Chapter 4
The Rise and Decline of Ecological
Attitudes, 19291940 (continued)
Rangelands and the Grazing
Species
In contrast to the research reserve program, which was intended to
leave selected natural areas undisturbed, the biologists believed that
in other instances it was necessary to interfere with nature and, as
stated in Fauna No. 1, assist certain species to combat the "harmful
effects of human influence" in order to restore the "primitive state" of
the parks. Fauna No. 1 also specifically called for preservation of
ungulate range and advocated that a park's "deteriorated range" should
be "brought back to [its] original productiveness." [64] Of all the Park Service's attempts to
interfere with nature during the 1930s, the manipulation of
Yellowstone's northern elk herd received the greatest attention and
ultimately became the most controversial.
To many familiar with Yellowstone, the park's northern elk herd
seemed to have become so large that it was overgrazing its range (mostly
consisting of the Lamar and Yellowstone river basins). The resulting
deterioration appeared to limit use of the range by competing ungulates
such as deer and pronghorn. The wildlife biologists determined that the
northern herd needed to be reduced, in line with Fauna No. 1's
recommendations, a proposal that would entail shooting large numbers of
elk. For humane reasons, shooting the animals seemed far preferable to
allowing them to die of winter kill when heavy snows restricted their
range. Furthermore, reduction could bring the population to a specified
level.
The biologists concluded that "human influence" had caused the winter
range problems in Yellowstone. This understanding in the 1930s (which
decades later would become strongly disputed) was based on some
fundamental assumptions: prior to Anglo-American settlement of the lower
valleys to the north of the park, the herd had wintered in those
valleys; and after the park was established, its protected elk
population had expanded enormously. The scientists also believed that
the elk population had crashed in the period 191720, and that this
dramatic decline had been caused by range deterioration through
overgrazing. With drought conditions affecting the range in the late
1920s and early 1930s, and with elk populations believed to have
increased due to protection in the park, a second population crash was
seen as imminentone that the Wildlife Division expected to bring
"hideous starvation and wastage." [65]
In 1931 Joseph Dixon and Ben Thompson (who were working with George
Wright on Fauna No. 1) had participated in a reconnaissance of the deer
population explosion in the Kaibab National Forest, north of Grand
Canyon. Reporting that an overpopulation of deer threatened the national
forest, they recommended reducing the deer herds. Probably influenced by
what seemed to have happened in the Kaibab, the biologists made their
recommendation that Yellowstone's elk population also be reduced. In a
February 1934 report documented with numerous photographs (and reprinted
in Fauna No. 2 the following year) the Wildlife Division announced that,
as a result of an overpopulation of elk, Yellowstone's northern range
had been overused to the point that it was in "deplorable" condition.
The biologists believed that the situation had worsened since they first
saw the area in 1929, and that it now threatened the survival of other
animals dependent on the range. Arguing that the overpopulated herd was
on the "brink of disaster," the report warned that the next hard winter
would cause starvation and death for thousands of elk. [66]
The elk reduction program had strong, apparently unanimous support
among the Park Service's wildlife biologists. Their statements and
reports did not equivocate on the wisdom of artificially lowering
Yellowstone's elk population. Commenting in the late winter of 1935 that
without reduction the problems of overgrazing and winter starvation
would continuethe "old winter range ghost will be walking
again"Wright himself saw the program as critical to the success of
the park's wildlife and range management. [67] Olaus Murie, who had overseen the Bureau of
Biological Survey's elk management in Jackson Hole, south of
Yellowstone, also urged reducing the northern herd, as did his brother,
Adolph, a highly respected National Park Service wildlife biologist. In
late December 1934, just before the first big reduction began, Olaus
Murie wrote to Ben Thompson approving elk reduction, noting that "if
carefully handled it will be successful," and adding that he looked
forward "with great interest to the outcome of the experiment." [68]
Beyond their own observations, the biologists based their elk policy
on research conducted in the region in the 1920s and early 1930s by U.S.
