Name: Beluga Calves Relative Summer Density in the St. Lawrence Estuary

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Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>#F</SPAN><SPAN>rançais</SPAN><SPAN /></P><P><SPAN>Cette couche </SPAN><SPAN>re</SPAN><SPAN>présentent la densité relative des veaux de bélugas dans l’estuaire du Saint-Laurent en été basée sur 35 inventaires aériens effectués de 1990 à 2009. La délimitation des zones se fait en intégrant les densités les plus élevées jusqu’à regrouper la proportion de la population voulue par la méthode des kernels (estimation par noyau), afin d’obtenir une distribution de densité lisse et continue.</SPAN></P><P><SPAN>Au sein du de Pêches et Océans Canada (MPO), l’approche écosystémique est envisagée comme un outil pour la planification des opérations, la réalisation des projets et la préparation d’avis. En réponse à cette orientation stratégique, le secteur des sciences du MPO s’est engagé à implanter l’approche écosystémique dans ses activités sous la forme d’initiatives de recherche écosystémique (IRÉ) dans chacune des six régions administratives du MPO. Dans la région du Québec, deux projets pilotes ont été mis en place, dont l’un vise à définir et caractériser l’habitat du béluga du Saint-Laurent, Delphinapterus leucas.</SPAN></P><P><SPAN>#English</SPAN></P><P><SPAN>This </SPAN><SPAN>layer represents</SPAN><SPAN>the relative summer density of beluga calves in the St. Lawrence Estuary based on 35 aerial surveys carried out from 1990 to 2009. The boundaries of the areas were determined by combining the highest densities until the desired proportion of the population was obtained using kernel density estimation in order to obtain a smooth and continuous density distribution</SPAN><SPAN>.</SPAN></P><P><SPAN>Within Fisheries and Oceans Canada (DFO), the ecosystem approach is considered as a tool for operational planning, project implementation and preparation of advisory reports. In response to this strategic direction, the </SPAN><SPAN>DFO </SPAN><SPAN>science division is committed to implement the ecosystem approach in its activities as Ecosystem Research Initiatives (ERI) in each of the six administrative regions of DFO. In the Quebec region, two pilot projects were </SPAN><SPAN>implemented</SPAN><SPAN>, one </SPAN><SPAN>which </SPAN><SPAN>aim to define and characterize the habitat of the St. Lawrence beluga (Delphinapterus leucas).</SPAN></P></DIV></DIV></DIV>

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Copyright Text: Source des données / Data Source : Mosnier, A., R. Larocque, M. Lebeuf, J.-F. Gosselin, S. Dubé, V. Lapointe, V. Lesage, V., H. Bourdages, D. Lefaivre, S. Senneville and C. Chion. 2016. Définition et caractérisation de l'habitat du béluga (Delphinapterus leucas) de l'estuaire du Saint-Laurent selon une approche écosystémique. Secr. can. de consult. sci. du MPO. Doc. de rech. 2016/052. vi + 93 p. Référence / Reference: DFO. 2016. Ecosystem Research Initiative (ERI): Integrated Advice on the Summer Habitat of the St. Lawrence Estuary Beluga (Delphinapterus leucas). DFO Can. Sci. Advis. Sec. Sci. Advis. Rep. 2016/030.

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