Determining regional benchmarks of fish productivity using existing electrofishing data from rivers: Fs70-5/2017-018E-PDF
proof of concept /
“Electrofishing data from streams and rivers in Newfoundland, the Maritime Provinces, Ontario, Alberta and British Columbia showed regional differences in fish productivity. The existing electrofishing data were originally collected by different agencies for various reasons, including the determination of stock status of harvested species, the investigation of fish habitat associations, and the investigation of the status and life history characteristics of Endangered fish species. Despite being targeted for specific species, electrofishing catches of all cohabiting species at the sites were recorded, providing estimates of total density (fish m-2) and biomass (g m-2) of the fish community. The datasets varied in duration and spatial extent from ‘snapshots’ (< 5 years and a small number of sites) to time series (> 10 years and spatially extensive). For each site, a Habitat Productivity Index (HPI) was also estimated as an index of production. Estimates of region-dependent fish productivity were proof of concept and demonstrated the feasibility of using existing electrofishing data to determine spatial differences in productivity in the rivers and streams of Canada. Also, differences in productivity are likely predictable from readily-available landscape drivers such as air temperature and location. Existing fishing areas or zones are a possible spatial unit for aggregating the data. Limitations of using existing electrofishing data included uncertainty of fish capture probability and unknown status of resident and migratory species in terms of carrying capacity"--Abstract, p. iv.
|Department/Agency||Department of Fisheries and Oceans. Ecosystems and Oceans Science.|
|Title||Determining regional benchmarks of fish productivity using existing electrofishing data from rivers|
|Subtitle||proof of concept /|
|Series Title||Canadian Science Advisory Secretariat (CSAS), research document,|
|Publication Type||Series - View Master Record|
|Electronic Document|| |
Information identified as archived is provided for reference, research or recordkeeping purposes. It is not subject to the Government of Canada Web Standards and has not been altered or updated since it was archived. Please contact the authoring department to request a format other than those available.
We invite you to consult the Frequently Asked Questions page for additional information regarding the Archived Content notice.
Note: The URLs contained in this/these document(s) may no longer be functional
|Note||Cover title. “March 2017.” Title at head of French abstract: Déterminer les points de référence régionaux pour la productivité du poisson au moyen de données existantes sur la pêche à l'électricité dans les rivières : validation de principe.|
|Number of Pages||v, 50 p. :|
|Subject Terms||Fisheries resources, Fish, Biomass, Watercourses, Fisheries management|
- Date modified: