,
microbes, and the boreal forest. Bioscience, 38, 770-776.
Pastor, J., B. Dewey, R. J. Naiman, P. F. McInnes, & Y. Cohen.
(1993). Moose browsing and soil fertility in the boreal forests of Isle
Royale National Park. Ecology, 74, 467-480.
Peek, J. M. & Vales, D. J. (1989). Projecting the effects of wolf
predation on elk and mule deer in the East Front portion of the northwest
Montana wolf recovery area. Dept. of Fish and Wildlife Resources,
University of Idaho, Moscow. Report to the U.S. Fish and Wildlife Service,
Helena, Mont.
Peterson, R. O. (1977). Wolf ecology and prey relationships on Isle
Royale. National Park Service Sci. Monogr., 11.
Peterson, R. O. & R. E. Page, (1988). The rise and fall of Isle
Royale wolves, 1975–1986. J. Mamm., 69, 89-99.
Peterson, R. O., R. E. Page, & K. M. Dodge, (1984). Wolves, moose,
and the allometry of population cycles. Science, 224, 1350-1352.
Pletscher, D. H., R. R. Ream, R. Demarchi, W. G. Brewster, & E. E.
Bangs, (1991). Managing wolf and ungulate populations in an international
ecosystem. Trans. N.A. Wildl. and Nat. Res. Conf., 56, 539-549.
Rachael, J. (1995). Idaho wolf recovery and management plan:
Planning period 1995-2005. Idaho Department of Fish and Game, Boise,
Id. January draft.
Randall, D. (1980). Wolves for Yellowstone: Experts say
"yes," though cautiously, to re-introduction. Defenders,
55(3), 188-190.
Randall, D. (1981). Yellowstone wolves: Re-introduction has scientists’
support; remaining hurdles are legal, logistical. Defenders, 56(1),
30-31.
Ream, R. (1995). Montana wolf recovery and management plan: Montana
Fish, Wildlife, and Parks--1995. Montana Department of Fish, Wildlife,
and Parks, Helena, Mont. October review draft.
Ream, R. R., M. W. Fairchild, D. K. Boyd, & D. H. Pletscher.
(1991). Population dynamics and home range changes in a colonizing wolf
populations. In K. B. Keiter, & M. S. Boyce (Eds.), The Greater
Yellowstone Ecosystem: Redefining America’s wilderness heritage (pp.
349-366). New Haven, CT: Yale University Press.
Risenhoover, K. L. & S. A. Maass. (1987). The influence of moose on
the composition and structure of Isle Royale forests. Can. J. For. Res.,
17, 357-364.
Schneider, B. (1981). The return of the wolf. National Parks
Magazine, 55(7-8), 7-13.
Seip, D. R. (Ed.). (1989a). Proceedings wolf-prey dynamics and
management. Wildlife Working Report WR-40. Victoria, BC: Wildlife
Branch, British Columbia Ministry of Environment.
Seip, D. R. (1989b). Caribou-moose-wolf interactions in central British
Columbia. In Wolf-prey dynamics and management (pp. 57-69).
Wildlife Branch, British Columbia Ministry of Environment, Victoria, B.C.
Wildlife Working Report WR-40.
Seip, D. R. (1991). Predation and caribou populations. Rangifer
(Special Issue), 7, 46-52.
Seip, D. R. (1992a). Factors limiting woodland caribou populations and
their interrelationships with wolves and moose in southeastern British
Columbia. Can. J. Zool., 70, 1494-1503.
Seip, D. R. (1992b). Wolf control and the management of ungulate
populations. In D. M. McDullough & R. Barrett (Eds.), Wildlife
2001: Populations (pp. 331-340). New York: Elsevier Applied Science
Shaffer, M. L. (1992). Keeping the grizzly bear in the American West: A
strategy for real recovery. Washington, DC: The Wilderness Society.
Skeele, T. (1991). Why subsidize the recovery of the wolf? High
Country News, 23(6), 16.
Sorg, C. F. & Nelson, L. J. (1986). New economic value of elk
hunting in Idaho. U.S. For. Ser. Resource Bull. RM-12.
Soule, M. E. (Ed.). (1987). Viable populations for conservation.
