Abstract:
:Colonially nesting aquatic birds can indicate site-specific contamination because they are high-level predators and dependent upon local resources during the breeding season. We compared persistent organochlorine concentrations in black-crowned night heron (Nvcticorax nvcticorax) eggs collected in 1992-93 among areas of known contamination (New York Harbor, Boston Harbor, Cape Cod, and Delaware Bay) and a reference site (Nantucket Island) in the northeastern United States (7-16 eggs/site). Total PCBs, p,p'-DDE, oxychlordane, heptachlor epoxide, and trans-nonachlor were detected in most eggs and were significantly higher in New York Harbor compared to all other sites (ANOVA on factor scores from the first principal component, which accounted for 75% of data variance, p < 0.0001). New York also had the highest contamination index (the number of Superfund sites within 20 km of the colony) among the sites. Nantucket, the reference site, had consistently low contamination in eggs, and the lowest contamination index. We conclude that black-crowned night heron eggs are useful indicators of site-specific persistent organochlorine contamination, as indexed by the number of nearby Superfund sites.
journal_name
Arch Environ Contam Toxicoljournal_title
Archives of environmental contamination and toxicologyauthors
Matz AC,Parsons KCdoi
10.1007/s00244-003-2265-9subject
Has Abstractpub_date
2004-02-01 00:00:00pages
270-4issue
2eissn
0090-4341issn
1432-0703journal_volume
46pub_type
杂志文章abstract::Recent regulations require that the ecological effects of microorganisms introduced into the environment, such as for groundwater bioremediation, be assessed prior to their utilization. A native anuran (Rana clamitans) and a model anuran (Xenopus laevis) were used as potential wetland receptors of tetrachloroethylene ...
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journal_title:Archives of environmental contamination and toxicology
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