Marine Birds as Sentinels of Environmental Polluti

Authors: Joanna Burger Michael Gochfeld

Publish Date: 2004/05/28

Volume: 1, Issue: 3, Pages: 263-274

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Abstract

Marine birds are useful as bioindicators of environmental pollution in estuarine and marine environments because they are often at the top of the food chain ubiquitous and many are abundant and common making collecting possible Seabirds have the advantage of being large wideranging conspicuous abundant longlived easily observed and important to people Many species are at the top of the food chain where they bioaccumulate contaminants with age One disadvantage is that many species are migratory making it difficult to determine where exposure occurred This can be eliminated by using sedentary species or young birds that obtain all their food from parents Further noninvasive collection of feathers can be used to assess heavy metal levels both from current collections and from historical collections in museums dating back centuries Marine birds can be used as bioindicators in many ways including tissue levels of contaminants epidemiological field studies of effects and experimental and laboratory studies of dose and effects Examples from our research indicate some of the ways marine birds can be useful as indicators and sentinels of contamination particularly by using young birds and feathersWe acknowledge valuable discussions with many colleagues over the years including K Cooper D CorySlechta BD Goldstein G Fox R Furness M Gilbertson H Hayes J Jehl Jr K King BG Murray I Nisbet C Powers C Safina J Saliva BA Schreiber and J Spendelow We thank C Dixon C Jeitner T Shukla S Shukla and M McMahon for laboratory assistance and R Ramos for graphics Research has been funded by NIMH NIEHS ESO 5022 EPA the Consortium for Risk Evaluation with Stakeholder Participation CRESP through the Department of Energy cooperative agreement AI DEFC0195EW55084 DEFG 26OONT 40938 the New Jersey Department of Environmental Protection Endangered and Nongame Species Program Office of Science and Research Penn Foundation and the Environmental and Occupational Health Sciences Institute

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