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In 2021, for the first time in two decades, the population of the city of Montreal, located in the Canadian province of Quebec, had declined. The city had indeed lost slightly more than 25,000 inhabitants between 2020 and 2021, dropping from approximately 4.37 million to 4.34 million. In 2022, Montreal was the second most populous city in the country, behind Toronto, which had approximately 6.7 million inhabitants.
Footnotes: 1 Population estimates based on the Standard Geographical Classification (SGC) 2011 as delineated in the 2011 Census. 2 A census metropolitan area (CMA) is formed by one or more adjacent municipalities centred on a population centre (known as the core). A CMA must have a total population of at least 100,000 of which 50,000 or more must live in the core. To be included in the CMA, other adjacent municipalities must have a high degree of integration with the core, as measured by commuting flows derived from previous census place of work data. Once an area becomes a CMA, it is retained as a CMA even if its total population declines below 100,000 or the population of its core falls below 50,000. Small population centres with a population count of less than 10,000 are called fringe. All areas inside the CMA that are not population centres are rural areas. All CMAs are subdivided into census tracts. 3 Postcensal estimates are based on the latest census counts adjusted for census net undercoverage (including adjustment for incompletely enumerated Indian reserves) and for the estimated population growth that occurred since that census. Intercensal estimates are based on postcensal estimates and census counts adjusted of the censuses preceding and following the considered year. 4 Preliminary postcensal population estimates for census metropolitan areas (CMAs) in Quebec and British Columbia were prepared by l'Institut de la statistique du Québec" (ISQ) and BC Stats Ministry of Labour and Citizens' Services respectively. Estimates for Quebec were based on statistics derived from the registration file for insured people of the "Régie de l'assurance-maladie". Estimates for British Columbia were produced using a regression model based upon changes in residential electrical (hydro) connections and Ministry of Health Client Registry counts. These estimates were controlled to Statistics Canada provincial estimates. Please note that for these two specific cases the component method is not applicable."5 Population estimates for July 1 are final intercensal from 2001 to 2010, final postcensal for 2011 to 2013, updated postcensal for 2014 to 2016 and preliminary postcensal for 2017. 6 The population growth, which is used to calculate population estimates of Census metropolitan areas (CANSIM 051-0056), is comprised of the components of population growth (CANSIM 051-0057). 7 This table replaces CANSIM table 051-0046. 8 Please refer to table 17100135 for more recent data. 9 Age at July 1.
Footnotes: 1 Population estimates based on the Standard Geographical Classification (SGC) 2011 as delineated in the 2011 Census. 2 A census metropolitan area (CMA) is formed by one or more adjacent municipalities centred on a population centre (known as the core). A CMA must have a total population of at least 100,000 of which 50,000 or more must live in the core. To be included in the CMA, other adjacent municipalities must have a high degree of integration with the core, as measured by commuting flows derived from previous census place of work data. Once an area becomes a CMA, it is retained as a CMA even if its total population declines below 100,000 or the population of its core falls below 50,000. Small population centres with a population count of less than 10,000 are called fringe. All areas inside the CMA that are not population centres are rural areas. All CMAs are subdivided into census tracts. 3 Postcensal estimates are based on the latest census counts adjusted for census net undercoverage (including adjustment for incompletely enumerated Indian reserves) and for the estimated population growth that occurred since that census. Intercensal estimates are based on postcensal estimates and census counts adjusted of the censuses preceding and following the considered year. 4 Preliminary postcensal population estimates for census metropolitan areas (CMAs) in Quebec and British Columbia were prepared by l'Institut de la statistique du Québec" (ISQ) and BC Stats Ministry of Labour and Citizens' Services respectively. Estimates for Quebec were based on statistics derived from the registration file for insured people of the "Régie de l'assurance-maladie". Estimates for British Columbia were produced using a regression model based upon changes in residential electrical (hydro) connections and Ministry of Health Client Registry counts. These estimates were controlled to Statistics Canada provincial estimates. Please note that for these two specific cases5 Population estimates for July 1 are final intercensal from 2001 to 2010, final postcensal for 2011 to 2013, updated postcensal for 2014 to 2016 and preliminary postcensal for 2017. 6 The population growth, which is used to calculate population estimates of Census metropolitan areas (CANSIM 051-0056), is comprised of the components of population growth (CANSIM 051-0057). 7 This table replaces CANSIM table 051-0046. 8 Please refer to table 17100135 for more recent data. 9 Age at July 1.
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Stocking represents the most important management tool worldwide to increase and sustain commercial and recreational fisheries in a context of overexploitation. Genetic impacts of this practice have been investigated in many studies, which examined population and individual admixture, but few have investigated determinants of these processes. Here, we addressed these questions from the genotyping at 19 microsatellite loci of 3341 adult lake trout (Salvelinus namaycush) from 72 unstocked and stocked lakes. Results showed an increase in genetic diversity and a twofold decrease in the extent of genetic differentiation among stocked populations when compared to unstocked. Stocked populations were characterized by significant admixture at both population and individual levels. Moreover, levels of admixture in stocked populations were strongly correlated with stocking intensity and a threshold value of total homogenization between source and stocked populations was identified. Our results also suggest that under certain scenarios, the genetic impacts of stocking could be of short duration. Overall, our study emphasizes the important alteration of the genetic integrity of stocked populations and the need to better understand determinants of admixture to optimize stocking strategies and to conserve the genetic integrity of wild populations.
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Bird populations within the same species may follow different migratory strategies and phenology depending on their breeding location and latitude, and migratory strategies may be influenced by important stopover sites. Understanding these strategies and identifying important stopover sites is crucial for the conservation of species with regionally varying population trends. In this study, Euphagus carolinus (Rusty Blackbirds) from two populations in eastern North America were affixed with NanoTag (Lotek) transmitters and tracked using the Motus Wildlife Tracking System to determine migratory routes and connectivity, stopover locations, and wintering areas. During fall migration, birds tagged at Observatoire d’oiseaux de Tadoussac, Québec and breeding sites in New England maintained separate migratory routes north of 43° latitude, as indicated by positive Mantel statistics of migratory connectivity, before converging on stopover areas in the Chesapeake and Delaware Bays region of the mid-Atlantic U.S.. Migratory strategy differed between the two populations: birds from New England spent ~two months longer at breeding latitudes than birds from Québec, and Québec birds spent more time at fall stopover sites and wintering latitudes. Birds from both populations made >one-week stopovers during spring and fall migrations and made long-distance (up to 645 km) nocturnal flights. The few winter detections suggested that Rusty Blackbirds from New England wintered at more southern latitudes than birds from Québec. Land cover data around stopover sites indicated that Rusty Blackbirds were positively associated with percent cover of wooded wetlands, croplands, and hay/pasture. Results from this study could help identify and protect regionally important stopover and wintering areas for Rusty Blackbirds, a species that has experienced dramatic long-term population declines linked to habitat loss in the nonbreeding range.
