HOME >> BIOLOGY >> NEWS
Tiny pikas seem to be on march toward extinction in Great Basin

The tiny rabbit-like American pika, an animal species considered to be one of the best canaries in a coal mine for detecting global warming in the western United States, appears to be veering toward the brink of extinction in the Great Basin.

New research indicates the small mammals, which are very sensitive to high temperatures, are being pushed upward in their mountain habitat and are running out of places to live. Climate change and human activities appear to be primary factors imperiling the pika, reports University of Washington archaeologist Donald Grayson in the current issue of the Journal of Biogeography.

Grayson's research which looks at a 40,000-year record of archaeological and paleontological sites, combined with yet unpublished work by several other researchers, paints a bleak future for the American pika (Ochotona princeps) in the Great Basin.

"Human influences have combined with factors such as climate change operating over longer time scales to produce the diminished distribution of pikas in the Great Basin today. This makes controlling our current impacts on them all that more important," said Grayson.

Human activities that appear to impact the animals include the proximity of roads to their habitat and pressure from grazing livestock.

The animals are isolated in patches across mountainous areas in western North America, from the southern Sierra Nevada and Rocky mountains to central British Columbia in Canada. In the Great Basin, these mountains are separated by large valleys with desert-like conditions that pikas can't tolerate. Pikas live in rock-strewn talus slopes that provide them with air-conditioning from hot temperatures and protection from predators.

Grayson's analysis of 57 well-dated archaeological sites, dating as far back as 40,000 years, shows that pikas have been pushed to higher and higher elevations. During the late Pleistocene and early Holocene epochs, 40,000 to about 7,500 yea
'"/>

Contact: Joel Schwarz
joels@u.washington.edu
206-543-2580
University of Washington
29-Dec-2005


Page: 1 2

Related biology news :

1. Penguins march into new park
2. Who gives stem cells their marching orders?
3. Bursts of waves drive immune system soldiers toward invaders
4. A decisive step toward a cure for insulin dependent diabetes
5. Cloned pigs help scientists towards a breakthrough in Alzheimers
6. Paving the way toward a vaccine against Alzheimers disease
7. Latest strategies for moving research toward a cure for diabetes explored at global scientific forum
8. Progress toward a targeted therapy for a specific form of leukemia
9. Tiny clue reveals new path toward heart disease
10. Progress toward artificial photosynthesis?
11. MIT engineer works toward clean water, more

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:12/22/2018)... ... December 21, 2018 , ... ... and hosted the Boston Healthcare Drinks event featuring Helen Chen, Greater China Managing ... China.” , The discussion was moderated by patent attorney David J. Dykeman ...
(Date:12/19/2018)... (PRWEB) , ... December 19, 2018 , ... InTouchMD’s flagship ... innovative products in healthcare for 2018. , PM360 is featuring the recognition in ... products and services offered to the pharmaceutical and medical device industries. , “This ...
(Date:12/18/2018)... ... December 18, 2018 , ... ... cancers and other serious diseases, today announced the publication of an early feasibility ... treatment of rGBM. , The publication of the study, An Early Feasibility ...
Breaking Biology News(10 mins):
(Date:1/7/2019)... ... January 07, 2019 , ... Kainos Medicine Inc. today announced ... candidate, code-named "KM-819." KM-819 is an orally active small molecule that is ... Korea. , This Phase 1 randomized, double-blind, placebo-controlled dose-escalation study was to ...
(Date:12/20/2018)... ... December 20, 2018 , ... New Year’s brings reflection and desire to improve ... the European Union (EU) on the horizon, Jim Kasic, president and CEO of Boulder ... the EU Medical Device Regulation (MDR), digital health, and big data are just a ...
(Date:12/18/2018)... ... ... Patients with early stages of breast cancer who undergo partial breast proton ... irradiation, a new study suggests. , Patients with early stage breast cancer — stage ... the cancerous tumor because there is a 30 to 40 percent change the disease ...
(Date:12/13/2018)... ... December 13, 2018 , ... Microbial Discovery Group LLC (MDG) ... been part of their strategic plan and an important milestone in increasing their ... opportunities for MDG within the $44 Billion human probiotic market. This plan is ...
Breaking Biology Technology:
Cached News: