EPA Science Inventory

AN APPROACH TO PREDICT RISKS TO WILDLIFE POPULATIONS FROM MERCURY AND OTHER STRESSORS

Citation:

Nacci, D E., M Pelletier, J L. Lake, R S. Bennett, J W. Nichols, R Haebler, J Grear, A Kuhn, M. C. Nicholson, AND W R. Munns Jr. AN APPROACH TO PREDICT RISKS TO WILDLIFE POPULATIONS FROM MERCURY AND OTHER STRESSORS. Ecotoxicology. Springer Science+Business Media, 14(1-2):283-293, (2005).

Description:

The U.S. Environmental Protection Agency's National Health and Environmental Effects Research Laboratory (NHEERL) is developing tools for predicting risks of multiple stressors to wildlife populations, which support the development of risk-based protective criteria. NHEERL's research focuses initially on the risks of dietary methylmercury (CH3Hg) and other stressors to populations of aquatic predators (i.e., common loon, Gavia immer). However, these risks of CH3Hg must be linked with information on the fate of mercury within aquatic food webs to improve understanding of environmental effects produced by atmospherically distributed Hg. To support these needs, relevant existing information (collected by a network of environmental protection-conservation partnerships) is being organized, and focused new studies are being conducted to develop models predicting CH3Hg effects on individuals, and on local and regional scale wildlife populations. Specifically, a biologically-based toxicokinetic model is being used to extrapolate CH3Hg effects from a tested bird species to untested species, including the loon. Population modeling approaches are being used to predict stressor effects on loon populations, and to compare regional populations. Finally, habitat and spatially-explicit population models are being used to integrate results, assess the importance of chemical and non-chemical stressors, and demonstrate the effect of scale on the assessment of risks to wildlife populations.

Purpose/Objective:

To predict risks to wildlife from mercury

Record Details:

Record Type: DOCUMENT (JOURNAL/PEER REVIEWED JOURNAL)
Start Date: 03/01/2005
Completion Date: 03/01/2005
Record Last Revised: 09/11/2008
Record Created: 12/08/2004
Record Released: 12/08/2004
OMB Category: Other
Record ID: 104812

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL HEALTH AND ENVIRONMENTAL EFFECTS RESEARCH LAB

ATLANTIC ECOLOGY DIVISION

POPULATION ECOLOGY BRANCH