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D.V. Chip Weseloh Canadian Wildlife Service - Ontario

www.ec.gc.ca. Contaminant Levels in Herring Gull eggs from the Great Lakes and New York Harbor (Swinburne Island), 2009. D.V. Chip Weseloh Canadian Wildlife Service - Ontario. Susan B. Elbin New York City Audubon. David J. Moore Canadian Wildlife Service - Ontario.

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D.V. Chip Weseloh Canadian Wildlife Service - Ontario

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  1. www.ec.gc.ca Contaminant Levels in Herring Gull eggs from the Great Lakes and New York Harbor (Swinburne Island), 2009 D.V. Chip Weseloh Canadian Wildlife Service - Ontario Susan B. Elbin New York City Audubon David J. Moore Canadian Wildlife Service - Ontario Harbor Herons and Waterbirds of Greater NY/NJ Harbor Working Group 12-13 January 2011 Staten Island, NY

  2. Objective To compare and rank contaminant concentrations in Herring Gull eggs from Swinburne Island, NYC Harbour, with those from 14 well-distributed sites in the Great Lakes for 2009.

  3. 1. Granite I. 2. Agawa Rks. 3. Big Sister I. 4. Gull I. 5. Channel-Shelter I. 6. Double I. 7. Chantry I. 1,200 km Annually Monitored Colonies 1 Lake Superior 2 6 4 8. Fighting I. 9. Middle I. 10. Port Colborne 11. Niagara R. 12. Hamilton Hrbr. 13. Toronto Hrbr. 14. Snake I. 15. Strachan I. LakeHuron 15 3 14 7 Lake Ontario 13 5 12 11 Lake Michigan 10 Lake Erie 8 N N 9

  4. Waterbird Colonies in New York Harbor

  5. Egg collections 13 eggs (1 per complete clutch) from each site are collected in late April/early May. At Swinburne I., they were Collected in late May.

  6. 9 8 7 6 Gull (LM) Snake (LO) Middle (LE) Agawa (LS) Double (LH) Granite (LS) Chantry (LH) Unnamed (NR) Big Sister (LM) Strachan (SLR) Swinburn (NYH) Toronto Hrbr (LO) Hamilton Hrbr (LO) Port. Colborne (LE) Channel-Shelter (LH) 78 77 76 75 Gull (LM) Middle (LE) Snake (LO) Agawa (LS) Double (LH) Granite (LS) Chantry (LH) Unnamed (NR) Big Sister (LM) Strachan (SLR) Swinburn (NYH) Toronto Hrbr (LO) Hamilton Hrbr (LO) Port. Colborne (LE) Channel-Shelter (LH) Egg Composition – Swinburne vs Great Lakes % Lipid % Moisture

  7. 800 12 600 8 400 4 200 0 0 Gull (LM) Snake (LO) Agawa (LS) Middle (LE) Double (LH) Granite (LS) Chantry (LH) Gull (LM) Unnamed (NR) Big Sister (LM) Strachan (SLR) Swinburn (NYH) Snake (LO) Agawa (LS) Middle (LE) Double (LH) Granite (LS) Chantry (LH) Toronto Hrbr (LO) Hamilton Hrbr (LO) Port. Colborne (LE) Unnamed (NR) Big Sister (LM) Strachan (SLR) Swinburn (NYH) Channel-Shelter (LH) Toronto Hrbr (LO) Hamilton Hrbr (LO) Port. Colborne (LE) Channel-Shelter (LH) 0.015 20 0.010 15 10 0.005 5 0 0 Gull (LM) Middle (LE) Agawa (LS) Snake (LO) Double (LH) Granite (LS) Chantry (LH) Big Sister (LM) Unnamed (NR) Strachan (SLR) Swinburn (NYH) Toronto Hrbr (LO) Port. Colborne (LE) Hamilton Hrbr (LO) Gull (LM) Channel-Shelter (LH) Snake (LO) Middle (LE) Agawa (LS) Double (LH) Granite (LS) Chantry (LH) Unnamed (NR) Big Sister (LM) Strachan (SLR) Swinburn (NYH) Toronto Hrbr (LO) Hamilton Hrbr (LO) Port. Colborne (LE) Channel-Shelter (LH) Eggs from Swinburne I. were among the 7 most contaminated for these compounds sum BDEs TCBs ng/g, wet weight (ppb) ng/g, wet weight (ppb) TCDD TCPM ρg/g, wet weight (ppt) µg/g, wet weight (ppm) nd nd nd Site

  8. Eggs from Swinburne I. were the most contaminated for Dieldrin, a banned pesticide 0.15 Dieldrin 0.10 µg/g, wet weight (ppm) 0.05 nd nd nd nd 0 Gull (LM) Snake (LO) Middle (LE) Agawa (LS) Double (LH) Granite (LS) Chantry (LH) Unnamed (NR) Big Sister (LM) Strachan (SLR) Swinburn (NYH) Toronto Hrbr (LO) Hamilton Hrbr (LO) Port. Colborne (LE) Channel-Shelter (LH) Site

  9. 30 1.2 20 0.8 10 0.4 0 0 Gull (LM) Snake (LO) Middle (LE) Agawa (LS) Double (LH) Granite (LS) Chantry (LH) Gull (LM) Big Sister (LM) Unnamed (NR) Strachan (SLR) Snake (LO) Middle (LE) Agawa (LS) Swinburn (NYH) Double (LH) Granite (LS) Chantry (LH) Toronto Hrbr (LO) Hamilton Hrbr (LO) Unnamed (NR) Port. Colborne (LE) Big Sister (LM) Strachan (SLR) Swinburn (NYH) Channel-Shelter (LH) Toronto Hrbr (LO) Hamilton Hrbr (LO) Port. Colborne (LE) Channel-Shelter (LH) 1.6 20 1.2 15 0.8 10 0.4 5 0 0 Gull (LM) Middle (LE) Snake (LO) Agawa (LS) Double (LH) Granite (LS) Chantry (LH) Big Sister (LM) Unnamed (NR) Strachan (SLR) Swinburn (NYH) Toronto Hrbr (LO) Hamilton Hrbr (LO) Port. Colborne (LE) Gull (LM) Channel-Shelter (LH) Snake (LO) Middle (LE) Agawa (LS) Double (LH) Granite (LS) Chantry (LH) Unnamed (NR) Big Sister (LM) Strachan (SLR) Swinburn (NYH) Toronto Hrbr (LO) Hamilton Hrbr (LO) Port. Colborne (LE) Channel-Shelter (LH) Eggs from Swinburne I. were among the 4 least contaminated for these compounds HE DDE µg/g, wet weight (ppm) ng/g, wet weight (ppb) sum OCs sum PCBs µg/g, wet weight (ppm) µg/g, wet weight (ppm) Site

  10. 1.2 0.20 0.16 0.8 0.12 0.08 0.4 0.04 0 0 Gull (LM) Gull (LM) Middle (LE) Snake (LO) Agawa (LS) Double (LH) Snake (LO) Agawa (LS) Middle (LE) Granite (LS) Chantry (LH) Double (LH) Granite (LS) Chantry (LH) Big Sister (LM) Unnamed (NR) Strachan (SLR) Unnamed (NR) Big Sister (LM) Swinburn (NYH) Strachan (SLR) Swinburn (NYH) Toronto Hrbr (LO) Port. Colborne (LE) Toronto Hrbr (LO) Hamilton Hrbr (LO) Hamilton Hrbr (LO) Port. Colborne (LE) Channel-Shelter (LH) Channel-Shelter (LH) 5,000 4,000 3,000 2,000 1,000 0 Gull (LM) Snake (LO) Middle (LE) Agawa (LS) Double (LH) Granite (LS) Chantry (LH) Unnamed (NR) Big Sister (LM) Strachan (SLR) Swinburn (NYH) Toronto Hrbr (LO) Hamilton Hrbr (LO) Port. Colborne (LE) Channel-Shelter (LH) Eggs from Swinburne I. were the least contaminated for these compounds Mirex Hg µg/g, wet weight (ppm) µg/g, wet weight (ppm) non-ortho PCBs ρg/g, wet weight (ppt) Site

  11. 30 20 10 0 Gull (LM) Snake (LO) Middle (LE) Agawa (LS) Double (LH) Granite (LS) Chantry (LH) Unnamed (NR) Big Sister (LM) Strachan (SLR) Swinburn (NYH) Toronto Hrbr (LO) Hamilton Hrbr (LO) Port. Colborne (LE) 4 Channel-Shelter (LH) 3 2 1 0 Gull (LM) Middle (LE) Snake (LO) Agawa (LS) Double (LH) Granite (LS) Chantry (LH) Unnamed (NR) Big Sister (LM) Strachan (SLR) Swinburn (NYH) Toronto Hrbr (LO) Hamilton Hrbr (LO) Port. Colborne (LE) Channel-Shelter (LH) Eggs from Swinburn I. were the least contaminated for these compounds HCB ng/g, wet weight (ppb) Penta CB Site ng/g, wet weight (ppb) Site

  12. Overall Contamination • Where do eggs from Swinburn Island rank overall against eggs from the 14 Great Lakes Sites ? • Can that be determined ? If so, how ?

  13. Fish flesh criteria for various organochlorine compounds for protection of piscivorous wildlife (Newell et al., 1987) Fish/food should not contain concentrations greater than these for safe consumption http://www.dec.ny.gov/docs/wildlife_pdf/niagarabiotacontamproj.pdf

  14. 16 16 12 12 Mean Weighted Rank 8 8 4 4 0 0 Gull Snake Middle Double Granite Agawa Chantry Strachan Swinburn Big Sister Unnamed Toronto Hrbr Port Colborne Hamilton Hrbr Channel-Shelter Colony Overall contamination (mean weighted rank) among sites rank = 1  most contaminated

  15. www.ec.gc.ca

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