HOME >> BIOLOGY >> NEWS
Preventing rapid extinction of bighorn sheep

Why do some bighorn sheep populations die out so fast? While some say the problem is that the populations are too small, new research suggests that primary cause is actually that the habitat patches are too small.

"Expensive management efforts to restore or increase bighorn sheep populations should focus on large habitat patches," say Francis Singer of the U.S. Geological Survey at Colorado State University in Fort Collins and his co-authors in the October issue of Conservation Biology.

Singer and his colleagues determined whether the persistence and growth rate of 24 translocated bighorn sheep populations in Colorado correlated with a variety of factors, including population size, habitat size and quality, ability to migrate, and distance from domestic sheep, which can spread disease to bighorns.

While a number of factors correlated with bighorn persistence, the researchers concluded that the primary factor is habitat size and quality. The small patches in the study averaged 32 square miles, and the large patches averaged 61 square miles. Larger patches have more high quality forage, provide more opportunities to migrate and presumably make it easier to avoid predators. The researchers also found that the populations in larger patches increased faster and were more likely to colonize other habitat patches.

Singer and his colleagues recommend that costly efforts to restore bighorns -- such as creating habitat corridors and water sources -- should focus on populations in large habitat patches rather than on those in small, isolated patches.

While smaller patches generally have smaller populations, the researchers caution that "not all small populations should be written off." Small patches of high-quality habitat could also warrant restoration efforts.


'"/>

Contact: Francis Singer
francis@nrel.colostate.edu
970-491-7056
Society for Conservation Biology
20-Sep-2001


Page: 1

Related biology news :

1. Preventing cancer: Scientists identify a useful piece of JNK
2. Preventing overload in the brain
3. Preventing tumor-cell induced bone disease
4. Jefferson Scientists Find Link Between Learning And Preventing Alzheimers
5. Gene Discovery Paves Way For Preventing Deadly Bacterial Shock
6. Cardiac Clinical Trial Studies Use of Antibiotic In Preventing Heart Attack
7. Drug Therapy Shows Promise In Preventing Hepatitis Infection In Transplant Recipients Who Receive Hepatitis B Positive Livers, Says One Study
8. In New Alzheimers Studies, Lab Tests Show Vitamin E And Other Antioxidants Preventing Brain Cell Death
9. Newly Identified Molecular Mechanism Could Lead To New Approaches For Preventing Heart Attack, Stroke
10. Wistar Scientist To Speak At Toxicology Forum On Effects Of Conjugated Linoleic Acid On Preventing And Reversing Atherosclerosis
11. Suicide Response Gives Colorado State Researchers Important Clues On Preventing Bacterial Invasion In Crops Worldwide

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


(Date:12/18/2018)... ... 18, 2018 , ... CP Merritt is a national champion Arabian horse that ... however in 2006, he had a medical setback that caused him to limp at ... from cartilage degeneration in his right rear fetlock. Such an injury could be ...
(Date:12/13/2018)... ... December 12, 2018 , ... Illumina, Kaiser Permanente, ResMed and ... The San Diego-based team-building and cooking events company has hosted an impressive guest ... cooking challenges. , Each group who visits receives a completely customized experience, ...
(Date:12/6/2018)... ... December 06, 2018 , ... Stewart has been ... contract services, throughout his career. During his recent five-year tenure with InSphero he ... established the commercial laboratory operations in Brunswick, Maine. Through these experiences, Stewart has ...
Breaking Biology News(10 mins):
(Date:1/8/2019)... ... ... The American Society of Gene and Cell Therapy’s (ASGCT) first class ... of industry leaders identified by the ASGCT board of directors. In total, the Society ... ASGCT members designing transformative pilot studies in gene and cell therapy as they prepare ...
(Date:1/4/2019)... ... January 02, 2019 , ... ... detect precancer and cancer cells in blood, has been named as a partner ... global biotech company developing cell therapies for cancer treatment, will use CellMax Life’s ...
(Date:12/19/2018)... ... 2018 , ... RURO, Inc., a leading provider of information ... The new release enhances the latest version of Limfinity®, RURO’s software framework, and ... , Validation protocols, and their execution, are critical for software systems scrutinized by ...
(Date:12/14/2018)... ... 2018 , ... NOVA OCULUS PARTNERS, LLC, and its Canadian ... immediately begin a clinical patient trial in Edmonton using their pioneering technology for ... has granted what is called an Investigational Testing Authorization for the trial, while ...
Breaking Biology Technology:
Cached News: