{ "culture": "en-CA", "name": "Dinoflagellate_Communities_Ports", "guid": "46B8E659-7E50-4FEF-8211-F9B2DD54124F", "catalogPath": "", "snippet": "The data were collected during two research projects:\nDevelopment of community-based monitoring for aquatic invasive species in the Canadian Arctic - preparing...", "description": "
Description<\/SPAN><\/P> The data were collected during two research projects:<\/SPAN><\/P> Development of community-based monitoring for aquatic invasive species in the Canadian Arctic - preparing for increased shipping related to resource development and climate change;<\/SPAN><\/P> Diversity of pelagic primary producers in coastal habitats and the potential for harmful blooms in Eastern Canadian Arctic, with a focus near Iqaluit, Nunavut.<\/SPAN><\/P> 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.<\/SPAN><\/P> SAMPLING<\/SPAN><\/P> 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.<\/SPAN><\/P> PREPARATION : Samples were stored in 4% formaldehyde. Sample preparation and counting were performed using the Utermöhl method.<\/SPAN><\/P> OBSERVATION : Samples were observed using an inverted microscope (NIKON Eclipse TE-2000-U) under a magnification of 200x.<\/SPAN><\/P> 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<\/SPAN><\/P> ENVIRONMENTAL VARIABLES<\/SPAN><\/P> 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.<\/SPAN><\/P> 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<\/SPAN><\/P>