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.
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Showing 1 to 6 of 6 for “"Prey Diversity"”.
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Diet Analysis of Stranded Bottlenose Dolphins (<i>Tursiops truncatus</i>) in Virginia
… frequency of occurrence, average reconstructed prey size, prey diversity and quantity, and otolith degradation code. Fish size was estimated via regression equations established from local fish collected during the study that derive wet weight directly from otolith length or width. Squid size is …
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Aspects of the ecology of migrant shorebirds (Aves: Charadrii) at the Berg River estuary, South Africa
… a high predation pressure. Although the rate of prey removal by birds is one of the highest recorded in the east Atlantic, it represents only 17% of the annual production of invertebrates. A bird-exclusion experiment confirmed that birds have little impact on their prey populations. Although the …
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Effects of forest management, prey, and predators on the habitat selection of fishers in the South Cascades of Washington.
… for reproduction, relies on a variety of prey, and interacts with a number of other carnivore species. In this thesis, I assessed prey availability for a reintroduced population of fishers and modeled their habitat selection based on forest structure, prey, and predators to better …
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The structure of pelagic seabird assemblages in the African sector of the Southern Ocean
… distribution of peculiar oceanic biotopes and prey populations in the African sector of the Southern ocean. The hypothesis examined was that the distribution and abundance of seabirds are non-random and predictable with respect to the availability of prey at the sea-surface. The distribution of …
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Biology of Age-1 and Older Yellow Perch in West-Central Minnesota Lakes
… 2 yellow perch used larval fishes as a source of prey. Results from spring trap netting in 1999 indicated that yellow perch in the four study lakes exhibited slower growth than the Minnesota statewide average and rarely reached total lengths of 20 cm. Yellow perch relative weight Wr values were …
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The foraging ecology of the short-tailed shearwater puffinus tenuirostris.
… within circles of a diameter of 14 ± 3 km (SE). Prey returns from area restricted search flights were predominated by bony fish, whereas prey diversity increased for non-area restricted search flights, with more krill and cephalopods. Thus, direct flights were performed when birds were exploiting …