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 20 of 26 for “"megafauna"”.
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Biologging for marine megafauna conservation: animal tracking, environmental monitoring, and modelling approaches.
Marine megafauna face ongoing threats from human activities, including fishing pressure, habitat destruction, and climate change. Biologging—the use of electronic tags to study animal movement, behaviour, physiology—has emerged as a critical tool for understanding animal ecology and informing …
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Vertical distributions of megafauna on inactive vent sulfide features correspond to their feeding modes
… Previous seafloor imaging studies indicate that megafaunal taxa on inactive sulfides are not endemic to these features, but their assemblages differ from other deep-sea habitats. I investigated the influence of environmental conditions on megafaunal distributions using highresolution imagery of …
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Vertical distributions of megafauna on inactive vent sulfide features correspond to their feeding modes
… Previous seafloor imaging studies indicate that megafaunal taxa on inactive sulfides are not endemic to these features, but their assemblages differ from other deep-sea habitats. I investigated the influence of environmental conditions on megafaunal distributions using highresolution imagery of …
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Habitats da megafauna marinha na costa nordeste do Brasil, com ênfase em peixes-bois.
… foi avaliar a distribuição e a abundância da megafauna marinha no nordeste do Brasil, com ênfase em peixes-bois marinhos e seus potencias habitats de forrageio (prados de angiospermas marinhas), por meio de pesquisas aéreas e terrestres. A viabilidade das pesquisas aéreas foi testada …
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Métodos analíticos nucleares aplicados à cronologia de mamíferos do pleistoceno
… tão grandes quanto tíbias, rádios e fêmures da Megafauna. Ambos os modelos são capazes por si só de determinar a idade do osso ao conhecer o parâmetro adimensional t´e o coeficiente de difusão efetivo (D/R). Porém, é preciso conhecer ambos simultaneamente e na falta de um ou outro é necessário a …
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A 210,000-year reconstruction of subtropical climates from Fern Gully Lagoon, North Stradbroke Island (Minjerribah), Australia
… and moisture availability during peak Australian megafauna extinction to be identified (Chapter 2). • A chronology for a new wetland sediment record from subtropical Fern Gully Lagoon, using radiocarbon (14C) and optically stimulated luminescence age determination as well as estimated hiatus …
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Biodiversity patterns in False Bay: an assessment using underwater cameras
… that explain the variation in epibenthic megafauna and ichthyofauna communities, b) a quantitative account of the epibenthic megafauna on the eastern reefs where species diversity was highest, and c) the synthesis of seafloor descriptions with the epibenthic megafauna and ichthyofauna to …
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How rewilding impacts ecosystem health in a semi-arid region
… test the general idea that the reintroduction of megafauna such as elephant, rhino, and buffalo will alter soil and vegetation characteristics as well as dung beetle assemblages via megafauna trampling and feeding behaviours, ultimately improving ecosystem health. This was conducted in two …
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Respuesta de las asociaciones de fauna megabéntica a diferentes tipos de hábitats en cuencas del Golfo de California
… decápodos (Munidopsis). El patrón de la megafauna en el área de sediento en la cuenca Delfín es distinto, dominado por peces bentopelágicos (Macrouridae) y pulpos. El tipo de sustrato está correlacionado con la variación en la diversidad, la riqueza taxonómica y la composición de la fauna …
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Composição da fauna bêntica rasa em duas estações (12 e 25 metros de profundidade) ao longo de um ciclo anual na Baía do Almirantado, Ilha Rei George, Antártica
The megafauna, macrofauna and Polychaeta communities at 12 and 25 meters depth in Admiralty Bay (King George Island, Antarctica) were studied along the Antarctic winter (March to December 1999) and summer (December 2000 to March 2001 ), through an entire seazonal cycle. Samplings were carried out …
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Elephant fruit :The dispersal attributes of Balanites maughamii / Storme Viljoen
… that have obligate dispersal mutualisms with megafauna are at risk of extinction because of the unique conservation threats associated with large animals. This study examines Balanites maughamii which appears to have similar dispersal attributes to Sclerocarya birrea and Balanites wilsoniana, …
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Seed dispersal in South African trees: with a focus on the megafaunal fruit and their dispersal agents
… of large terrestrial vertebrates (>1000kg - megafauna) but had remained long after their demise (Janzen and Martin, 1982).
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Ecological controls on density, diversity and community structure of Polar Megabenthos
… the north and south of the channel. Epibenthic megafauna in the south are dominantly filter feeders and in the north deposit feeders. Megabenthic diversity and density decreased to the northeast of the channel. Lebensspuren number and area increase northwards in the Channel. The increase in …
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Beyond the beach: a look into the community value of the Shark Spotters Organisation
… the interactions between beach goers and marine megafauna, with special attention given to sharks. Their employees do this through an exclusion net and a flag signaling system. Shark Spotters provides employees opportunities to increase their knowledge and skills in areas that can be used outside …
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Investigation and application of methods for ancient DNA research
… bison, because these animals are ideal models of megafauna evolution. Using the in-house hybridization capture system, whole mitochondrial genomes were enriched from aDNA and used to help identify a new extinct species of bison. Furthermore, the new analytical approach for BovineSNP50 BeadChip …
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Kinematic State Estimation using Multiple DGPS/MEMS-IMU Sensors
… a wild animal from a family of a terrestrial megafauna.
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Sarah Across America
… control most of North and South America, where megafauna such as mammoths and saber-toothed cats still walk. York has survived the century plus since the disappearance of this world's Lewis and Clark Expedition, having been mystically trapped in an aetheric map. At the same time, incursions from …
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Faunal and human biogeography during the Terminal Pleistocene.
The evocative megafauna of the mammoth steppe, such as woolly mammoths and woolly rhinos, are part of a complex and changing faunal and environmental system. The dynamic processes leading to faunal change (including extinction) are currently not fully understood. In order to unravel these …
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Soft sediment ecology of Lough Hyne Marine Reserve - spatial and temporal patterns
… Recolonisation by macrofauna and burrowing megafauna was studied during normoxic conditions, from November 2009 to May 2010. Macrofauna displayed a typical post-disturbance pattern of recolonisation with one species, the polychaete Scalibregma inflatum, occurring at high abundance levels in …
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Conservation genetics of African elephants
Elephant population numbers are plummeting across the African continent. Habitat loss as a consequence of anthropogenic landscape transformation, and the poaching of elephants for the illegal ivory trade, has reduced and fragmented elephant populations to a fraction of their former population size …
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