HOME >> BIOLOGY >> NEWS
USGS at The Wildlife Society: From sea-ice change to contaminants to predators and prey

ea. Brown bears are the main predator of tundra swan nests on our study area and the density of bears on the road system was more than 3 times lower than in adjacent areas. We believe that the relatively low density of bears on the road system is a major factor in explaining the higher nest survival rates in that area. Brandt Meixell (Institute of Arctic Biology and Department of Biology and Wildlife, Univ. Alaska, Fairbanks) and Paul Flint (USGS) and others, Session 17, Monday, Sept. 25, 2006, 10:50-11:10 a.m.

Polycyclic aromatic hydrocarbon (PAH) exposure in seaducks, eastern Aleutian Islands:

As an indicator of hydrocarbon exposure, scientists measured enzyme reaction (cytochrome P450 IA induction) in Steller's eiders and harlequin ducks captured and released at industrial and non-industrial sites at Unalaska, Popof, and Unga Islands, in winters 2002-03. They also measured PCBs in seaduck bloods as a confounding factor of P450 induction, and PAHs and other organic contaminants in prey and habitat. Seaducks captured at industrial sites had high measurements of P450 induction (relative to those from non-industrial sites) that were more strongly correlated to concentrations of PAHs in invertebrate prey than PCB concentrations in the seaducks' blood. Keith Miles will discuss these and additional results from this study. Sea ducks are being studied because of evidence indicating widespread declines in this group. Pollution or exposure to environmental contaminants in wintering areas may be a potential contributing factor in these declines. Keith Miles, Session 40, Tuesday, Sep 26, 2006, 4:10 - 4:30 p.m.

Spatial and trophic variations in environmental contaminants among Aleutian Islands birds:

Persistent organochlorines and mercury are elevated throughout the coastal food chain of the Aleutian Archipelago but the sources of these contaminants are unclear. Scientists used seabirds and a terrestrial bird species alon
'"/>

Contact: Catherine Puckett
cpuckett@usgs.gov
352-264-3532
United States Geological Survey
25-Sep-2006


Page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Related biology news :

1. World Wildlife Fund warns against iron dumping experiment near the Galapagos Islands
2. The Institute of Ecosystem Studies recognized by the Wildlife Society
3. Urban Wildlife Management book something to crow about
4. Scientists: Wildlife corridors benefit plant biodiversity, native plants
5. Wildlife Conservation Society joins Climate, Community & Biodiversity Alliance
6. Wildlife conservation and energy devt study seeks balance in Rockies
7. Wildlife researchers identify impacts of contamination in amphibians
8. Wildlife professor updates best available science on Florida panther
9. Injured whooping crane recovering at USGS Patuxent Wildlife Research Center
10. Climate change isolates Rocky Mountain butterflies
11. Climate change and permafrost thaw alter greenhouse gas emissions in northern wetlands

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


(Date:1/7/2020)... ... January 06, 2020 , ... Myant Inc. , the pioneers in Textile ... bring to life its vision of a world where textile-based interfaces knitted into everyday ... digital sphere, and the physical IoT-enabled environment. The experience at Myant’s booth will challenge ...
(Date:12/30/2019)... ... 30, 2019 , ... Cure Now ? Instead of Palliative ... is the 6th leading cause of death in the United States. , ... other dementia. ,     These caregivers provided an estimated 18.5 billion hours of ...
(Date:12/21/2019)... ... ... The City of Tampa recently served as the host location of the ... Tampa welcomed these most-highly decorated USA heroes as the National Hockey League (NHL), The ... members. , The Medal of Honor, the USA military’s highest award for valor in ...
Breaking Biology News(10 mins):
(Date:12/18/2019)... , ... December 17, 2019 , ... ... its 31st FDA clearance for reprocessing Electrophysiology (EP) devices since the company’s inception ... Stryker Sustainability Solutions and SterilMed (a Johnson & Johnson company) have received 2 ...
(Date:12/18/2019)... ... 18, 2019 , ... Tune in to CNBC on Saturday, December 28th at ... listings for more information on this program. , With a look at Avatar ... complex system to increase the efficiency, safety and effectiveness of equipment, systems, and processes ...
(Date:12/6/2019)... ... December 06, 2019 , ... ... clearance for its latest CAPERE® Thrombectomy System for peripheral vascular, deep vein ... great benefits for first-in-line treatment for nonsurgical removal of soft emboli and ...
(Date:12/4/2019)... ... December 03, 2019 , ... ... today announced a partnership with the Recombinant Antibody Network (RAN), a consortium of ... San Francisco (UCSF) with a common goal to generate recombinant antibodies at a ...
Breaking Biology Technology:
Cached News: