Dinoflagellate Communities in the Ports of Churchill (MB), Deception Bay (QC), Iqaluit (NU) and Milne Inlet (NU)

Dinoflagellate Communities in the Ports of Churchill (MB), Deception Bay (QC), Iqaluit (NU) and Milne Inlet (NU) The data were collected during two research projects: Development of community-based monitoring for aquatic invasive species in the Canadian Arctic - preparing for increased shipping related to resource development and climate change; Diversity of pelagic primary producers in coastal habitats and the potential for harmful blooms in Eastern Canadian Arctic, with a focus near Iqaluit, Nunavut. Funding was provided by Polar Knowledge Canada, Fisheries and Oceans Canada (Strategic Program for Ecosystem-based Research and Advice, Aquatic Invasive Species Program and Oceans Ocean Protection Plan) and the Nunavik Marine Region Wildlife Board. These data are the abundance, richness and diversity of dinoflagellate communities in Canadian Arctic seaports to provide baseline data and to verify the presence of potential non-indigenous species and harmful taxa. These data can be used as a reference source for monitoring the introduction of potentially non-native species introduced into Arctic ports where shipping activities are high. SAMPLING Dinoflagellate samples were collected using a 20 μm (30 cm diameter) Nitex® plankton net during August in Churchill (MB) (2007 and 2015), in Deception Bay (QC ) (2016), in Iqaluit (NU) (2015 and 2019) and in Milne Inlet (2017). Samples were collected from 1 m of the surface to 1 m above the bottom. PREPARATION : Samples were stored in 4% formaldehyde. Sample preparation and counting were performed using the Utermöhl method. OBSERVATION : Samples were observed using an inverted microscope (NIKON Eclipse TE-2000-U) under a magnification of 200x. ABUNDANCE : The calculation of the abundance of dinoflagellates (cell / liter) was carried out as follows: Number of cells X Volume of the bottle / Volume of the Utermöhl chamber / (pi X Radius^2 X Depth) X 1000 ENVIRONMENTAL VARIABLES Environmental data were measured using a CTD and a Secchi disk. The time between sea ice melt and sampling was calculated by subtracting the sampling day from the breakup dates (ice concentration <1/10) which were extracted from the Canadian Ice Service records. For further information, please consult the following paper: Dhifallah F, Rochon A, Simard N, McKindsey CW, Gosselin M, Howland KL. 2022. Dinoflagellate communities in high-risk Canadian Arctic ports. Estuarine, Coastal and Shelf Science 266:107731 2023-07-11 Fisheries and Oceans Canada kimberly.howland@dfo-mpo.gc.ca Nature and EnvironmentBallast waterHarmful algaeDinoflagellatesPlanktonPhytoplanktonInvasive SpeciesOceansSea Surface TemperatureSalinityArcticInvasive speciesOceanographyMarine biologyArctic Ocean Dinoflagellate communities in high-risk Canadian Arctic ports. Estuarine, Coastal and Shelf SciencePDF https://doi.org/10.1016/j.ecss.2021.107731 Dinoflagellate Communities in the Ports of Churchill (MB), Deception Bay (QC), Iqaluit (NU) and Milne Inlet (NU)ESRI REST https://gisp.dfo-mpo.gc.ca/arcgis/rest/services/FGP/Dinoflagellate_Communities_Ports/MapServer/0 Dinoflagellate Communities in the Ports of Churchill (MB), Deception Bay (QC), Iqaluit (NU) and Milne Inlet (NU)ESRI REST https://gisp.dfo-mpo.gc.ca/arcgis/rest/services/FGP/Dinoflagellate_Communities_Ports/MapServer/0 Data DictionaryCSV https://pacgis01.dfo-mpo.gc.ca/FGPPublic/Dinoflagellate_Comunities_Ports/Data Dictionnary_Dictionnaire_de_donnees.csv Data DictionaryPDF https://pacgis01.dfo-mpo.gc.ca/FGPPublic/Dinoflagellate_Comunities_Ports/Data_Dictionnary_Dictionnaire_de_donnees.pdf Bilingual DataCSV https://pacgis01.dfo-mpo.gc.ca/FGPPublic/Dinoflagellate_Comunities_Ports/Data Bilingual format.zip Data (Darwin Core)CSV https://pacgis01.dfo-mpo.gc.ca/FGPPublic/Dinoflagellate_Comunities_Ports/Data_Darwin_Core_format.zip

The data were collected during two research projects:

Development of community-based monitoring for aquatic invasive species in the Canadian Arctic - preparing for increased shipping related to resource development and climate change;

Diversity of pelagic primary producers in coastal habitats and the potential for harmful blooms in Eastern Canadian Arctic, with a focus near Iqaluit, Nunavut.

Funding was provided by Polar Knowledge Canada, Fisheries and Oceans Canada (Strategic Program for Ecosystem-based Research and Advice, Aquatic Invasive Species Program and Oceans Ocean Protection Plan) and the Nunavik Marine Region Wildlife Board.

These data are the abundance, richness and diversity of dinoflagellate communities in Canadian Arctic seaports to provide baseline data and to verify the presence of potential non-indigenous species and harmful taxa. These data can be used as a reference source for monitoring the introduction of potentially non-native species introduced into Arctic ports where shipping activities are high.

SAMPLING

Dinoflagellate samples were collected using a 20 μm (30 cm diameter) Nitex® plankton net during August in Churchill (MB) (2007 and 2015), in Deception Bay (QC ) (2016), in Iqaluit (NU) (2015 and 2019) and in Milne Inlet (2017). Samples were collected from 1 m of the surface to 1 m above the bottom.

PREPARATION : Samples were stored in 4% formaldehyde. Sample preparation and counting were performed using the Utermöhl method.

OBSERVATION : Samples were observed using an inverted microscope (NIKON Eclipse TE-2000-U) under a magnification of 200x.

ABUNDANCE : The calculation of the abundance of dinoflagellates (cell / liter) was carried out as follows: Number of cells X Volume of the bottle / Volume of the Utermöhl chamber / (pi X Radius^2 X Depth) X 1000

ENVIRONMENTAL VARIABLES

Environmental data were measured using a CTD and a Secchi disk. The time between sea ice melt and sampling was calculated by subtracting the sampling day from the breakup dates (ice concentration <1/10) which were extracted from the Canadian Ice Service records.

For further information, please consult the following paper: Dhifallah F, Rochon A, Simard N, McKindsey CW, Gosselin M, Howland KL. 2022. Dinoflagellate communities in high-risk Canadian Arctic ports. Estuarine, Coastal and Shelf Science 266:107731

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Contact Information

Delivery Point: 501 University Cres

City: Winnipeg

Administrative Area: Manitoba

Postal Code: R3T 2N6

Country: Canada

Electronic Mail Address: kimberly.howland@dfo-mpo.gc.ca

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