018c97e9-6c37-4558-b471-556d332af303 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 2022-04-08T12:59:42 North American Profile of ISO 19115:2003 2009-01-01 https://www.polardata.ca/pdcsearch/PDCSearchDOI.jsp?doi_id=1621 Zooplankton and Algae Mercury Data in Amundsen Gulf, 2008 2015-01-09 Gary Stern Alexis Burt Allison MacHutchon Debbie Armstrong Feiyue Wang Gail Boila Joanne DeLaronde (1) Burt et al. 2013. Mercury update within an ice algae community during the spring bloom in the first-year Arctic sea ice. Journal of Geophysical Research-Oceans 118: 4746-4754. (2) Pućko et al. 2014. Transformation of mercury at the bottom of the Arctic food web: an overlooked puzzle in the mercury toxicity narrative. Environmental Science & Technology. 48(13):7280-8. Sampling took place on legs 6, 7, 8b, and 9 of the CFL project on the CCGS Amundsen (2008). Zooplankton were sampled with a 1x1m2 (200 µm mesh) net through the moon-pool and with a 1m diameter (200 µm mesh) ring net on the ice at ice covered stations. In open water, samples were collected with 2x1 sq.m (500 µm mesh), 4x1 sq.m (500 and 200 µm mesh), and rectangular mid-water trawl (1600 µm mesh). Samples were live sorted to species and frozen at -25C. Algae were collected from the bottom ice via ice cores and the dive program, from the ice interface/surface water with a Hg clean Niskin and a hose and pump on a 1m arm, and from the chlorophyll a maximum depth via the rosette. Samples in ice were frozen in the dark, while samples in water were filtered via dual filtration following Morrison and Watras (1999) and filters were frozen at -25C. Zooplankton species Calanus glacialis and Calanus hyperboreus were analyzed for total mercury using CVAAS; C. hyperboreus was also analyzed for methyl mercury via Gas Chromatography Atomic Fluorescence Spectrophotometry (GC AFS). The algae samples were analyzed for THg using cold vapour atomic absorption spectrometry (CVAAS) and MeHg using cold vapour atomic fluorescence spectroscopy (CVAFS). The data is intended to show the levels of total and methyl mercury, as well as food web structure of the zooplankton and algae populations in the Amundsen Gulf during 2008 winter to summer seasons. This time frame coincides with Arctic sun rise and mercury depletion events, as well as spring melt. It will be correlated to inputs of mercury (Hg) from the atmosphere, ice, and water column at the same time. 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/018c97e9-6c37-4558-b471-556d332af303/attachments/map.png Amundsen Gulf Arctic Biogeochemistry Contaminants Diatoms Mercury Mercury depletion events Methylmercury Phytoplankton 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 Beaufort Sea (CGNDB ID - LACKU), Northwest Territories, Canada Terms of Use of the Polar Data Catalogue: https://www.polardata.ca/pdcinput/public/termsofuse eng; CAN environment -133.9 -114.6 69.1 75.6 Time period can be either covered by the content of the dataset or the date when the data has been collected. 2008-01-31 2008-07-13 Summary: Not Applicable Research Program(s): ArcticNet,IPY. 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