Navigation Links
Small mammals -- and rest of food chain -- at greater risk from global warming than thought
Date:5/23/2010

The balance of biodiversity within North American small-mammal communities is so out of whack from the last episode of global warming about 12,000 years ago that the current climate change could push them past a tipping point, with repercussions up and down the food chain, say Stanford biologists. The evidence lies in fossils spanning the last 20,000 years that the researchers excavated from a cave in Northern California.

What they found is that although the small mammals in the area suffered no extinctions as a result of the warming that occurred at the end of the Pleistocene epoch, populations of most species nonetheless experienced a significant loss of numbers while one highly adaptable species the deer mouse thrived on the disruptions to the environment triggered by the changing climate.

"If we only focus on extinction, we are not getting the whole story," said Jessica Blois, lead author of a paper detailing the study to be published online by Nature on May 23. "There was a 30 percent decline in biodiversity due to other types of changes in the small-mammal community."

The double whammy of late Pleistocene warming, coupled with the coinciding arrival of humans on the North American continent, took a well-documented heavy toll on the large animals. Almost a third of the big, so-called "charismatic" animals the ones with the most popular appeal for humans, such as mammoths and mastodons, dire wolves and short-faced bears went extinct. But until now, little had been done to explore the effects of that climate shift on smaller fauna.

"We were interested in the small animals because we wanted to know about the response of the survivors, the communities of animals that are still on the landscape with us today," said Elizabeth Hadly, professor of biology and a coauthor of the paper. "We focused not only on the Pleistocene transition, but also the last 10,000 or so years since then."