Forest Service biologist W. M. Rush, whose work was privately funded
with money obtained by Park Service director Horace Albright. Rush's
conclusions supported the biologists' views. [69] Also, because they believed that longer
hunting seasons and increased bag limits in Montana and on adjacent
Forest Service lands would provide only limited help, the biologists
recommended that the park itself undertake reduction to ensure that the
proper number of elk would be killed each winter. Until the desired
population level was reached, Yellowstone must be prepared "to slaughter
elk as it does buffalo." [70]
Much more cautious was the opinion of Joseph Grinnell, mentor to
numerous Park Service biologists. Asked by Director Cammerer to comment
on the proposed reduction, Grinnell observed that the elk situation in
Yellowstone was "truly disturbing from any point of view." He remarked
on the "damage" that he believed elk grazing had done to the winter
range, and agreed that human influences had been an important factor in
bringing on the situation. Although he carefully avoided criticizing the
decisions of his former students and close friends, Grinnell withheld
support for the reduction program. Rather, he expressed hope that the
killing of any park animals, predators as well as elk, would become a
thing of the past. In his summation Grinnell advocated "adjustments
through natural processes" to restore the "primeval biotic set-up." More
than the Park Service biologists of the 1930s, Grinnell expressed faith
in allowing "natural processes" to control elk populations, with
aggressive measures taken to reduce adverse human influences on the
animals. [71]
Reduction began in January 1935, with Yellowstone's rangers shooting
the elk and preparing their carcasses for shipment to tribes on nearby
reservations. With the intention of reducing elk populations to the
range's "carrying capacity," the Park Service's goal of killing 3,000
elk the first winter included animals to be taken outside the park under
Forest Service and Montana State Fish and Game Department regulations
liberalized to increase the number killed by hunters. During the first
reduction effort, hunters on lands adjacent to Yellowstone took 2,598
elk and park rangers killed 667, for a total of nearly 3,300. [72]
Responding to an inquiry from the American Museum of Natural History
in March 1935, George Wright expressed relief that the Park Service
itself had not had to kill large numbers of elk during the initial
reduction; yet he wrote that "we are glad to have established a
satisfactory precedent" regarding the "propriety of direct control" in
the national parks. Even after further reduction in 1936, biologist
Adolph Murie studied Yellowstone's range and found it "undoubtedly
worse" than it had been in six or seven years. He recommended that the
kill be increased to 4,000 the following winter. A lengthy 1938 report
by Yellowstone ranger Rudolph L. Grimm again confirmed the belief that
the range was overgrazed, and advocated continued reduction. [73]
With a "satisfactory precedent" established in the mid-1930s,
Yellowstone's elk reduction program began its long history, with the
policy eventually being applied in other areas, particularly Rocky
Mountain National Park. At the end of the decade, the wildlife
biologists reported that the "basic and most important problem" at
Yellowstone was still the condition of the park's range. "As in the
past," they asserted, the abundance of elk "depletes the forage of other
ungulates using the same range." [74]
Although he did not speak out aggressively against the reduction
program, Grinnell continued to oppose it, writing to Director Cammerer
in January 1939 that he did not approve of regulating "the numbers of
certain animals in certain Parks." Grinnell urged that the Service
submit the problem to a group of specially trained ecologists. [75]
[] Throughout the 1930s, management of
Yellowstone's Lamar Valley bisonthe herd of most concern to the
Park Serviceremained more intensive and varied than management of
the park's elk. Using domestic livestock ranching methods first
developed by the U.S. Army and then expanded during Mather's time, bison
management changed little during the decade. Still headquartered at
Buffalo Ranch, it continued to involve roundups, winter feeding in the
corrals, and removal of surplus animals (including those not wanted for
breeding), which were slaughtered or shipped live to other areas.
In Fauna No. 1, the biologists had had little to recommend concerning
bison management, stating only that winter feeding of the animals was
"absolutely necessary." Regarding park fauna in general, the report's
recommendations called for allowing threatened species to exist on a
"selfsustaining basis" when such measures as feeding were no longer
necessary. Similar counsel was given in Fauna No. 2, which urged
returning bison to their "wild state" to the degree that the "inherent
limitations" of each park would permit. But such measures as winter
feeding and slaughtering would have to continue until "artificial
management" was no longer necessary. [76]
Based on recommendations made during the late 1920s and early 1930s,
the park sought to keep Yellowstone's Lamar Valley herd limited in size,
at first seeking a population level of 1,000 animals, then 800 beginning
about 1934levels believed to be within the "carrying capacity" of
the bison range and what the Buffalo Ranch facilities could accommodate.
