Name: Megahabitats / Mégahabitats

Display Field: ET_Index

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Description: Available information for the Estuary and Gulf of St. Lawrence on salinity, temperature, dissolved oxygen, depth, slope, and variability in landscape and sediments,were aggregated using a grid made up of 100 km2 cells as a basis for mapping and describing marine habitats for conservation and integrated management purposes.For example, 26 variableswere selected to describe depth, slope, salinity and temperature. Based on that information, cluster analyses were conducted grouping cells into 13 different megahabitats. Four megahabitats described the deep waters, and areas outside channels formed 9 megahabitats: four in the southern Gulf and five in the northern Gulf.#Fra Les données disponiblespour l'estuaire et le golfe du Saint-Laurent sur la salinité, la température, l’oxygène dissous, la profondeur, la pente et la variabilité du relief de même que sur les sédiments, ont été agrégées en utilisant une grille avec une résolution de 100 km²à des fins d’identification et de description des habitats devant faire l’objet d’un plan de conservation ou de gestion intégrée.Par exemple, 26 variables ont été sélectionnées pour décrire la profondeur, la pente, la salinité et la température des fonds marins. Des analyses de groupement de ces données ont identifié 13 habitats différents. Quatre de ces habitats sont associés aux chenaux profonds et neuf au haut des talus et aux plateaux avoisinants, soit quatre dans le sud et cinq dans le nord du golfe du Saint-Laurent.

Service Item Id: e03d51e11e4a460c80cbc66b779b00e3

Copyright Text: Dutil, J.-D., Proulx, S., Chouinard, P.-M., and Borcard. D. 2011. A hierarchical classification of the seabed based on physiographic and oceanographic features in the St. Lawrence. Can. Tech. Rep. Fish. Aquat. Sci. 2916: vii + 72 p. http://www.dfo-mpo.gc.ca/Library/342703.pdf

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