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biologyfish migration
climatology
food web
wetlands
aquatic invertebrates
water temperature
species productivity
wildlife monitoring
fish population
spawning areas
fish habitat
ecological monitoring
lake trout
tissue sampling
species distribution
metal concentrations
radio-marking
sculpin
contaminants
4 dossier(s) trouvé(s) portant l’étiquette "seasonal variation" (les projets pluriannuels sont regroupés):
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Effect of spring and summer temperatures on amphipod reproduction (Gammarus lacustris)
chercheur principal: Messmer, David J
Année(s) de permis: 2012
Résumé: To determine how spring and summer temperatures affect the abundance of the amphipod Gammarus lacustris throughout the summer. Over the 2 years of the experiment, the research team plans to use amphipods from 4 different sources over several latitudes (Montana-USA, St. Denis-SK, Yellowknife-NT, Inuvik, NT). Using this variety of geographic sources will allow us to assess if different populations...
Année(s) de permis: 2012
Résumé: To determine how spring and summer temperatures affect the abundance of the amphipod Gammarus lacustris throughout the summer. Over the 2 years of the experiment, the research team plans to use amphipods from 4 different sources over several latitudes (Montana-USA, St. Denis-SK, Yellowknife-NT, Inuvik, NT). Using this variety of geographic sources will allow us to assess if different populations...
2001 Baseline Slimy Sculpin/Lake Trout Habitat Utilization Studies
chercheur principal: Madsen, Eric
Année(s) de permis: 2001 2000
Résumé: The objective of this study is two fold: a) to collect slimy sculpin tissue samples for baseline metal analysis; b) to monitor seasonal lake trout habitat utilization in Lac de Gras using radio telemetry methodologies. Twenty-five Slimy sculpins will be collected using baited minnow traps and opportunistic underwater netting, using professional SCUBA divers if available. Samples will be sent to ap...
Année(s) de permis: 2001 2000
Résumé: The objective of this study is two fold: a) to collect slimy sculpin tissue samples for baseline metal analysis; b) to monitor seasonal lake trout habitat utilization in Lac de Gras using radio telemetry methodologies. Twenty-five Slimy sculpins will be collected using baited minnow traps and opportunistic underwater netting, using professional SCUBA divers if available. Samples will be sent to ap...
Peel River Fish Study
chercheur principal: Walker-Larsen, Jennifer
Année(s) de permis: 2001
Résumé: Community monitors will be hired to catch and sample fish from their camps. These camps will be accessed by boat and helicopter. Monitors will catch fish with an experimental gillnet, measure fish and remove aging structures. There will be no fish wasted-all fish will be kept and used by the monitors....
Année(s) de permis: 2001
Résumé: Community monitors will be hired to catch and sample fish from their camps. These camps will be accessed by boat and helicopter. Monitors will catch fish with an experimental gillnet, measure fish and remove aging structures. There will be no fish wasted-all fish will be kept and used by the monitors....
Organic Contaminants in the Arctic Ecosystem: Utilizing the Ringed Seal (Phoca hispida) as a Biomonitor
chercheur principal: Metcalfe, C.D.
Année(s) de permis: 1991
Résumé: The Research will examine the variation of organochlorine contaminants (O.C.'s) in the arctic ringed seal species. Major trends in concentrations will be outlined on 4 distinct levels: 1) variation within individual seals 2) seasonal variation in one seal popultion 3) variation between seal popultaions from two distinct sites 4) long-term temporal variations at these two locations....
Année(s) de permis: 1991
Résumé: The Research will examine the variation of organochlorine contaminants (O.C.'s) in the arctic ringed seal species. Major trends in concentrations will be outlined on 4 distinct levels: 1) variation within individual seals 2) seasonal variation in one seal popultion 3) variation between seal popultaions from two distinct sites 4) long-term temporal variations at these two locations....
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