Even by the following year, some concern was being expressed that the
population was much too high. Harlow B. Mills, a biologist at Montana
State College who had worked in Yellowstone, wrote an extensive report
on wildlife conditions in the park in 1935, recommending that the Lamar
Valley herd be reduced to "100 or less animals." Mills believed there
were too many bison in Yellowstone, and that the current population was
probably greater than under primitive conditions. The ranching
operations seemed to be a loss of "energy, time, and money." Although
Yellowstone had helped save America's bison from extinction in the
United States, Mills added that the bison "has been saved and there is
now no necessity of fearing that the species will disappear." In spite
of Mills' much lower recommendations, the Service maintained the
population level at close to 800 through the remainder of the 1930s. [77]
Fauna No. 2 also provided statistics on bison losses in recent
decades. Since the army began its bison management in 1902, 682 animals
had been slaughtered, 279 had been shipped live, and 48 "outlaws and
cripples" had been destroyed. In addition, 124 bison had died from
disease. [78] In 1935, the year Fauna No. 2
was published, George Wright expressed his displeasure with live
shipping, whether of bison or elk, and whether to other national parks
or to state or local parks. He believed that such activity involved the
"inadvised mixing of related forms and the liberation of certain species
in areas unsuited to their requirements," which brought "great and
irreparable damage in many instances." [79]
Regardless of such disapproval, live shipping remained a regular
activity in the parks, as did slaughtering and occasional destruction of
"outlaws." Yellowstone superintendent Edmund Rogers reported in late
1937 that 59 bison, including "some old animals that we wish to take
from the herd," were being held for live shipment. The park planned
shipments to the Springfield, Massachusetts, zoo; to an individual in
Wolf Creek, Montana; and to Prince Ri Gin, in Korea. In addition, plans
were made to send bison carcasses to the Wind River Agency in Wyoming
for distribution to local Indians. In Wind Cave National Park, where
until the mid-1930s the Bureau of Biological Survey had been in charge
of wildlife management, efforts were begun to reduce bison and elk to
satisfactory numbers. The Service reported the following year that both
Wind Cave and Platt national parks were reducing their bison populations
and shipping carcasses to nearby Indian tribes.
These live shipments and distributions of carcasses may not have won
much political advantage, but the distribution of buffalo robes was at
times intended to reap political gain. Recognizing this potential,
Director Cammerer wrote to Secretary Ickes in 1936 that disposition of
the hides "to friends of the Service and the Department, upon their
special request, has been and will be helpful in maintaining a special
interest in matters relating to this Department and the Service."
Yellowstone superintendent Rogers noted that requests for hides had been
received from a number of highly placed individuals, such as Senator
Robert F. Wagner of New York and Clyde A. Tolson of the Federal Bureau
of Investigation. [80]
Platt and Wind Cave shared another management practice with
Yellowstone, as all of these parks set up fenced-in areas for wildlife
(particularly bison) to be viewed by the public. Only a few hundred
acres in size, Platt had no choice but to build a display area for
viewing bison that had originally been shipped in from a nearby wildlife
preserve. The Park Service took over wildlife management in Wind Cave
with fences already in place, and despite declared intentions to remove
the fences, continued to maintain an animal enclosure for public
viewing. [81] As for Yellowstone's bison,
Director Albright had stated in 1929 his determination to make the
animals "more accessible to the visiting public." The problem as he saw
it was how to manage the bison population "under nearly natural
conditions and at the same time get it near the main highways where it
can be easily and safely observed." [82]
Predictably, the biologists opposed confining park wildlife. In 1931
George Wright made his opposition clear to Albright, pointedly reminding
the director that the purpose of park wildlife "does not end with their
being seen by every tourist," and chiding that people see many such
animals "when the circus comes to town." To Wright and his fellow
biologists, an animal enclosure had the appearance of a "game farm" and
was an inappropriate display of park wildlife to the public. [83]
Wright's position was reflected in Joseph Grinnell's remarks to
Director Cammerer in 1933, after Yosemite's fenced-in Tule elk herd (not
native to the park) had been returned to its native habitat in
California's Owens Valley. Keeping a close watch on Yosemite's wildlife
management, Grinnell wrote to Cammerer applauding Superintendent Charles
Thomson's decision to remove the elk from the park. In reference to
overall national park policy, Grinnell remarked that parks were not
places "in which to maintain any sorts of animals in captivity," adding
that it was the "free-living native wild animal life that . . . gives
such rich opportunity for seeing and studying." He took it for granted
that maintenance of free-roaming wild animals was the Service's "general
policy." [84]
Grinnell was mistaken, however. Yellowstone's most ambitious effort
to display bison came in 1935, only two years after Grinnell's letter to
Cammerer, when the park established "Antelope Creek Buffalo
Pasture"an approximately 530-acre tract south of Tower Falls in
the northeast section of the park. Located along the park's main tourist
road, the pasture accommodated about thirty bison and included a
five-acre "show corral" to assure visitors a view of the animals. [] An important part of the park's wildlife
display for several years, the Antelope Creek enclosure would be
discontinued in the 1940s by Director Newton B. Drury, sparking a heated
controversy over the very policy issues that Grinnell and the wildlife
biologists had raised.
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