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Full-Text Articles in Marine Biology
Trophic Ecology Of Green Turtles (Chelonia Mydas) From Dry Tortugas National Park, Florida, David C. Roche
Trophic Ecology Of Green Turtles (Chelonia Mydas) From Dry Tortugas National Park, Florida, David C. Roche
HCNSO Student Theses and Dissertations
Located 100 km west of Key West, Florida, Dry Tortugas National Park (DRTO) is a largely untouched subtropical marine ecosystem that serves as an important developmental habitat, nesting ground, and foraging area for several species of sea turtles, including green turtles. The Park supports a recovering population of green turtles comprised of resident juveniles, subadults, and adults of both sexes; nesting females include residents and migrating females that only return to nest. Stable isotope analysis has been applied widely to describe the trophic ecology of green turtles, from urbanized bays with significant anthropogenic input, to relatively pristine ecosystems with healthy …
Latitudinal Variation In Ecological Opportunity And Intraspecific Competition Indicates Differences In Niche Variability And Diet Specialization Of Arctic Marine Predators, David J. Yurkowski, Steven Ferguson, Emily S. Choy, Lisa L. Loseto, Tanya M. Brown, Derek Cg Muir, Christina Ad Semeniuk, Aaron T. Fisk
Latitudinal Variation In Ecological Opportunity And Intraspecific Competition Indicates Differences In Niche Variability And Diet Specialization Of Arctic Marine Predators, David J. Yurkowski, Steven Ferguson, Emily S. Choy, Lisa L. Loseto, Tanya M. Brown, Derek Cg Muir, Christina Ad Semeniuk, Aaron T. Fisk
Great Lakes Institute for Environmental Research Publications
Individual specialization (IS), where individuals within populations irrespective of age, sex, and body size are either specialized or generalized in terms of resource use, has implications on ecological niches and food web structure. Niche size and degree of IS of near-top trophic-level marine predators have been little studied in polar regions or with latitude. We quantified the largescale latitudinal variation of population- and individual-level niche size and IS in ringed seals (Pusa hispida) and beluga whales (Delphinapterus leucas) using stable carbon and nitrogen isotope analysis on 379 paired ringed seal liver and muscle samples and 124 paired beluga skin and …