Navigation Links
Bald eagle diet shift enhances conservation
Date:5/3/2010

Washington, D.C.An unprecedented study of bald eagle diet, from about 20,000 to 30,000 years ago to the present, will provide wildlife managers with unique information for reintroducing Bald Eagles to the Channel Islands off California. The scientists, including researchers from the Carnegie Institution's Geophysical Laboratory, found that eagles fed mainly on seabirds from about 20,000 to 30,000 years ago to the 1840s and 50s, when humans introduced sheep. The seabirds provided an abundant source of carrion for the local eagle population until the pesticide DDT wiped out the eagles in the 1960s. The results are published in the online early edition of the Proceedings of the National Academy of Sciences USA the week of May 3, 2010.

"Reintroducing bald eagles to the Channel Islands has had mixed results," remarked lead author Seth Newsome, a postdoctoral researcher at Carnegie at the time of the study.* "An understanding of their diet is critical to successful reintroduction, so we looked for chemical traces of the foods the eagles consumed over many millennia. Since bald eagles are extremely opportunistic, they can quickly adapt to changes in the prey base of the diverse ecosystems they inhabit. Because there are no sheep on the islands today and the seabird populations are diminished, we think that the introduced eagles could scavenge seal or seal lion carrion, exert predation pressure on a threatened but recovering local seabird population, or even prey on the endangered island fox."

"Each of these sources has its challenges for wildlife managers," Newsome continued. "Several studies have shown that seals and sea lions are contaminated with pollutants, and a growing bald eagle population could potentially exert significant predation pressure on the fragile fox and seabird populations."

The scientists used a technique called stable isotope analysis of eagle bone and feather remains primarily from a historic nest on San M
'/>"/>

