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:4/26/2016)... -- Research and Markets has announced the ...  report to their offering.  , ,     (Logo: ... forecast the global multimodal biometrics market to grow ... 2016-2020.  Multimodal biometrics is being implemented ... healthcare, BFSI, transportation, automotive, and government for controlling ...
(Date:4/15/2016)... 15, 2016  A new partnership announced today ... underwriting decisions in a fraction of the time ... and high-value life insurance policies to consumers without ... With Force Diagnostics, rapid testing (A1C, Cotinine and ... (blood pressure, weight, pulse, BMI, and activity data) ...
(Date:4/14/2016)... , April 14, 2016 ... and Malware Detection, today announced the appointment of ... the new role. Goldwerger,s leadership appointment comes ... the heels of the deployment of its platform at ... behavioral biometric technology, which discerns unique cognitive and physiological ...
Breaking Biology News(10 mins):
(Date:4/27/2016)... ... ... Cambridge Semantics, the leading provider of Smart Data analytic and data management ... The Silicon Review’s “20 Fastest Growing Big Data Companies of 2016.” , “From ... end users facing some of the most complex data challenges in the industry,” said ...
(Date:4/27/2016)... , ... April 27, 2016 , ... ... Touch screen mobile devices with fingerprint recognition for secure access, voice recognition for ... a few ways consumers are interacting with biometrics technology today. But if ...
(Date:4/27/2016)... Islands (PRWEB) , ... April 27, 2016 , ... ... Ltd. (d/b/a Biohaven) is pleased to announce the appointment of John Tilton as Chief ... an Executive Director and one of the founding commercial leaders responsible for the ...
(Date:4/27/2016)... , ... April 27, 2016 , ... ... simultaneous preclinical PET (Positron Emission Tomography) and MRI (Magnetic Resonance Imaging) in existing ... disease and testing novel treatments in small animal subjects. Simultaneous PET/MRI imaging offers ...
Breaking Biology Technology:
Cached News: