HOME >> BIOLOGY >> NEWS
Taking the long view: examining factors which influence Northern Spotted Owls

When the Northern Spotted Owl (Strix occidentalis caurina) was federally listed as a threatened species in 1990, environmental groups working in the Pacific Northwest quickly embraced the animal as a mascot for the natural areas of the region.

Studies conducted early in the decade indicated that the birds had a strong affinity for old growth trees, and the mature forests were assumed to be equivalent to Spotted Owl habitat.

In the last decade, many acrimonious battles have been pitched over the fate of land which is simultaneously home to the owls and full of economically valuable timber. But beneath the din of these conflicts, little attention has been paid to other factors which may be influencing the species.

Results from a long-term study published this month by the Ecological Society of America provide insight into the population dynamics of these birds of prey and explore the role which climate and habitat quality play in determining the survival of this species.

The study, published in the peer-reviewed ESA journal Ecological Monographs (Vol. 70 no.4), was conducted by Alan B. Franklin and David Anderson of the US Geological Survey at Colorado State University, and R. J. Gutierrez and Kenneth P. Burnham of Humboldt State University (now at the University of Minnesota and the US Geological Survey of Colorado State University, respectively).

The team analyzed data from a ten year study in the forests of Northwestern California where owls were surveyed, their reproductive output recorded, and relative fitness estimated.

The study area, which is centered around Trinity River east of Eureka, is located upon land managed by the US Forest Service and the Bureau of Land Management. The area is considered to be one of the most complex and diverse in the western United States due to its unique blend of coniferous and hardwood trees. The area is logged, however, by timber c
'"/>

Contact: Alison Gillespie
alison@esa.org
202-833-8773 ext 211
Ecological Society of America
16-Nov-2000


Page: 1 2 3 4

Related biology news :

1. Taking aim at bioterrorism: UH professor gets HHS funding to battle anthrax
2. Taking the show on the road - Leading researchers to conduct hands-on science symposium for 500 San Francisco area high school students
3. Taking the pulse of giants: Detecting change and its consequences in western mountain ecosystems
4. Taking vitamin supplements is a common behavior in the U.S.
5. Taking a SNP in the gene pool: Scientists harvest human gene differences
6. Taking The Animal Out Of Animal Testing
7. Possible Dangers Of Taking Over-The-Counter Medications For Hepatitis C Patients
8. National Science Foundation Is Taking Small Business Into A New Phase Of Innovation
9. Digging In And Taking Cover
10. Taking The "Ouch" Out Of Needles: Arrays Of "Microneedles" Offer New Technique For Drug Delivery
11. Intake Of Acetaminophen Increases Risk Of Excessive Anticoagulation In Patients Taking Warfarin

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


(Date:1/4/2019)... FORT WORTH, Texas (PRWEB) , ... January 02, ... ... 2019 catalog. This release is particularly noteworthy, as the life science tools and ... company’s history, it is offering a catalog. The catalog features not just part ...
(Date:12/25/2018)... ... December 24, 2018 , ... Researchers at ... discovered a new use for a long-standing computational concept known as “blacklisting,” which ... files and messages. Using blacklisting as a filter to single out genetic variations ...
(Date:12/19/2018)... (PRWEB) , ... December 19, 2018 , ... ... of a new study in Arthroscopy evaluating the use of novel ... cuff tears (RCTs). These tears represent a painful, disabling condition for which there ...
Breaking Biology News(10 mins):
(Date:1/4/2019)... ... January 02, 2019 , ... ... precancer and cancer cells in blood, has been named as a partner in ... biotech company developing cell therapies for cancer treatment, will use CellMax Life’s circulating ...
(Date:12/19/2018)... ... December 19, 2018 , ... ... first rate Stem Cell Training Course in Las Vegas. Training includes facial rejuvenation, ... procedures explode in popularity nationwide for aesthetics, having the training from expert, Board ...
(Date:12/18/2018)... ... December 18, 2018 , ... ... optimization firm for the life sciences industry, unveiled a completely redesigned website at ... a more user-friendly browsing experience for their valued clients and business partners. ...
(Date:12/13/2018)... Mass. (PRWEB) , ... December 11, 2018 , ... ... biosensor that doctors and nurses can use to quickly detect Clostridium difficile (C. ... be the heart of a handheld device that can be used onsite in ...
Breaking Biology Technology:
Cached News: