Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Wolverine population threatened by climate change

04.02.2011
The aggressive wolverine may not be powerful enough to survive climate change in the contiguous United States, new research concludes.

Wolverine habitat in the northwestern United States is likely to warm dramatically if society continues to emit large amounts of greenhouse gases, according to new computer model simulations carried out at the National Center for Atmospheric Research (NCAR).

The study found that climate change is likely to imperil the wolverine in two ways: reducing or eliminating the springtime snow cover that wolverines rely on to protect and shelter newborn kits, and increasing August temperatures well beyond what the species may be able to tolerate.

Wolverines make their home mainly in the boreal forests and tundra regions of North America, Europe, and Asia. (Photo by Vince Maidens, Creative Commons License.)“Species that depend on snow cover for their survival are likely to be very vulnerable to climate change,” says NCAR scientist Synte Peacock, the author of the study. “It’s highly uncertain whether wolverines will continue to survive in the lower 48, given the changes that are likely to take place there.”

Peacock’s research focused on mountainous regions of the Northwest, the primary habitat of the wolverine population in the contiguous United States. The study did not look into the impacts of climate change on regions where wolverines are more numerous, such as Canada, although other research has indicated those areas will likely warm significantly as well.

The study was published last week in Environmental Research Letters. It was funded by the National Science Foundation, NCAR’s sponsor.

An animal built for the cold
Wolverines make their home mainly in the boreal forests and tundra regions of North America, Europe, and Asia. Their thick, oily fur insulates them from frost and large padded paws help them run through deep snow. While some 15,000 or more wolverines are believed to roam Canada and an unknown number in Alaska, only a few dozen to a few hundred are believed to live in the contiguous United States, almost entirely in mountainous areas in Wyoming, Idaho, Montana, and Washington.

Wolverines inhabit regions that have late-season snow cover and relatively cool summer temperatures. Female wolverines make their springtime dens in the snow, which provides warmth to the newborn kits and protects them from predators.

Biologists are dubious that the species could survive in regions with little spring snow or significantly higher summertime temperatures. Concerned over habitat loss and the potential threat of climate change, the U.S. Fish & Wildlife Service announced in December 2010 that the wolverine warrants protection under the Endangered Species Act, but delayed that protection because other species took higher priority.

To project the future climate in regions of the contiguous United States where wolverines live, Peacock analyzed results from new simulations carried out by a team of researchers at NCAR using the newest version of the Community Climate System Model (which was developed by scientists at the Department of Energy and NCAR with colleagues at other organizations). She analyzed three scenarios of greenhouse gas emissions: low (carbon dioxide emissions stay at present-day levels until 2020 and then decline to zero by the early 2080s); medium-low (emissions rise slightly until 2040 and then decline sharply toward the end of the century); and high (emissions continue to increase unabated).

In the high emissions scenario, the computer simulations showed spring snow cover nearly or completely vanishing during the second half of this century in present-day wolverine habitat. Similarly, spring snow cover in the medium-low scenario became greatly diminished, with many years experiencing zero snow cover. Under the low emissions scenario, springtime snow cover conditions remained similar to those of the present day.

Synte Peacock (©UCAR, Photo by Carlye Calvin. This image is freely available for media use. For more information, see Media & nonprofit use.*)The computer projections also showed that August temperatures may increase dramatically. Whereas August temperatures currently top off at about 72 degrees F (22 degrees C) in areas where wolverines live, maximum daily temperatures by the end of the century were projected to frequently exceed 90 degrees F (32 degrees C) under the two higher-emissions scenarios.

“Unless the wolverine is able to very rapidly adapt to summertime temperatures far above anything it currently experiences, and to a spring with little or no snow cover, it is unlikely that it will continue to survive in the contiguous U.S. under a high or medium-low emissions scenario,” the study concludes.

The model simulations also indicated the extent to which climate change may transform the West, where society depends on mountain snowpack. This critical source of water could decrease by a factor of three to four over Idaho, western Montana, and western Wyoming by the end of this century under the high emissions scenario. Even under the medium-low emissions scenario, snowpack could drop by a factor of two to three in these regions.

Peacock checked the accuracy of the model by comparing simulations of late 20th century climate with observations. Results indicated that the model did a good job simulating climate conditions in Idaho, Montana, and Wyoming. Since the model tended to underestimate snowpack in Washington, Peacock did not include that state in the study.

About the article
Title: Projected 21st century climate change for wolverine habitats within the contiguous United States

Author: Synte Peacock

Publication: Environmental Research Letters, January 27, 2011

David Hosansky | EurekAlert!
Further information:
http://www.ucar.edu
http://www2.ucar.edu/news/3783/wolverine-population-threatened-climate-change

More articles from Ecology, The Environment and Conservation:

nachricht Global threat to primates concerns us all
19.01.2017 | Deutsches Primatenzentrum GmbH - Leibniz-Institut für Primatenforschung

nachricht Reducing household waste with less energy
18.01.2017 | FIZ Karlsruhe – Leibniz-Institut für Informationsinfrastruktur GmbH

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

A big nano boost for solar cells

18.01.2017 | Power and Electrical Engineering

Glass's off-kilter harmonies

18.01.2017 | Materials Sciences

Toward a 'smart' patch that automatically delivers insulin when needed

18.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>