Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 6 of 6 for “"Isotopic niche"”.
-
Investigating population structure and resource use diversity in Lake Huron Lake (Coregonus clupeaformis) and Round (Prosopium cylindraceum) Whitefish using compound specific stable isotopes analysis
… confounded by various factors that contribute to isotopic variation. Compound specific stable isotope analysis (CSIA) of amino acids offers higherresolution information, allowing for the examination of baseline resource use and trophic position estimation for a sampled consumer. My research aimed …
-
Spatial, temporal and within-species variation in the foraging ecology of a marine predator across a dynamic seascape
… of ringed seal dietary prey contributions, isotopic niche size and trophic position during ontogeny across the Arctic. I found a general latitudinal trend where the level of fish consumption and trophic position of ringed seals decreased due to increased prevalence of sub-arctic fish species …
-
The foraging ecology of minke whales (Balaenoptera acutorostrata) in Northeast Scottish waters using stable isotope analysis
… (spring-summer) variation and overlap in the isotopic niche between adults and juveniles; and (iv) interpret these new findings in the context of emerging threats such as prey stock decline and evaluate their implications for management within the Scottish Marine Protected Area (MPA) network. …
-
Interactions between Walleye Sander vitreus and Smallmouth Bass Micropterus dolomieu in Missouri River reservoirs
… My second research chapter assessed diet and isotopic niche overlap between Smallmouth Bass and Walleye in Lake Oahe and Lake Sharpe. We collected predator diets and isotope samples May-September 2019 and 2021 from Lake Sharpe and Lake Oahe, SD, used Morisita’s index to determine diet overlap, …
-
Assessing risk to native ecosystems: using exotic ants as a model
… between native and invasive ants using isotopic niche overlap and co-occurrence patterns, as well as employing DNA metabarcoding, to understand what invertebrate taxa are most at risk via predation. Furthermore, I investigated the potential disruption of floral visitor networks by exotic …
-
Movement, habitat selection, and resource use by western painted turtles (Chrysemys picta bellii) in an urban environment near their northern range limit
… I studied habitat selection, space use, and isotopic resource use of an urban population of western painted turtles (Chrysemys picta bellii) residing in Wascana Creek in Regina, Saskatchewan from May 2015 to April 2017. Using radio-telemetry to track movements, I determined habitat selection …