Contact: Seth Newsome
snewsome@uwyo.edu
831-566-3276
Carnegie Institution
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Decline in Alaskan sea otters affects bald eagles diet
2. Paradigm shift in Alzheimerss research: new treatments
3. Study links success of invasive Argentine ants to diet shifts
4. Conservation strategies must shift with global environmental change, says CU-Boulder study
5. Climate change causing significant shift in composition of coastal fish communities
6. During exercise, the human brain shifts into high gear on alternative energy
7. Shifts in soil bacterial populations linked to wetland restoration success
8. Host shift triggers cascading effect on ecosystem, research finds
9. A paradigm shift in immune response regulation
10. Smoke from cigarettes, cooking oil, wood, shift male cardiovascular system into overdrive
11. Smoke from cigarettes, cooking oil, wood, shift male cardiovascular system into overdrive
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Bald eagle diet shift enhances conservation
(Date:12/10/2014)... RALEIGH, N.C. , Dec. 9, 2014  Valencell, ... announced it is seeing a staggering demand from its ... demand, the Company revealed, is not solely coming from ... industries as well. "A wearable is only ... a result, accuracy is the ultimate driver in long-term ...
(Date:12/10/2014)... CIE San Diego has launched an innovative ... tissue that enhances care coordination among social service and ... information; earned a second $1 million grant from the ... aging in community and; will be recognized as a ... 4-6p. CIE San Diego today announced ...
(Date:12/10/2014)... , December 9, 2014 ... ITN,s BCARD Platform   ... enterprise meeting scheduling solutions for business-to-business (B2B) events, ... world leader in mobile near-field communication (NFC), Bluetooth ...      (Logo: http://photos.prnewswire.com/prnh/20140612/691055) , Jifflenow ...
Breaking Biology News(10 mins):Wearable Technology Products Demand Highly Accurate Biometric Technology 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 2Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 3Community Information Exchange San Diego Launches Pilot, Secures $1 Million Expansion Grant, and Becomes a "Live Well San Diego" Partner 4Jifflenow And ITN International Bring Cutting-Edge Badge Scanning Technology To B2B Events 2Jifflenow And ITN International Bring Cutting-Edge Badge Scanning Technology To B2B Events 3
... coin or a watch can be dangerous for people ... is allergic to the metal. "This raises the question ... Professor Dr. Markus Rettenmayr of the Friedrich Schiller University ... for cardiovascular implants in minimal invasive surgery. Once implanted, ...
... CHICAGO Solving crucial environmental issues such as ... interests, uncertainty and risk, and this is best ... Arizona State University Barrett Honors College ... which scientists, stakeholders and policy makers can communicate ...
... a range of climate change mitigation scenarios are discussed, ... of sulfate particles into the atmosphere to reflect sunlight ... a severe threat if not maintained indefinitely and supported ... The new study, published today, 18 February, in IOP ...
Cached Biology News:Metal in the heart is non-hazardous to health 2Environmental issues examined through cohesive efforts 2Researchers warn against abrupt stop to geoengineering method 2
(Date:12/24/2014)... Dec. 24, 2014   BioLife Solutions , Inc. ... and marketer of proprietary clinical grade hypothermic storage ... precision thermal shipping products for cells and tissues  ... hold its 2015 Annual Meeting of Stockholders on May ... expected date for the Annual Meeting represents a change ...
(Date:12/24/2014)... MD (PRWEB) December 23, 2014 ... into law H.R. 83, the Omnibus and Continuing ... first time, made hydrocephalus a condition eligible to ... Programs (CDMRP) administered by the Department of Defense ... with its allies on Capitol Hill, is celebrating ...
(Date:12/24/2014)... December 23, 2014 Pipette.com announces their ... Twitter followers can submit their #HolidayInTheLab pictures for a ... lab mates. , For those struggling to think of ... Pipette.com Holiday in the Lab Contest provides the ideal ... followers to send pictures of their chemistree, holiday ...
(Date:12/24/2014)... SARASOTA, Fla. , Dec. 23, 2014  Rock ... today that it has filed a Clinical Trial Application ... Medicines Healthcare products Regulatory Agency (MHRA) seeking regulatory approval ... its lead molecule, Anatabine Citrate. Contingent on ... to conduct a Phase I trial to assess the ...
Breaking Biology Technology:BioLife Solutions Sets Date for Annual Meeting of Stockholders 2Rare Brain Condition Now Eligible for Department of Defense Research Dollars 2Major Pipette Distributor Pipette.com Announces their Holiday in the Lab Contest 2Rock Creek Pharmaceuticals Files Clinical Trial Application in the UK for Clinical Trials of Anatabine Citrate Formulations 2Rock Creek Pharmaceuticals Files Clinical Trial Application in the UK for Clinical Trials of Anatabine Citrate Formulations 3
... , , ... , , , Duplications and ... different methods are used for detecting such rearrangements,most based on either ... accurate, but very labour intensive and expensive,while quantitative PCR methods are ...
... , ... , , , Slab ... the separated bands,of an unknown sample to a known,standard (size ... estimated. The Agilent,2100 bioanalyzer is an instrument,which utilizes LabChip,technology to ...
... , , ... , , , , Gene expression ... for analyzing cellular behavior in a micro,scale and is used in ... of RNA from specific cell,populations out of their surrounding tissue environment. ...
Cached Biology Technology:Rapid detection of genomic,duplications and deletions using,the Agilent 2100 bioanalyzer 2Rapid detection of genomic,duplications and deletions using,the Agilent 2100 bioanalyzer 3Rapid detection of genomic,duplications and deletions using,the Agilent 2100 bioanalyzer 4Rapid detection of genomic,duplications and deletions using,the Agilent 2100 bioanalyzer 5High resolution DNA analysis with the,DNA 500 and DNA 1000 LabChip kits 2High resolution DNA analysis with the,DNA 500 and DNA 1000 LabChip kits 3High resolution DNA analysis with the,DNA 500 and DNA 1000 LabChip kits 4High resolution DNA analysis with the,DNA 500 and DNA 1000 LabChip kits 5Quality assurance of RNA derived from,laser microdissected tissue samples,obtained by the PALM MicroBeam System,using the RNA 6000 Pico LabChip kit. 2Quality assurance of RNA derived from,laser microdissected tissue samples,obtained by the PALM MicroBeam System,using the RNA 6000 Pico LabChip kit. 3Quality assurance of RNA derived from,laser microdissected tissue samples,obtained by the PALM MicroBeam System,using the RNA 6000 Pico LabChip kit. 4Quality assurance of RNA derived from,laser microdissected tissue samples,obtained by the PALM MicroBeam System,using the RNA 6000 Pico LabChip kit. 5Quality assurance of RNA derived from,laser microdissected tissue samples,obtained by the PALM MicroBeam System,using the RNA 6000 Pico LabChip kit. 6Quality assurance of RNA derived from,laser microdissected tissue samples,obtained by the PALM MicroBeam System,using the RNA 6000 Pico LabChip kit. 7Quality assurance of RNA derived from,laser microdissected tissue samples,obtained by the PALM MicroBeam System,using the RNA 6000 Pico LabChip kit. 8
... Polymerase is ideal for high-fidelity amplification ... such as cloning and mutagenesis. ... proprietary enzyme preparation containing recombinant DNA ... (3'Cut Site5' exonuclease) activity. Platinum ...
... PLAU N-term Antibody This antibody is generated ... synthetic peptide selected within aa 50~150 of ... in PBS with 0.09% (W/V) sodium azide. ... G column and eluted out with both ...
...
Human interferon-beta (IFN-beta). Recognizes amino acids 30-47 of IFN-beta. No cross-reactivity with Human IFN-alpha or IFN-gamma....
Biology Products: