Analysing Habitat Connectivity and Home Ranges of Bigmouth Buffalo and Channel Catfish Using a Large-Scale Acoustic Receiver Network
| Autor: | Douglas R. Leroux, Eva C. Enders, Henry H. Hansen, Douglas A. Watkinson, Colin Kovachik, Colin Charles, Mark A. Pegg |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Ictiobus cyprinellus lcsh:TJ807-830 Geography Planning and Development lcsh:Renewable energy sources ecohydraulics Management Monitoring Policy and Law Structural basin 010603 evolutionary biology 01 natural sciences lcsh:Environmental sciences Ictalurus punctatus lcsh:GE1-350 geography.geographical_feature_category biology Renewable Energy Sustainability and the Environment lcsh:Environmental effects of industries and plants 010604 marine biology & hydrobiology biology.organism_classification fish passage fish telemetry Fishery lcsh:TD194-195 Geography Habitat Ictalurus river restoration Scale (map) Channel (geography) Catfish Fish movement |
| Zdroj: | Sustainability Volume 11 Issue 11 Sustainability, Vol 11, Iss 11, p 3051 (2019) |
| ISSN: | 2071-1050 |
| Popis: | The determination if fish movement of potadromous species is impeded in a river system is often difficult, particularly when timing and extent of movements are unknown. Furthermore, evaluating river connectivity poses additional challenges. Here, we used large-scale, long-term fish movement to study and identify anthropogenic barriers to movements in the Lake Winnipeg basin including the Red, Winnipeg, and Assiniboine rivers. In the frame of the project, 80 Bigmouth Buffalo (Ictiobus cyprinellus) and 161 Channel Catfish (Ictalurus punctatus) were tagged with acoustic transmitters. Individual fish were detected with an acoustic telemetry network. Movements were subsequently analyzed using a continuous-time Markov model (CTMM). The study demonstrated large home ranges in the Lake Winnipeg basin and evidence of frequent transborder movements between Canada and the United States. The study also highlighted successful downstream fish passage at some barriers, whereas some barriers limited or completely blocked upstream movement. This biological knowledge on fish movements in the Lake Winnipeg basin highlights the need for fish passage solutions at different obstructions. |
| Databáze: | OpenAIRE |
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