HOME >> BIOLOGY >> NEWS
Gray wolves maintain the food chain in winter

Climate change has already had dramatic effects on individual species, with disruptions in range, reproductive success, and seasonal phenomena like migration. But, in a new study from the open-access online journal PLoS Biology (www.plosbiology.org), Christopher Wilmers and Wayne Getz show that the impact of climate change on many different species in Yellowstone Park can be buffered by a top predator - the reintroduced gray wolf (Canis lupus).

Gray wolves inhabited most of North America until US extirpation campaigns nearly eradicated them by the 1930s. In 1995, the US Fish and Wildlife Service reintroduced the persecuted predator into Yellowstone. Wilmers and Getz used data from the past 50 years to establish winter trends and model wolves' impact on the fate of resident scavengers faced with a changing climate. Their models show that wolf kills temper the potentially devastating effects of climate-related carrion shortages on scavengers. Unlike mountain lions and grizzly bears, wolves abandon their prey (usually elk or moose) once sated, leaving much-coveted leftovers for ravens, eagles, coyotes, bears, and other scavengers. Altogether, their modeling studies show that shorter winters without wolves will create intermittent food supplies that no longer track the needs of local scavengers. With or without wolves, late-winter carrion abundance will decline with shorter winters. But wolf kills buffer these shortages, providing meals that could determine whether scavengers will be able to survive and reproduce.

It seems clear that wolves have the potential to provide a safety net for scavengers, extending the time they need to adapt to a changing environment. Thanks to a rebounding wolf population, field researchers can measure the magnitude of this predicted buffer effect. The models described here can guide their efforts and help species adjust to major environmental shifts like climate chang
'"/>

Contact: Paul Ocampo
pocampo@plos.org
415-624-1224
Public Library of Science
14-Mar-2005


Page: 1 2

Related biology news :

1. Presence of wolves allows aspen recovery in Yellowstone
2. Specialized, bone-crushing wolves of Alaska disappeared long ago
3. Ice Age extinction claimed highly carnivorous Alaskan wolves
4. Researchers determine why wolves not dispersing as fast as expected in Yellowstone
5. Contagious cancer in dogs confirmed; origins traced to wolves centuries ago
6. Killing wolves may not protect livestock efficiently
7. The lost genetic legacy of American gray wolves
8. Long-term ulcerative colitis study shows Remicade responders maintained improvement
9. Unpeaceful co-existence: How strengths and weaknesses maintain biodiversity in an ant community
10. Big vegetarian mammals can play a critical role in maintaining healthy ecosystems, study finds
11. Stealth technology maintains fitness after sex

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/27/2016)... Ohio , Jan. 27, 2016  Rite Track, ... based in West Chester, Ohio ... award winning service staff, based in Austin, ... capacity and ability to provide modifications, installations and technical ... Dovalina , CEO of PLUS, commented, "PLUS has provided ...
(Date:1/22/2016)... DUBLIN , January 22, 2016 ... has announced the addition of the  ... to their offering. --> ... of the  "Global Behavioral Biometric Market ... --> Research and Markets ( http://www.researchandmarkets.com/research/4lmf2s/global_behavioral ...
(Date:1/20/2016)... , Jan. 20, 2016 A market that ... directly benefit from the explosion in genomics knowledge. Learn ... Sound Research. A range of dynamic trends are pushing ... - personalized medicine - pharmacogenomics - pathogen evolution - ... large markets - greater understanding of the role of ...
Breaking Biology News(10 mins):
(Date:2/10/2016)... , February 10, 2016 Early-career researchers ... Peru , Uganda and ... work in health and nutrition   Indonesia , ... Uganda and Yemen are being honored ... epidemiology. They are also celebrated for mentoring young women scientists who are ...
(Date:2/10/2016)... RICHLAND, Wash., Feb. 10, 2016  IsoRay, Inc. (NYSE ... seed brachytherapy and medical radioisotope applications for the treatment ... cancers, today announced its financial results for the second ... December 31, 2015. --> ... second quarter of fiscal 2016, which ended December 31, ...
(Date:2/10/2016)... , ... February 10, 2016 , ... LATHAM, NEW YORK... ... the SPIE Photonics West conference in San Francisco’s Moscone Center from February ... the same venue. , These latest InGaAs PIN diode standard packages feature a ...
(Date:2/10/2016)... Jolla CA (PRWEB) , ... February 10, 2016 , ... ... new agents for the treatment of Alzheimer’s disease, announced today it has been selected ... February 18th at the Breakers in Palm Beach, Florida. The purpose of the ...
Breaking Biology Technology:
Cached News: