Browsing University of Waterloo by Supervisor "Power, Michael"
Now showing items 1-12 of 12
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Assessing reasons for changes in the condition of Deception Bay Arctic charr (Salvelinus alpinus)
(University of Waterloo, 2019-01-24)The Raglan Mine sport fishing program has collected biological fish data in Deception Bay, Nunavik, Québec, Canada since 1998 in collaboration with local committees, small scale sampling programs, and government agencies ... -
Effects of Hydroelectric Dam Operation on Downstream Fish Populations
(University of Waterloo, 2016-05-12)Naturally flowing rivers form a longitudinal gradient of physical conditions to which fish communities are adapted. Hydroelectric dams disrupt the river continuum, resulting in alterations to downstream hydrologic and ... -
Environmental variability and intraspecies diversification in Arctic charr (Salvelinus alpinus)
(University of Waterloo, 2016-06-17)Arctic charr (Salvelinus alpinus) exhibit what is arguably the greatest observed range of phenotypic and ecological diversity within a single vertebrate species. The patterns of adaptive diversity that have developed among ... -
Fish feeding variability over space and time in natural and regulated boreal rivers
(University of Waterloo, 2016-09-20)Within the boreal region of Canada, river ecosystems are affected by naturally low flows in the summer months and hydropower operations, which can greatly influence the structure and function of river food webs. Few long-term ... -
Invasive Round Goby (Neogobius melanostomus) impacts on native fishes in tributaries of the Great Lakes
(University of Waterloo, 2022-12-19)Many invasive species have established in the Laurentian Great Lakes basin and have caused substantial impacts to native species and the lacustrine ecosystems within the basin. The establishment of Round Goby (Neogobius ... -
Investigations into food web structure in the Beaufort Sea
(University of Waterloo, 2017-12-18)The effects of climate change on marine ecosystems are most pronounced in the Arctic, where ice free summers have been predicted to occur by mid-century. Climate-related changes to sea ice phenology, oceanographic habitat ... -
Lipid and condition analyses of West Greenland marine feeding Atlantic salmon (Salmo salar L.)
(University of Waterloo, 2018-09-20)A regime shift in the Northwest Atlantic in the 1990s caused changes to the diet and productivity of marine-feeding Atlantic salmon (Salmo salar L.) off the West Greenland coast. Investigations into the implications of the ... -
The Marine Feeding Habits of Atlantic Salmon (Salmo salar L.) in the Northwest Atlantic
(University of Waterloo, 2016-06-07)Investigations on marine feeding of Atlantic salmon (Salmo salar L.) in the Northwest Atlantic are rather limited in comparison with studies carried out in the Northeast Atlantic. Climate induced changes to food webs in ... -
Mercury dynamics in the anadromous Arctic char (Salvelinus alpinus) and food webs of inner Frobisher Bay, Nunavut
(University of Waterloo, 2022-07-06)Mercury (Hg) is a ubiquitous toxic metal that bioaccumulates in organisms and biomagnifies in food webs. Evaluating Hg bioaccumulation and biomagnification in Arctic marine ecosystems is critical for understanding Hg ... -
Seasonal and environmental effects on physiological tolerances and gill adaptations of imperilled Eastern Sand Darter (Ammocrypta pellucida)
(University of Waterloo, 2024-02-15)In the absence of accurate biological information, conservation and recovery strategies carry the risk of failing to meet their objectives. Understanding species-specific physiological tolerances is important for several ... -
Spatial and temporal patterns of habitat use in anadromous Arctic charr Salvelinus alpinus in nearshore marine and overwintering lake environments
(University of Waterloo, 2019-01-15)Even though anadromy is integral to the life history of the Arctic charr (Salvelinus alpinus) in many northern regions, little is known about what shapes the patterns of anadromy. Moreover, little is known about the habitat ... -
Understanding species life-history and ecology for improved conservation and recovery of the threatened Silver Shiner, Notropis photogenis
(University of Waterloo, 2022-06-03)Conservation and recovery strategies are typically developed with the best available information. However, for many imperilled small-bodied freshwater fish species there is often a lack of basic information available on ...