Blois and Hadly exc
'/>"/>

Contact: Louis Bergeron
louisb3@stanford.edu
650-725-1944
Stanford University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Even small patches of urban woods are valuable for migrating birds
2. EPA awards small businesses to develop new environmental technologies
3. UCLA researchers show how worlds smallest coffee ring may help biosensors detect disease
4. Weird, ultra-small microbes turn up in acidic mine drainage
5. Moffitt Cancer Center: Growing interest in prognostic test for non-small cell lung cancer
6. Bacterial food supplements for small algae
7. Study finds that low-income women living in small cities have higher chance of obesity
8. University of Minnesota scientist finds that big plant seeds dont always beat out small seeds
9. Lifes smallest motor, cargo carrier of the cells, moves like a seesaw
10. Small liquid sensor may detect cancer instantly, could lead to home detection kit
11. Even small dietary reductions in salt could mean fewer heart attacks, strokes and deaths
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Small mammals -- and rest of food chain -- at greater risk from global warming than thought
(Date:11/3/2014)... and preterm birth are linked to increased risk for ... the American College of Rheumatology (ACR) journal, Arthritis ... and pre-term babies were not at greater risk of ... According to the ACR, 27 million Americans over the ... of OA range from mild to severe and include ...
(Date:11/2/2014)... ORLEANS, LA (2 November 2014)—In support of a bold ... Bill & Melinda Gates Foundation today announced an award ... Malaria Vaccine Initiative (MVI) in building new vaccines that ... help realize the "accelerating to zero" agenda. Such vaccines ... what could be called an "immunological bed net." ...
(Date:11/2/2014)... bar and bump into a biologist . . . , ... nerd sketch, researchers have taken this premise and applied it ... meaning in the rising oceans of genomic data. , In ... genome-wide studies are publishing at a dizzying rate. The challenge ... from the noise (and there is no shortage of noise). ...
Breaking Biology News(10 mins):Preterm, low birth-weight babies may need new hips in adulthood 2New malaria vaccines to prevent infection and block transmission get a shot in the arm 2New malaria vaccines to prevent infection and block transmission get a shot in the arm 3New malaria vaccines to prevent infection and block transmission get a shot in the arm 4Mutant models 2Mutant models 3Mutant models 4
... spit out the bad. A new study from the Monell ... gatekeeper. The research shows that strong bitter taste in and ... of nausea and display a pattern of stomach activity characteristic ... of quality of life for many people, including pregnant women, ...
... booms, the science of making music, the impact of noise ... just some of the intriguing topics that will be presented ... (ASA). The meeting will take place May 23-27, ... The ASA offers complimentary press registration to bona fide working ...
... you don,t swallow it at allis enough to cause that ... according to a new study reported in the April 12th ... work shows that our body and our physiology anticipate the ... contain toxins or anti-nutrients," said Paul Breslin of the Monell ...
Cached Biology News:The nauseating taste of bitter 2The science of sound 2The science of sound 3The science of sound 4The science of sound 5The science of sound 6Bitterness induces nausea, swallowing not required 2
(Date:11/21/2014)... Nov. 20, 2014 /PRNewswire/ - BIOREM Inc. (TSXV: BRM) ("Biorem" or "the ... periods ended September 30, 2014.  Biorem,s complete 2014 third quarter financial ... Financial Summary:Three-months ended September 30, , Nine-months ... data) , 2014 , 2013 , ... , 5,281 , 6,715 , 14,476 ...
(Date:11/18/2014)... FL (PRWEB) November 17, 2014 ... point-of-care diagnostic tests – today announces its third ... and Prevention’s (CDC) Get Smart About Antibiotics Week ... Week is a national campaign designed to highlight ... health departments, and non-profit and for-profit partners to ...
(Date:11/18/2014)... 17, 2014 pH measurement and control ... the pharmaceutical, chemical, and food and beverage industries. But ... and how do pH sensors work? METTLER TOLEDO has ... in process industries with these questions and more. , ... in the process industries. The actual sensor, the pH ...
(Date:11/18/2014)... 18, 2014 Alanda Software, a ... Reporting solutions, announced today that a top tier ... Consummate Provider™ solution in both the U.S. and ... SaaS based, Data Quality remediation portal, designed to ... party Providers improve their ability to capture, transmit ...
Breaking Biology Technology:Biorem Reports Third Quarter Results 2Biorem Reports Third Quarter Results 3RPS Again Partners with the CDC in Support of the 2014 Get Smart About Antibiotics Week 2RPS Again Partners with the CDC in Support of the 2014 Get Smart About Antibiotics Week 3pH Guide from METTLER TOLEDO Explains Measurement, Theory and Practice of pH Applications 2Alanda Software Completes Successful Implementation of Global Data Quality & Vendor Management Solution for Top Tier Global Biopharmaceutical Company 2
... -- China-Biotics,Inc. (OTC Bulletin Board: CHBT) ("China-Biotics," "the ... research, development,marketing and distribution of probiotics products, today ... plant at Qing Pu, Shanghai., "The new ... the cornerstone of our,growth strategy. We have put ...
... drive solid ... earnings growth., ST. DAVID,S, Bermuda, May ... for the quarter ended,March 31, 2008. Revenue in the quarter ended March ... quarter. The primary,drivers of the increase in revenue were the net sales ...
... ... AI programs - ... TSX symbol: SBS, CALGARY, May 9 /PRNewswire-FirstCall/ - SemBioSys Genetics Inc.,(TSX:SBS), ... announced its,2008 first quarter operational and financial results., Highlights, - ...
Cached Biology Technology:China-Biotics, Inc. Completes Foundation for Its New Plant 2Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 2Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 3Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 4Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 5Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 6Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 7Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 8Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 9Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 10Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 11Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 12Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 13Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 14Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 15Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 16Warner Chilcott Reports Operating Results for the Quarter ended March 31, 2008 and Updates 2008 Full Year Guidance 17SemBioSys announces first quarter 2008 financial and operational results 2SemBioSys announces first quarter 2008 financial and operational results 3SemBioSys announces first quarter 2008 financial and operational results 4SemBioSys announces first quarter 2008 financial and operational results 5SemBioSys announces first quarter 2008 financial and operational results 6SemBioSys announces first quarter 2008 financial and operational results 7SemBioSys announces first quarter 2008 financial and operational results 8SemBioSys announces first quarter 2008 financial and operational results 9SemBioSys announces first quarter 2008 financial and operational results 10SemBioSys announces first quarter 2008 financial and operational results 11SemBioSys announces first quarter 2008 financial and operational results 12
...
One-step, microplate or cuvet, colorimetric, detection range 0.3 g/dL to 5 g/dL. Procedure: 5 min....
Donor Goat Serum...
The Varian 4000 GC/MS system offers three easily switchable ionization configurations: internal ionization (II), external ionization (EI) or hybrid chemical ionization (CI)...
Biology Products: