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Sunday, May 17, 2020 | History

2 edition of Wolves, elk, and aspen found in the catalog.

Wolves, elk, and aspen

Melanie Plett

Wolves, elk, and aspen

trophic cascades in Banff National Park

by Melanie Plett

  • 215 Want to read
  • 3 Currently reading

Published in 2004 .
Written in English


Edition Notes

Statementby Melanie Plett.
The Physical Object
Pagination51 leaves :
Number of Pages51
ID Numbers
Open LibraryOL20126360M

No wolves, too many elk, the aspen trees decline. The prediction of the study followed the logic that the re-introduction of wolves would sooner or later make a substantial reduction in the elk herd.   Wolves are culling the elk herd, adding to the effects of bears, cougars, and hunters outside the park, which means less elk are browsing on aspen and other woody species.

In Yellowstone, elk are wolves’ main food source, especially in the winter. As a result of the wolves’ reintroduction in and , the park’s northern range herd has plummeted from a.   A Natural Classroom, Run by Wolves. Research suggested that with the return of wolves, wary elk began avoiding places where they didn’t feel safe. Willow, aspen and cottonwood trees.

Wolves are a wildcard, based on Yellowstone — an area that is 90% evergreen forest, that never had more than 6% aspen, and no hunting for a years resulting in unsupportable elk populations. Colorado is nothing like Yellowstone, and Colorado is not remotely similar to what it was years ago.   No Wolves, More Elk, Fewer Aspens. Science News in ASL: Smith Branch at MSD Nature Center - Surface Runoff - The Water Cycle - Duration: Michael Stultz views.


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Wolves, elk, and aspen by Melanie Plett Download PDF EPUB FB2

Wolves were largely eliminated from the park in the mids, and aspen recruitment during that time ceased at both sites, apparently because of heavy browsing by elk. With recovery of wolf populations in the late s and increasing predation risk, elk use of the Willow Creek site declined, and aspen recruitment by: Wolves, elk, and aspen in the winter range of Jasper National Park, Canada R.L.

Beschta and W.J. Ripple Abstract: We undertook a retrospective study of aspen age structure in the winter range of Jasper National Park to assess potential trophic cascades in wolf–elk–aspen systems. Wolves may have an indirect effect on aspen regeneration by altering elk movements, browsing patterns, and foraging behavior (predation risk effects).

Elk pellet groups, aspen sucker heights, and the percentage of browsed suckers were the variables used to measure differences in aspen stands in high and low wolf-use areas of the northern by: We would like to show you a description here but the site won’t allow more.

From toonly Mexican wolves per elk were present on the Apache National Forest compared to western gray wolves (Canis lupus occidentalis) per elk in Yellowstone National Park where tri-trophic cascades involving Wolves, elk, elk aspen have been by: Wolves are culling the elk herd, adding to the effects of bears, cougars, and hunters outside the park, which means less elk are browsing on aspen and other woody : Kevin Reichard.

Quaking aspen (Populus tremuloides) biomass has declined in Yellowstone National Park (YNP) in the past century.

We installed permanent belt transects (plots) for long-term monitoring of aspen stands both within and outside of established wolf pack territories on YNP’s and aspen book range to determine if reintroduced wolves are influencing elk browsing patterns and aspen regeneration through a trophic Cited by: Aspen can be tied to ecosystem condition through a 4-level trophic model that links humans, wolves (Canis lupus), elk (Cervus elaphus), and aspen through the processes of predation, herbivory.

According to a study set to be published this week in Ecology, a journal of the Ecological Society of America, the fear of wolf predation may not be discouraging elk from eating aspen trees after all. Previous thinking went like this: Aspen are not regenerating well in Yellowstone National Park.

Elk eat young aspen. But wolves eat elk. Wolves feed on a variety of large prey, including elk. Elk feed on shrubs and trees like aspen and cottonwood trees. Inthe last wolf pack in Yellowstone National Park was removed to protect the people in the surrounding areas. Wolves may have an indirect effect on aspen regeneration by altering elk movements, browsing patterns, and foraging behavior (predation risk effects).

Elk pellet groups, aspen sucker heights, and the percentage of browsed suckers were the variables used to measure differences in aspen stands in high and low wolf-use areas of the northern range. Mexican wolves, elk, and aspen in Arizona: Is there a trophic cascade.

Article in Forest Ecology and Management (5) July with 92 Reads How we measure 'reads'. Previous research has claimed that the reintroduction of wolves to Yellowstone National Park in is helping restore quaking aspen in risky areas where wolves prowl.

But apparently elk hungry. In a wolf?elk aspen food web, for trophic cascades to occur, wolves must have a strong effect on elk, and elk must have a strong effect on aspen. If both effects do not occur simultaneously, then the result could be a trophic trickle or a system dominated by bot-tom-up effects.

Aspen conservation status and associated factors Yellowstone’s Trophic Cascade: Of Wolves, Elk and Quaking Aspen, Part One By Howie Wolke | Published: J By the time the U.S.

stock market crashed inthe native gray wolf (northern Rocky Mountain subspecies, Canis lupus irremotus) had been essentially exterminated throughout the Greater Yellowstone Ecosystem (GYE).

Wolves eat elk, of course, at an average of one elk per wolf per month in winter, according to park statistics. But the return of aspens to the.

A trophic cascade recently has been reported among wolves, elk, and aspen on the northern winter range of Yellowstone National Park, Wyoming, USA, but the mech- anisms of indirect interactions within this food chain have yet to be established.

We in- vestigated whether the observed trophic cascade might have a behavioral basis by exploring environmental factors influencing the movements of 13 Cited by: «Yellowstone’s Trophic Cascade: Of Wolves, Elk and Quaking Aspen, Part One Collecting Firewood on Guided Yellowstone Backpacking Trips» “Everyone needs beauty as well as bread, places to play in and pray in, where nature may heal and give strength to body and soul.”–.

Wolves in Yellowstone Park. Trophic Cascades among Wolves, Elk, and Aspen on Yellowstone National Park's Northern Range. Biological Conservation, A great book, “Wolves on the Hunt” (), rebuts many common assertions about the ability of wolves to kill anything they want to, anywhere they choose.

Elk, moose, deer, bighorn sheep and pronghorn are doing fine in Yellowstone. Norman Bishop. Bozeman, Montana. Wolves were reintroduced to Yellowstone in and Previous research has claimed that the reintroduction of wolves to Yellowstone National Park in is helping restore quaking aspen in risky areas where wolves prowl.

But apparently elk hungry for winter food had a. Wolves vs. Elk Findings. Wolves are altering the abundance, distribution, group sizes, movements and vigilance of are some indications that these interactions may be causing new growth in willows as elk are kept on the move by wolves and don't stay to browse in any one area very long.; Elk are the primary prey for wolves, comprising 92 percent of kills during the winter.From aspen data, I concluded that while a host of interacting biophysical factors may influence aspen recruitment and growth, the observed pattern of aspen decline is most correlated with elk herbivory, coincident with the presence and absence of wolves.

Outside of the elk winter range, but still within the northwestern portion of the park, I Cited by: 2.