New York: Cambridge University Press, NY.
Theberge, J. B. (1991). Ecological classifications, status, and
management of the Gray Wolf, Canis lupus, in Canada. Canadian
Field-Naturalist, 105, 459-463.
Thomas, C.D. (1990). What do real population dynamics tell us about
minimum viable population sizes? Conservation Biology, 4, 324-327.
Thompson, J. (1991, December 5). That’s not a vicious monster; that’s
a wolf. Casper Star-Tribune, Casper, WY, p. A8.
Thompson, J. G. (1993). Addressing the human dimensions of wolf
reintroduction: Anexample using estimates of livestock depredation and
costs of compensation. Society and Natural Resources, 6, 165-179.
Turner, J. F. (1991, January 5). Wolves and Wyoming high country. Casper
Star-Tribune, Casper, WY.
U.S. Fish and Wildlife Service. (1978). Recovery plan for the eastern
timber wolf. U.S. Fish and Wildlife Service, North Central Regional
Office, Twin Cities, MN. U.S. Government Printing Office:1978-768-723.
U.S. Fish and Wildlife Service. (1987). Northern Rocky Mountain wolf
recovery plan. Denver, Colo: U.S. Fish and Wildlife Service.
U.S. Fish and Wildlife Service. (1991). Annual report of the Montana
Interagency Wolf Working Group. U.S. Fish and Wildlife Service, Helena,
Mont. U.S. Government Printing Office: 1991—574-956/74956.
U.S. Fish and Wildlife Service. (1994). The reintroduction of gray
wolves to Yellowstone National Park and Central Idaho, Final Environmental
Impact Statement. Helena, Mont.: U.S. Fish and Wildlife Service.
Van Ballenberghe, V. (1992). Conservation and management of gray wolves
in the USA: Status, trends, and future directions. In D. M. McCullough,
& R. Barrett (Eds.), Wildlife 2001: Populations (pp.
1141-1149). New York: Elsevier Applied Science.
Walters, C. J., M. Stocker, & G. C. Haber (1981). Simulation and
optimization models for a wolf-ungulate system. In C. W. Fowler & T.
D. Smith (Eds.), Dynamics of large mammal populations (pp.
317-337). New York: John Wiley and Sons.
Warrick, D. M. (1992). Wildlife scientist interview: Dr. Gordon Haber. Wolves
and Related Canids, 5(1), 16-21.
Wayne, R. K., N. Lehman, D. Girman, P. J. P. Gogan, D. A. Gilbert, K.
Hansen, R. O. Peterson, U. S. Seal, A. Eisenhawer, L. D. Mech, & R. J.
Krumenaker (1991). Conservation genetics of the endangered Isle Royale
gray wolf. Conserv. Biol., 5, 41-51.
Weaver, J. (1978). The wolves of Yellowstone. U.S. National Park
Service Natural Resources Rep. 14.
Wilderness Society. (1987). Management directions for the national
forests of the Greater Yellowstone Ecosystem. Washington, DC: The
Wilderness Society.
Wildlife Division. (1985). Antlered elk and deer management in
Montana: Past trends and current status. Montana Dept. Fish, Wildlife,
and Parks, Helena, Mont. Special report for the Fish and Game Commission.
Williams, T. (1990). Waiting for wolves to howl in Yellowstone. Audubon,
92(6), 32-41.
Williams, T. (1993). Alaska’s war on wolves. Audubon, 95(3),
44-50.
Wilson, E. O. (1992). The Diversity of Life. W.W. Norton &
Co. Ltd.
Wise, J. J. (1987, December 11). Wolves. Logan Herald Journal,
Logan, Utah, pp. 11-12.
Woodruff, D. S. (1989). The problems of conserving genes and species.
In D. Western & M. Pearl (Eds.), Conservation for the twenty-first
century (pp. 76-88). New York: Oxford University Press.
Woodsum, K. (1984). Crisis in wolf country--Minnesota wants to revive
sport trapping of wolves, posing a threat to the last major wolf
population south of Canada. Defenders, 59(1), 20-27.
Wright, R. G. (1992). Wildlife research and management in the
national parks. Urbana, Ill: University of Illinois Press.
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