HOME >> BIOLOGY >> NEWS
Wolf reintroduction reshapes Yellowstone ecology

The 1995 reintroduction of wolves in the northern range of Yellowstone National Park has led to increased growth of willow and cottonwood in the park by causing fear responses in elk and other ungulates, according to William J. Ripple and Robert L. Beschta of Oregon State University in Corvallis. Ripple and Beschta, writing in the August 2004 issue of BioScience, argue that fear of predation when wolves are present changes grazing patterns, prompting grazers to avoid sites that deny them easy escape and to browse less thoroughly. The "terrain fear factor" consequently allows woody plants and trees to grow taller and thicker when wolves are present. This in turn has allowed beaver colonies to expand.

Ripple and Beschta base their conclusions on theory about feeding relationships between species, browsers' risk of predation since the reintroduction of wolves into the park in 1995, and empirical research. In the view of Ripple and Beschta, extirpation of wolves in the early 20th century was "most likely the overriding cause of the precipitous decline and cessation in the recruitment of aspen, cottonwood and willow across the nothern range."

The new theory thus brings a significant new factor into long-running, intense debates over the proper management of Yellowstone. Ripple and Beschta conclude that, for Yellowstone, "restoration goals should focus on the recovery of natural processes." The identified fear factor might also be important in other regions, although the evidence is less well developed. Journalists may obtain copies of the article by contacting Donna Royston, AIBS communications representative.


'"/>

Contact: Donna Royston
droyston@aibs.org
202-628-1500 x261
American Institute of Biological Sciences
2-Aug-2004


Page: 1

Related biology news :

1. 19th century museum specimens help plan reintroduction of endangered tiger beetle
2. Yellowstones long-distance travelers in trouble, study says
3. Wolves are rebalancing Yellowstone ecosystem
4. Yellowstone wolves, grizzlies and moose dysfunctional study says
5. Lake tributaries in Yellowstone National Park allow unique study of whirling disease
6. Without bears and wolves to hunt them, Yellowstone moose have lost some spring in their step, study says
7. Scientist searches Yellowstone Park for carbon dioxide-eating microbe
8. New study shows bison dont favor groomed roads in Yellowstone National Park
9. Microbial transport at Yellowstone: by land, sea or air?
10. Wolves in Yellowstone may aid aspen recovery
11. USGS scientist receives award for brucellosis research in Greater Yellowstone Area

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Wolf reintroduction reshapes Yellowstone ecology

(Date:7/21/2015)... GOTHENBURG, Sweden , July 21, 2015 ... sensor FPC1025. Already received as well as expected revenues in 2015 ... included in FPC,s communicated revenue guidance of approximately 2,200 MSEK for ... is a leading smartphone manufacturer in China ... selected FPC1 02 5 for Axon ...
(Date:7/20/2015)... , July 20, 2015  Acuity Market ... Report: The Convergence of Commerce and Privacy" forecasts ... mobile biometric apps will be downloaded to smart ... The mobile biometrics market is projected to generate ... revenue during the seven-year forecast period.    ...
(Date:7/9/2015)... July 9, 2015  Synaptics Inc. (NASDAQ: SYNA ), ... that it will report financial results for the fourth ... 2015 after the close of market. The company will ... at 2:00 p.m. PT (5:00 p.m. ET), during which ... participate on the live call, analysts and investors should ...
Breaking Biology News(10 mins):FPC's Touch Fingerprint Sensor FPC1025 in ZTE's Smartphone Axon 2Biometrics on Smart Mobile Devices to Redefine Digital Identity with 12.9 Billion Biometric App Downloads between 2014 and 2020 2Synaptics to Report Fourth Quarter, Fiscal Year 2015 Results on July 30 2
(Date:7/30/2015)... York, NY (PRWEB) , ... July 30, 2015 , ... As part of its 2015 ... raw material and technical service business units, Whitehouse Laboratories is pleased to ... will be adjacent to the Container Center of Excellence and will be strictly dedicated to ...
(Date:7/29/2015)... According to a new market research report, ,Global ... published by Mordor Intelligence, the Global market is expected to ... with North America being the largest ... market size. The Global market for Stem Cells is expected ... of (2015-2020).      (Logo: http://photos.prnewswire.com/prnh/20150428/740799) , ...
(Date:7/29/2015)... 2015  HealthSouth Corporation (NYSE: HLS ... post-acute healthcare services, offering both facility-based and home-based ... for the second quarter ended June 30, 2015. ... strong volume growth in both segments and an ... Grinney, President and Chief Executive Officer of HealthSouth. ...
(Date:7/29/2015)... ... July 29, 2015 , ... Brady (NYSE:BRC), a global ... Guide . To align chemical container labeling with OSHA’s updated Hazard Communication (HazCom) ... components, an example of an accurate label, and pictogram uses and meanings. , ...
Breaking Biology Technology:Whitehouse Labs Formally Announces Plans to Open a Microbiological Laboratory 2Asia Pacific to Dominate the Global Stem Cell Market - Vericel Corporation, Ocata Therpeutics, Athersys Inc., Cryo-Cell International, Geron Corporation, StemCells, Inc. Among the Major Players 2Asia Pacific to Dominate the Global Stem Cell Market - Vericel Corporation, Ocata Therpeutics, Athersys Inc., Cryo-Cell International, Geron Corporation, StemCells, Inc. Among the Major Players 3HealthSouth Reports Results for Second Quarter 2015 2HealthSouth Reports Results for Second Quarter 2015 3HealthSouth Reports Results for Second Quarter 2015 4HealthSouth Reports Results for Second Quarter 2015 5HealthSouth Reports Results for Second Quarter 2015 6HealthSouth Reports Results for Second Quarter 2015 7HealthSouth Reports Results for Second Quarter 2015 8HealthSouth Reports Results for Second Quarter 2015 9HealthSouth Reports Results for Second Quarter 2015 10HealthSouth Reports Results for Second Quarter 2015 11HealthSouth Reports Results for Second Quarter 2015 12HealthSouth Reports Results for Second Quarter 2015 13HealthSouth Reports Results for Second Quarter 2015 14HealthSouth Reports Results for Second Quarter 2015 15HealthSouth Reports Results for Second Quarter 2015 16HealthSouth Reports Results for Second Quarter 2015 17HealthSouth Reports Results for Second Quarter 2015 18HealthSouth Reports Results for Second Quarter 2015 19HealthSouth Reports Results for Second Quarter 2015 20HealthSouth Reports Results for Second Quarter 2015 21HealthSouth Reports Results for Second Quarter 2015 22HealthSouth Reports Results for Second Quarter 2015 23HealthSouth Reports Results for Second Quarter 2015 24HealthSouth Reports Results for Second Quarter 2015 25HealthSouth Reports Results for Second Quarter 2015 26HealthSouth Reports Results for Second Quarter 2015 27HealthSouth Reports Results for Second Quarter 2015 28HealthSouth Reports Results for Second Quarter 2015 29HealthSouth Reports Results for Second Quarter 2015 30HealthSouth Reports Results for Second Quarter 2015 31HealthSouth Reports Results for Second Quarter 2015 32HealthSouth Reports Results for Second Quarter 2015 33
Cached News: