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Full-Text Articles in Life Sciences
Quantifying Population-Level Effects Of Warm-Water Catch-And-Release Mortality On Muskellunge (Esox Masquinongy) In The James River, Virginia, Cory J. Bauerlien
Quantifying Population-Level Effects Of Warm-Water Catch-And-Release Mortality On Muskellunge (Esox Masquinongy) In The James River, Virginia, Cory J. Bauerlien
Electronic Theses and Dissertations
Catch-and-release (C&R) has become a popular practice in many fisheries, both as a management strategy and as an angler ethic. The practice has been used to both increase the abundance and size structure of fish populations but relies heavily on the assumption that released fish survive the encounter. The Muskellunge (Esox masquinongy) is a large-bodied, coolwater predatory game fish that is highly prized by many anglers. Many Muskellunge fisheries have transitioned to almost exclusively C&R angling. Muskellunge fisheries have increased in both number and popularity, particularly in southern and mid-Atlantic rivers. However, there is little information on population characteristics for …
Detection, Occupancy, Abundance, And Mercury Accumulation Of The Alligator Snapping Turtle (Macrochelys Temminckii) In Texas, David Rosenbaum
Detection, Occupancy, Abundance, And Mercury Accumulation Of The Alligator Snapping Turtle (Macrochelys Temminckii) In Texas, David Rosenbaum
Electronic Theses and Dissertations
Land use practices and physical alterations of ecosystems result in habitat loss and fragmentation, while chemical alterations, such as pollutant input, reduce habitat quality and health of exposed organisms. Here, I investigated the effects of watershed- and local-scale environmental variables on the occupancy, abundance, and mercury accumulation of a threatened aquatic species (Macrochelys temminckii, i.e., alligator snapping turtle) within the southwestern periphery of its distribution. Hierarchical modeling suggested the distribution of the species is more affected by watershed-scale land-cover than local habitat, and provided a baseline estimate of average species abundance across its range in eastern Texas. Abundance …