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:7/10/2014)... , June 27, 2014  The American Academy ... Institute of Standards and Technology (NIST) and the ... academic research and forensic science expert members to ... is an element of the NIST,s Organization of ... among the first appointments made to the new ...
(Date:7/10/2014)... 30, 2014  Aware, Inc. (NASDAQ: AWRE ... previously announced on June 26, 2014 that its Board ... $1.75 per share, or approximately $40 million in total.  ... 2014 and a payment date of July 24, 2014.  ... had set an ex-dividend date for this special cash ...
(Date:7/10/2014)... 2014  Unisys Corporation,s (NYSE: UIS ) subsidiary ... today announced that it has been selected by the Dutch ... new Basic Provision Biometrics solution for penitentiaries across ... contract with a solution based on its open standards-based ... the contract is up to seven years, with the new ...
Breaking Biology News(10 mins):Ten Members of the American Academy of Forensic Sciences Appointed to Forensic Science Standards Board (FSSB) 2Ten Members of the American Academy of Forensic Sciences Appointed to Forensic Science Standards Board (FSSB) 3NASDAQ Sets Ex-Dividend Date for Aware, Inc.'s Special Cash Dividend of $1.75 Per Share 2Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 2Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 3
... first time, UK scientists have reported direct evidence that taking ... of cancer. The results were reported at the 35th ... Milan, Italy. The link between smoking and cancer has ... the Cancer Research UK Institute of Cancer Studies, Birmingham, who ...
... cancer patients seem to live longer and experience delays in ... molecule called MET is added to treatment with erlotinib, the ... David Spigel, Director of lung cancer research for the Sarah ... at the 35th Congress of the European Society for Medical ...
... Researchers at the University of Illinois at Chicago College of ... drug resistance is ramped up in unusual types of breast ... study is published in the Oct. 8 issue of the ... a paper of the week. Approximately 70 percent of ...
Cached Biology News:Study reveals cancer-linked epigenetic effects of smoking 2New targeted therapy adds benefit to erlotinib in some patients with advanced lung cancer 2Clue to unusual drug-resistant breast cancers found 2
(Date:7/11/2014)... 11, 2014 /PRNewswire-iReach/ -- Maxim Peptide, a website that ... used solely in scientific experiments, is currently celebrating its ... business, Maxim Peptide, which was created by the founders ... and updated website that now features a special deals ... updated with fascinating articles about peptide research, including a ...
(Date:7/11/2014)... 2014 Research and Markets  has announced ... - Global Industry Analysis, Size, Share, Growth, Trends and ... http://photos.prnewswire.com/prnh/20130307/600769 Transfection ... DNA or RNA) into cells. This technology helps the ... and protein metabolism by affecting the nuclear genes. The ...
(Date:7/11/2014)... GENEVA , July 11, 2014 ... pleased to announce the appointment of John P. ... Campus Biotech   in  Geneva . ... on Campus Biotech in Geneva , ... internationally recognised neuroscientists. John P. Donoghue , founder ...
(Date:7/11/2014)... 11, 2014  Researchers have pioneered a revolutionary ... new technology, called Virtual Finger, allows scientists to ... neurons and synapses using the flat surface of ... 3D imaging studies orders of magnitude more efficient, ... level across many areas of experimental biology. The ...
Breaking Biology Technology:Maxim Peptide Celebrates Second Anniversary Online with an Updated Website and Special Deals Section 2International Transfection Technology Market - Industry Analysis, Size, Share, Growth, Trends and Forecast to 2019 2John P. Donoghue is Taking the Lead at the Wyss Center and is Appointed Professor at EPFL and University of Geneva 2John P. Donoghue is Taking the Lead at the Wyss Center and is Appointed Professor at EPFL and University of Geneva 3Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 2Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 3
... DIEGO, June 4 Anadys Pharmaceuticals, Inc. (Nasdaq: ... operations on the development of ANA598, in particular a proposed ... combination with pegylated interferon-alpha and ribavirin. , ... suspend further development of ANA773 and is reducing its workforce ...
... Push of a Button , , CLEVELAND, June 4 ... the patented probiotic strain Ganeden BC30 (R), today announced a ... beverage using PowerCap(R) technology, the innovative bottle cap dispensing system. ... with the press of a button, creating a new category ...
... Roche at 69th Scientific Sessions , , SAN ... VIAP ), a biotechnology company focused on the ... metabolic disease, announced today that preclinical data related to ... presented in a poster presentation at the 69th Scientific ...
Cached Biology Technology:Anadys Pharmaceuticals, Inc. Announces Strategic Restructuring to Focus Operations on Continuing the Advancement of ANA598 2Anadys Pharmaceuticals, Inc. Announces Strategic Restructuring to Focus Operations on Continuing the Advancement of ANA598 3Anadys Pharmaceuticals, Inc. Announces Strategic Restructuring to Focus Operations on Continuing the Advancement of ANA598 4Anadys Pharmaceuticals, Inc. Announces Strategic Restructuring to Focus Operations on Continuing the Advancement of ANA598 5Ganeden Biotech, Liquid Health Labs Unveil New Drink Technology 2Ganeden Biotech, Liquid Health Labs Unveil New Drink Technology 3VIA Pharmaceuticals' DGAT1 Inhibitors Featured in American Diabetes Association Poster Presentation 2VIA Pharmaceuticals' DGAT1 Inhibitors Featured in American Diabetes Association Poster Presentation 3VIA Pharmaceuticals' DGAT1 Inhibitors Featured in American Diabetes Association Poster Presentation 4
... Versatile, modular, computer controlled pre-amplifier suitable for ... isolated electrode input for recording physiological signal ... and a transducer input for use with ... transducers. Additional options include a stimulus artefact ...
SYBR Green Nucleic Acid Dye...
... from an inert polymer with a unique split ... split septum caps for use with 384-well tall-chimney ... when used in conjunction with screw or clip-down ... pipetting equipment 384 septum caps may be ...
... ion chromatography system . The sensitive conductivity ... to 5000S, houses the measuring cell in a ... is available. Data processing is provided by ... is by the high pressure CE 4100 dual ...
Biology Products: