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ShareScore release 0.9.0
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26 results for “Ontario Lakes”
Data for: Depth and temperature drive patterns of spatial overlap among fish thermal guilds in lakes across Ontario, Canada
<p>Aim: As fishes are ectothermic, their spatial distributions are strongly dependent on the temperature of their environments. In temperate lakes, fishes with different thermal optima can become spatially segregated during summer stratification. This habitat partitioning, or niche complementarity, may play a role in the coexistence of trophically similar species; however, the extent of partitioning is dependent on the resources available within each habitat. Although habitat partitioning of fish thermal guilds has been studied in individual lakes, broad-scale patterns of spatial overlap and segregation are not yet understood. In this study, we explore the patterns and drivers of spatial overlap among thermal guilds (cold-, cool-, and warm-water) at a broad scale.</p> <p>Location: Ontario, Canada.</p> <p>Methods: We explored patterns of spatial overlap among three thermal guilds, estimated from standardized gillnetting, in 438 lakes. We used a multivariate regression tree to identify such patterns, as well as the environmental factors that drive these patterns.</p> <p>Results: We identified five clusters of lakes exhibiting different patterns of spatial overlap among the three thermal guilds. Temperature (growing degree days) and maximum lake depth were strong drivers of the spatial overlap patterns. The proportional abundance of each thermal guild was similar among the clusters but there was some evidence of species turnover within the warm-water guild.</p> <p>Main conclusions: These findings not only provide a better understanding of broad-scale patterns of spatial overlap, but also allow us to predict how spatial overlap, and ultimately species interactions and competition, may change under a warming climate.</p>
Data from: Tracking the history and ecological changes of rising double-crested cormorant populations using pond sediments from islands in eastern Lake Ontario
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Data for: Depth and temperature drive patterns of spatial overlap among fish thermal guilds in lakes across Ontario, Canada
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Data from: Comparison of diets for largemouth and smallmouth bass in Eastern Lake Ontario using DNA barcoding and stable isotope analysis
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Data on zooplankton species and lake environments from 29 lakes in southern Ontario, Canada
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Data from: Historical and anthropogenic factors affecting the population genetic structure of Ontario’s inland lake populations of walleye (Sander vitreus)
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