NDLI: Metals in Feathers of Black-Crowned Night-Heron (Nycticorax nycticorax) Chicks from the New York Harbor Estuary

Content Provider	Springer Nature Link
Author	Padula, V. Burger, J. Newman, S. H. Elbin, S. Jeitner, C.
Copyright Year	2009
Abstract	In heavily urbanized landscapes such as the New York Harbor Estuary, the local environment is subject to a variety of contamination sources. Environmental contaminants such as heavy metals and metalloids pose a risk to wildlife inhabiting the harbor. Metal concentrations in feathers indicate exposure and provide insight into the potential adverse effects on birds. In 2004 and 2005 down feathers were collected from 147 black-crowned night heron (Nycticorax nycticorax) chicks living on four island colonies in the New York Harbor Estuary, USA: Goose Island, Hoffman Island, North Brother Island, and Canarsie Pol. We examined geographical and interannual differences in concentrations of the metalloid arsenic (As) and the heavy metals cadmium (Cd), chromium (Cr), lead (Pb), and mercury (Hg). Significant differences in metal concentrations were a function of location, with North Brother Island having the highest As concentrations and Goose Island having the highest Cr and Pb concentrations in feathers collected in 2004. In 2005, feather samples indicated Hoffman Island had the highest Cr concentrations and North Brother Island had the highest Pb and Hg concentrations. Concentrations of As, Cd, and Hg decreased significantly from 2004 to 2005 on North Brother Island, Hg on Hoffman Island decreased from 2004 to 2005, while Cr on Hoffman Island increased from 2004 to 2005. Cd and Pb concentrations were higher and As and Cr concentrations were generally lower than concentrations reported in previous studies. Further investigation is necessary on the declining population of herons in the New York Harbor Estuary to determine specifically if birds are experiencing adverse effects from metal contaminants, or if organic contaminants, such as organic Hg or polychlorinated biphenyls (PCBs), are playing a role in this population’s decline.
Starting Page	157
Ending Page	165
Page Count	9
File Format	PDF
ISSN	00904341
Journal	Archives of Environmental Contamination and Toxicology
Volume Number	59
Issue Number	1
e-ISSN	14320703
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-12-27
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Environmental Monitoring/Analysis Soil Science & Conservation Environmental Chemistry Environmental Health Pollution Ecotoxicology
Content Type	Text
Resource Type	Article
Subject	Pollution Health, Toxicology and Mutagenesis Medicine Toxicology

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