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:8/14/2019)... ... August 14, 2019 , ... Gateway Genomics , ... children, announces inclusion in the 38th annual Inc. 500|5000 list of fastest ... To qualify, companies must have been founded and generating revenue by March 31, 2015. ...
(Date:8/6/2019)... , ... August 06, 2019 , ... ... stem cell manufacturing with clinical, regulatory and GMP manufacturing experience. In November ... (PSC). With extensive regulatory experience and one of the first ...
(Date:8/4/2019)... N.J. (PRWEB) , ... August 02, 2019 , ... ... to assist the life science industry in advancing the development of medical therapies, ... been recognized by PharmaVOICE magazine as one of the “100 Most Inspiring People ...
Breaking Biology News(10 mins):
(Date:8/14/2019)... (PRWEB) , ... August 13, 2019 , ... ... Colorado to focus on prepackaged mobile phases for QC laboratories. After gaining a ... from its laboratory sciences approach into a valued supplier of manufacturing processing solutions, ...
(Date:8/6/2019)... (PRWEB) , ... August 06, 2019 , ... ... Radio (LSMR) have joined forces in launching the biweekly SDBN BUZZ podcast focused ... growth. SDBN BUZZ podcast will also serve to promote the region and attract ...
(Date:8/6/2019)... (PRWEB) , ... August 06, 2019 , ... ... Illinois University Edwardsville for the launch of a community project that will engage ... three-year grant supports the project, entitled “A Youth-Led Citizen Science Network for Community ...
(Date:7/26/2019)... ... July 25, 2019 , ... ... off-the-record collaboration and dialogue, today announces its Boston BD conference to ... part of Biotech Week Boston , the event provides an opportunity for ...
Breaking Biology Technology:
Cached News: