Free Newsletters - Space News - Defense Alert - Environment Report - Energy Monitor
. Earth Science News .




CLIMATE SCIENCE
Hibernation altered by climate change takes a toll on Rocky Mountain animal species
by Staff Writers
Edmonton, Canad (SPX) Aug 14, 2012


File image.

Climate change is causing a late wake-up call from hibernation for a species of Rocky Mountain ground squirrel and the effect is deadly. A University of Alberta-led international research team examined data on a population of Columbian ground squirrels and found a trend of late spring snow falls has delayed the animals' emergence from hibernation by 10 days over the last 20 years.

U of A Evolutionary Ecologist Jeff Lane explained that Columbian ground squirrels are on a tight schedule; Females mate four days after emerging from hibernation. They give birth 24 days later. The newborns are nursed for 28 days, and then they're on their own.

"Losing just 10 days during their short active period reduces their opportunity to eat enough food so they can survive through the next hibernation period of eight to nine months," said Lane.

Research shows there's little wiggle room in the ground squirrel's life cycle. The period of plant growth, their food supply, is only three to four months long on their home turf, skirting the Rocky Mountains

"Our data shows that over the life of the study, the survival rate of adult females has fallen by 20 per cent and much of this could be due to late emergence from their burrows brought on by late spring snowfalls, "said Lane. " The researchers say the study area's population has gone from one of growth 20 years ago to its current state of just maintaining population stability.

The study area is a 200-metre by 400-metre block in a sub-alpine meadow west of Calgary. Lane says the data was collected through observation and by trapping and releasing all the ground squirrels in the study area to monitor their condition.

The study area was set up by U of A biologists in 1992. Lane began his hibernation study five years ago and collaborated with researchers in Scotland, France and the U of A. Lane was the lead researcher on the paper that was published August 8, in the online edition of the journal Nature.

.


Related Links
University of Alberta
Climate Science News - Modeling, Mitigation Adaptation






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





CLIMATE SCIENCE
Diseased trees new source of climate gas
New Haven CT (SPX) Aug 13, 2012
Diseased trees in forests may be a significant new source of methane that causes climate change, according to researchers at the Yale School of Forestry and Environmental Studies in Geophysical Research Letters. Sixty trees sampled at Yale Myers Forest in northeastern Connecticut contained concentrations of methane that were as high as 80,000 times ambient levels. Normal air concentrations ... read more


CLIMATE SCIENCE
Fukushima caused mutant butterflies: scientists

Fukushima caused mutant butterflies: scientists

Retreat never an option: ex-Fukushima chief

Urban disasters spotlight strain on Asian cities

CLIMATE SCIENCE
Tablet line aimed at retail staff

SciTechTalk: Are PCs desktop dinosaurs?

Wired reporter hack reveals perils of digital age

Latin America poised for a lithium boom

CLIMATE SCIENCE
China's water at risk from coal projects

Bill Gates kicks off search for toilet of the future

Brazil court orders work on Amazon dam suspended

El Nino may be under way: Japan weather agency

CLIMATE SCIENCE
Melting ice opens Northwest Passage

Tropical climate in the Antarctic

Aerial photos reveal dynamic ice sheet

Russian icebreaker sets out for expedition

CLIMATE SCIENCE
Rooftop farms flourish in space-starved Hong Kong

New technology eliminates plant toxins

Researchers Demonstrate Control of Devastating Cassava Virus in Africa

Hong Kong tests babies over Japanese milk formula

CLIMATE SCIENCE
Flooding in central Nigeria kills at least 28 people

Iran pair rescued from quakes after three days: reports

Philippines storm brings more floods, landslides

NASA Global Hawk Pilots Face Challenges Flying Hurricane Missions

CLIMATE SCIENCE
Eight Ugandans survive army helicopter crash; two dead

'Very little' done on Mali military action: defence minister

CCTV: Africa's true image or China's strategic vehicle?

Nigeria's Boko Haram now political issue

CLIMATE SCIENCE
Early human ancestors had more variable diet

Researchers develop new physical face cloning method

It's in our genes: Why women outlive men

Later Stone Age got earlier start in South Africa than thought




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement