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BARA hopes the scientific talents of the local Marine Biologists from federal Department of Fisheries and Oceans (DFO), the Bedford Institute of Oceanography (BIO), local universities and Community College combine with the recreational and professional sport history of our lakes as the birthplace of Hockey, Starr Skates, and an active world class canoe, kayak and paddling race course, for the basis of modeling to all other North American boreal urban watersheds that seek to restore pre-industrial sustainable phosphate load modelling to their water courses.  Of the 9 lakes monitored, BARA has partnered with and thanks Crombie REIT, HRM District #5, Gloria McCluskey, and Nova Scotia Sport Fisheries for funding to install a self-contained solar powered Aerator to improve fish habitat by reducing seasonal anoxia in the 4 hectare Lake Penhorn, by lowering the hypolimnion to near lake bottom, and supporting decomposition of lake bottom organics.","fr":"Le bassin versant de 4 000 acres de Dartmouth et de la rivière Sawmill fait partie du seul bassin hydrographique boréal urbain d'Amérique du Nord comptant une population de plus de 400 000 habitants (municipalité régionale d'Halifax) où les lacs du centre-ville ne se sont pas eutrophiés et conservent leur fond oxique en moyenne 10 mois par an, jusqu'à des températures allant de 21 à 23 degrés Celsius. La BARA considère que cette capacité naturelle de nos lacs à fond argileux à adsorber le phosphore mérite d'être préservée dans un paysage résidentiel, commercial et industriel densifié en milieu urbain. La surveillance de base constituant cet ensemble de données vise à créer une imagerie graphique de la corrélation entre l'anoxie saisonnière et la spécificité/conductance afin de déduire le taux des niveaux de charge interne lorsque le fer et le manganèse expulsent les phosphates des sols glaciaires du fond des lacs dans la colonne d'eau, et d'estimer un indice prédictif des températures de l'eau corrélé aux niveaux d'anoxie saisonniers pour les lacs surveillés. L'évolution récente des quarante dernières années indique que la teneur totale en phosphore est comprise entre 8 et 15 mg/L. La BARA espère que les talents scientifiques des biologistes marins locaux du ministère fédéral des Pêches et des Océans (MPO), de l'Institut océanographique de Bedford (BIO), des universités locales et du Community College se combineront à l'histoire du sport récréatif et professionnel de nos lacs, berceau du hockey, Starr Skates et d'un parcours de course actif de canot, de kayak et de pagayage de classe mondiale, afin de s'inspirer de tous les autres bassins hydrographiques urbains boréaux d'Amérique du Nord qui cherchent à rétablir la modélisation préindustrielle durable de la charge de phosphate dans leurs cours d'eau. 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BARA sees this native capacity of our glacial till clay bottomed lakes to adsorb phosphorous as worth preserving within an urban core densified mixed residential, commercial and industrial landscape. The baseline monitoring forming this Dataset is intended to create graphic imaging of the correlation of the seasonal anoxia and specific/conductance to infer rate of internal loading levels as the iron and manganese flush phosphates from the glacial till lake bottom soils into the water column, and estimate a predictive index of water temperatures correlated to seasonal anoxia levels for lakes monitored. Recent history over the past four decades is 8 to 15 mg/L total phosphorous. BARA hopes the scientific talents of the local Marine Biologists from federal Department of Fisheries and Oceans (DFO), the Bedford Institute of Oceanography (BIO), local universities and Community College combine with the recreational and professional sport history of our lakes as the birthplace of Hockey, Starr Skates, and an active world class canoe, kayak and paddling race course, for the basis of modeling to all other North American boreal urban watersheds that seek to restore pre-industrial sustainable phosphate load modelling to their water courses.  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