What controls who is where in freshwater fish communities

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI: Jackson and Pedro R. Peres-Neto and Julian D. Jackson , P. Peres-Neto , J. Olden Published Biology Canadian Journal of Fisheries and Aquatic Sciences We examine evidence for the structuring of fish communities from stream and lake systems and the roles of biotic, abiotic, and spatial factors in determining the species composition.

Piscivory by fish is a dominant factor in both stream and lake systems whereas evidence for the importance of competition appears less convincing. Within small streams or lakes, the impact of predation may exclude other species, thereby leading to mutually exclusive distributions and strong differences in community… Expand. View via Publisher. Save to Library Save. Create Alert Alert. Share This Paper. Background Citations. Methods Citations. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.

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Journal Article. AND E. Freshwater Fish Communities. Consequently, the relative abundance of these cold-coolwater and fluvial fish serves as an indicator of ecosystem condition. This study contributes to the overall assessment of freshwater ecosystems for the Narragansett Bay Estuary Program, identifies data gaps and research needs, and provides a baseline to assess future trends. Freshwater fish are ecologically important in stream ecosystems, and they provide people with significant food, recreation, and conservation value as biological indicator of freshwater streams.

Historically, the streams and rivers of southern New England supported moderately diverse and abundant assemblages of native fishes. For example, brook trout Salvelinus fontinalis is a cold-water, fluvial species that is highly valued for conservation and recreation.