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:5/2/2019)... ... April 30, 2019 , ... Philadelphia intellectual ... to announce that Gunes Bender, Ph.D., a registered patent agent, has joined the ... his new role, Bender provides technical support and scientific expertise in the pharmaceutical ...
(Date:5/2/2019)... ... May 01, 2019 , ... Gateway ... their future children, announces a new publication titled, “ Self-Collection of Maternal Blood ... and Child Health. Previous studies had only shown early gender determination using venous ...
(Date:4/27/2019)... ... April 26, 2019 , ... ... Assessment Report: The Laboratory Analytical & Life Science Instrumentation Industry ," provides ... that include chromatography, life science instrumentation, mass spectrometry, molecular spectroscopy, atomic spectroscopy, ...
Breaking Biology News(10 mins):
(Date:5/4/2019)... PINE BROOK, N.J. (PRWEB) , ... May 03, ... ... visual electrophysiology, announces the release of the Diopsys® ffERG/Photopic Negative Response ... signs of glaucoma. , By 2050, it is estimated that 6.3 million Americans ...
(Date:5/2/2019)... ... May 02, 2019 , ... Boston Robotic Hair ... area. Gone are the days of painful hair transplant procedures. Boston Robotic Hair ... is the only robotic intelligent solution to offer a minimally invasive procedure. With ...
(Date:4/16/2019)... , ... April 16, 2019 , ... ... systems, applications, and technology, today announced that Bank South Pacific (BSP), the largest ... RFP process. The bank awarded Fulcrum a contract to deliver a fingerprint-based Know ...
(Date:4/9/2019)... ... April 09, 2019 , ... USDM ... capacity of life sciences organizations to accelerate innovation and maximize productivity, announces that ... the past 12 months. , USDM’s Cloud Assurance is a managed ...
Breaking Biology Technology:
Cached News: