843e77be-2d4a-4e40-a816-51b4273df903 eng; CAN Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca 2022-04-08T12:59:50 North American Profile of ISO 19115:2003 2009-01-01 https://www.polardata.ca/pdcsearch/PDCSearchDOI.jsp?doi_id=1631 Mercury and stable isotopes data in zooplankton across the Canadian High Arctic: Northwater Polynya and Baffin Bay 2016-01-08 Gary Stern Corinne Pomerleau Allison MacHutchon Bruno Rosenberg Gail Boila Joanne DeLaronde Pomerleau, C., Stern, G.A., Foster, K., Pucko, M., Macdonald, R.W., Fortier, L. Pan-Arctic overview of mercury concentrations and stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) in marine mesozooplankton. Science of the Total Environment. (In review). Zooplankton samples were collected onboard the research Icebreaker CCGS Amundsen during Leg 1 in 2005 (4 stations) and Leg 1 in 2006 (8 stations) with a vertically towed net frame equipped with a set of 4 adjacent 1-m2 nets (mesh size 200 µm and 500 µm) from near the bottom to the surface and by trawling an oblique rectangular mid-water trawl (mesh size 1600 µm) or an oblique Tucker net (mesh size 2x500 µm) in the surface layer from 100 m depth to the surface. Samples were placed into 30 ml plastic vials and/or whirl-pak bags and were kept frozen at -20 degree Celsius. Representative sub-samples of individual zooplankton genera were placed in 4 ml glass vials for stable isotope analysis. Three keystone zooplankton genus were included in this study: Calanus spp. (mostly adult Calanus hyperboreus), Themisto spp. (mostly adult Themisto libellula) and Euchaeta spp. THg analysis was conducted at the Freshwater Institute with cold vapour atomic absorption spectroscopy (CVAAS). MMHg analysis was conducted at the University of Ottawa by Gas Chromatography Atomic Fluorescence Spectroscopy (GCAFS). Carbon and nitrogen isotopic analyses were performed at the University of Winnipeg Isotope Laboratory by continuous flow ion ratio mass spectrometry (CF-IRMS). Oceanographic data (Hg levels in water column, salinity, 18O) were collected by our team. Water samples were collected with 24 12-L Niskin bottles attached to a rosette sampler equipped with Seabird 911+ CTD (Sea-Bird Electronics, Inc.). This set of data was collected in an effort to determine total mercury and methylmercury (Thg and MMHg, respectively) levels and stable isotope values in three major marine zooplankton species; herbivorous copepod Calanus spp., carnivorous copepod Euchaeta spp. and hyperiid amphipod Themisto spp. Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca polardata.ca http https://metadata.arice-h2020.eu/geonetwork/srv/api/records/843e77be-2d4a-4e40-a816-51b4273df903/attachments/map.png Baffin Bay Contaminants Mercury North Water Polynya Stable isotope analyses Water chemistry Zooplankton Polar Data Catalogue Thesaurus (Canada) 2021-06-02 Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca polardata.ca http https://www.polardata.ca/pdcinput/public/keywordlibrary Northwater Polynya, Baffin Bay, Canada Terms of Use of the Polar Data Catalogue: https://www.polardata.ca/pdcinput/public/termsofuse eng; CAN environment -70.3 -62.8 67.4 79.6 Time period can be either covered by the content of the dataset or the date when the data has been collected. 2005-08-05 2006-09-27 Summary: Not Applicable Research Program(s): ArcticNet. For further information: Gary.Stern@dfo-mpo.gc.ca false Digital file 1.0 Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca This metadata was generated from the PDC metadata database at 2021-06-02 Polar Data Catalogue Canadian Cryospheric Information Network (519) 888-4567 x32689 200 University Avenue West, University of Waterloo Waterloo Ontario N2L 3G1 Canada pdc@uwaterloo.ca