Journal
MARINE POLLUTION BULLETIN
Volume 50, Issue 6, Pages 668-681Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2005.02.025
Keywords
Irgarol 1051; antifouling paint; Chesapeake Bay; Carolinian Province; marinas; phytoplankton
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The objectives of this study were to measure: (1) Irgarol and GS26575 (major metabolite) during the peak 2004 boating season at selected marinas and reference areas in the Carolinian Zoogeographic Province of the Eastern United States, (2) Irgarol and GS26575 at selected stations during the summer months in the Back Creck/Severn River area lit Maryland in 2003 and 2004; and (3) structural and functional characteristics of resident phytoplankton communities concurrently with Irgarol and GS26575 monitoring in Back Creek/Severn River area. Irgarol concentrations from 14 marinas in the Carolinian Province ranged from non-detectable (< 1 ng/L) to 85 ng/L; concentrations were less than 10 ng/L at all reference sites, The probability of exceeding the plant 10th centile for Irgarol (251 ng/L) was less than 0.6 % for all marinas and for all reference areas. These data suggest low ecological risk from Irgarol exposure for both marina and reference areas in the Carolinian Province. Irgarol concentrations ranged from 5 ng/L at the Severn River reference site to 1.816 ng/L in Port Annapolis marina during the two War Study. Ecological risk from Irgarol exposure was high for the Port Annapolis marina sites based (in a probability of exceeding the plant 10th centile. However, risk was low for Severn River and Severn River reference sites. Functional and structural measures of resident phytoplankton communities in the Back Creek and Severn River did not suggest that these target species are impaired in the Port Annapolis marina area where probabilistic analysis predicted adverse effects from Irgarol exposure. (c) 2005 Elsevier Ltd. All rights reserved.
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