Open Government Licence - Canada 2.0https://open.canada.ca/en/open-government-licence-canada
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The Copper Redhorse (Moxostoma hubbsi) is the only fish whose distribution is exclusively restricted to Quebec. This range is restricted even further to the St. Lawrence River and some of its tributaries. This layer represents the Copper Redhorse critical habitat defined by the analysis of available knowledge and a scientific advice. Purpose The Copper Redhorse population is in decline due to several threats like habitat degradation, construction of dams, contaminants, exotic or introduced species, recreational activities, commercial fishery, and low water levels. Furthermore, certain biological characteristics of the Copper Redhorse contribute to its vulnerability. The Copper Redhorse population was officialy listed as endangered in Schedule I of the Species at Risk Act in December 2007. Additional Information Critical habitat for the Copper Redhorse has been identified to the extent possible, based on the best available information. Two workshops held in 2009 and 2010 by Fisheries and Oceans Canada and the Ministère des Ressources Naturelles et de la Faune du Québec, allowed to review the information and take note of the new data to identify habitat use by the Copper Redhorse in the St. Lawrence and Richelieu rivers and later in the Rivière des Prairies and Rivière des Milles Îles. Adult feeding habitat in the St. Lawrence River between Lake Saint-Louis and Lake Saint-Pierre, was identified using modeling based on the telemetric monitoring of habitat use and on twelve habitat variables (for example: depth, current velocity, vegetation density). Also, recent telemetry and historic data confirmed the use of the lower stretches of the Rivière des Prairies and Rivière des Mille Îles. Critical adult feeding habitat is consequently identified as habitat in the fluvial reach between Montreal and Sorel presenting favorable characteristics for the copper redhorse, used in the model. DFO. 2012. Recovery Strategy for the Copper Redhorse (Moxostoma hubbsi) in Canada. Species at Risk Act Recovery Strategy Series. Fisheries and Oceans Canada, Ottawa. xi+60 pp. https://www.registrelep-sararegistry.gc.ca/document/doc1565p/ind_e.cfm
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New census data on age and sex show that as of May 15, 2001, the median age of Canada's population reached an all-time high of 37.6 years, an increase of 2.3 years from 35.3 in 1996. This was the biggest census-to-census increase in a century. Median age is the point where exactly one-half of the population is older, and the other half is younger. The nation's median age has been rising steadily since the end of the baby boom in 1966, when it was only 25.4 years. Nova Scotia and Quebec were the nation's oldest provinces, each with a median age of 38.8 years. Alberta was the youngest with a median age of 35.0. The group to increase at the fastest pace was that aged 80 and over. From 1991 to 2001, their numbers soared 41.2% to 932,000. The number of people aged 80 or over is expected to increase an additional 43% from 2001 to 2011, during which time it will surpass an estimated 1.3 million. At the same time, Canada has undergone a substantial decline in the number of children aged four and under. In 2001, the census counted 1.7 million children in this age group, down 11.0% from 1991, the result mostly of Canada's declining fertility rate. By 2011, this group may decline to an estimated 1.6 million.
The Copper Redhorse (Moxostoma hubbsi) is the only fish whose distribution is exclusively restricted to Quebec. This range is restricted even further to the St. Lawrence River and some of its tributaries. This layer represents the Copper Redhorse critical habitat defined by the analysis of available knowledge and a scientific advice. Purpose The Copper Redhorse population is in decline due to several threats like habitat degradation, construction of dams, contaminants, exotic or introduced species, recreational activities, commercial fishery, and low water levels. Furthermore, certain biological characteristics of the Copper Redhorse contribute to its vulnerability. The Copper Redhorse population was officialy listed as endangered in Schedule I of the Species at Risk Act in December 2007. Additional Information Critical habitat for the Copper Redhorse has been identified to the extent possible, based on the best available information. Two workshops held in 2009 and 2010 by Fisheries and Oceans Canada and the Ministère des Ressources Naturelles et de la Faune du Québec, allowed to review the information and take note of the new data to identify habitat use by the Copper Redhorse in the St. Lawrence and Richelieu rivers and later in the Rivière des Prairies and Rivière des Milles Îles. Adult feeding habitat in the St. Lawrence River between Lake Saint-Louis and Lake Saint-Pierre, was identified using modeling based on the telemetric monitoring of habitat use and on twelve habitat variables (for example: depth, current velocity, vegetation density). Also, recent telemetry and historic data confirmed the use of the lower stretches of the Rivière des Prairies and Rivière des Mille Îles. Critical adult feeding habitat is consequently identified as habitat in the fluvial reach between Montreal and Sorel presenting favorable characteristics for the copper redhorse, used in the model. DFO. 2012. Recovery Strategy for the Copper Redhorse (Moxostoma hubbsi) in Canada. Species at Risk Act Recovery Strategy Series. Fisheries and Oceans Canada, Ottawa. xi+60 pp. https://www.registrelep-sararegistry.gc.ca/document/doc1565p/ind_e.cfm
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Open Government Licence - Canada 2.0https://open.canada.ca/en/open-government-licence-canada
License information was derived automatically