10.5443/11645
Connie Lovejoy
Mary Thaler
Eddy C. Carmack
Jean-Éric Tremblay
Joannie Martin
Karen Scarcella
Yves Gratton and associates
Environmental data for an ordination analysis explaining the abundance of MAST-1 sub-clades
Canadian Cryospheric Information Network
2013
Arctic Ocean
Biomass
CTD (Conductivity, Temperature, Depth)
Canada
Chlorophyll
Diatoms
Microorganisms
Nanoflagellates
Nutrients
Protists
ArcticNet Network of Centres of Excellence of Canada
International Polar Year-Canada's 3 Oceans
International Polar Year-The Circumpolar Flaw Lead System Study
Canadian Polar Data Network (CPDN)
IPY
2007-07-07/2008-09-22
en
11645
Public
The datasets present new data from microscopic counts and selected nutrient and physical data assembled from the following missions. Aboard the CCGS Louis St-Laurent: IPY Canada's Three Oceans 2007. Aboard the CCGS Amundsen: International Polar Year (IPY) Circumpolar Flaw Lead Study 2008; ArcticNet 2008. Temporal coverage is July-September. Cell density of the three sub-clades MAST-1A, MAST-1B and MAST-1C was measured by cell-counts using fluorescent in situ hybridization with taxa-specific probe. Biomass of phototrophic organisms, of different size classes, was obtained by counts of DAPI-stained cells under epifluorescence microscopy. Samples for total chlorophyll a (chl a) were filtered onto GF/F filters, extracted in either ethanol or acetone and analysed by spectrofluorometry. Chl a was also measured for the < 3 µm size fraction, and chl a in the < 3 µm size fraction was calculate by simple substraction. CCGS Amundsen data: Temperature, salinity, transmissivity, oxygen, and photosynthetically active radiation were provided by Dr. Y. Gratton (Institut National de la Recherche Scientifique, Québec). Nitrate and Phosphate concentrations were provided by Dr. J.-É. Tremblay (Université Laval, Québec). CCGS Louis St-Laurent data were supplied by Drs. E.C. Carmack and J. Nelson (Institute of Ocean Sciences, Sidney, B.C.). Distance to ice edge was obtained from the Canadian Ice Services (http://ice-glaces.ec.gc.ca).
Purpose: These data were used in an ordination analysis aimed at predicting the occurrence and abundance of three sub-clades of the group of heterotrophic nanoflagellate stramenopiles, MAST-1, in the Canadian Arctic.
Summary: Not Applicable
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-53.6623
54.2543
77.346717
Canadian High Arctic Seas, Labrador Sea