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 11 of 11 for “"Surface-dwelling"”.
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The Developmental and Genetic Basis of Differences in Cave and Surface-dwelling Forms of the Crustacean, Asellus aquaticus
… <em>Asellus aquaticus</em>, which contains both surface-dwelling and blind cave-dwelling forms. Our goal was to investigate how and when during embryonic development all of these morphologically differences came about. In addition, we wanted to investigate the molecular mechanisms of eye …
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The Phylogenetic Relationships Among Extant Catfishes, With Special Reference to Ictaluridae (Otophysi: Siluriformes)
… A novel hypothesis of relationships among surface-dwelling ictalurid genera is provided in which Ameiurus is the sister group to a clade composed of Ictalurus, Pylodictis and Noturus, in which Ictalurus is the sister group to Pylodictis and Noturus.
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Distribution, growth, and transport of larval fishes and implications for population dynamics
… simulations of representative behaviors, surface-dwelling larvae were generally transported longer distances with greater population connectivity amongst habitat patches, while the evenly-distributed vertical behavior and downward ontogenetic vertical migration were similar to one another …
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The effect of reduced cultivation on selected soil fauna
… These were sampled during three crop years for surface dwelling earthworms and epigeic fauna. The effects of straw baling and burning, on the numbers and species of surface dwelling earthworms, and of epigeic invertebrateswas investigated at the second farm, Ashley Hall in Cheshire. At both …
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Surface and Subsurface Application of Chemical Dispersants and Associated Ecosystem Impacts
… shorelines, reducing environmental injury to surface-dwelling sea birds and marine mammals, and facilitating the biodegradation of spilled oil into the water column. </p> <p>For this research, both surface and subsurface application of dispersants were evaluated in terms of oil characteristics …
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Benthic Community Responses to Hypoxic Conditions in the Lower Rappahannock River, Virginia
… and intermediate depths were dominated by surface-dwelling opportunistic Fauna. Several lines of evidence indicate a continuous degradation of the communities inhabiting the two deepest sampling depths, including depressed levels of infaunal biomass and diversity preceding summer hypoxia, a …
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Distribution, growth, and transport of larval fishes and implications for population dynamics
… simulations of representative behaviors, surface-dwelling larvae were generally transported longer distances with greater population connectivity amongst habitat patches, while the evenly-distributed vertical behavior and downward ontogenetic vertical migration were similar to one another …
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Seasonal and Annual Variability In Elemental and Isotopic Proxies of Past Ocean Conditions: Results From the Guaymas and Cariaco Basins
… reflect species habitat preferences with shallow dwelling species having the lowest δ18O and deeper dwelling species the highest. The surface dwelling Globigerinoides ruber most accurately records sea surface temperature (SST). Surface to thermocline temperature gradients can be reconstructed …
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Flamingo foraging plasticity: ecological drivers and impacts
… are swept from side-to-side on the sediment surface. The first objective of the study was to quantify the ecological drivers of decisions made by flamingos to feed, and to implement either pit- or channel-foraging strategies. The latter was achieved through RandomForest modelling techniques …
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Tīmata whakaora, kickstarting recovery - Using bivalves to bioremediate degraded estuarine sediments
… bivalve species, Austrovenus stutchburyi, a surface-dwelling suspension feeding bioturbator, and Macomona liliana, a deep-burrowing porewater-pressuriser, in supporting recovery of estuarine function following disturbance. Two field experiments in Tauranga Harbour, Aotearoa New Zealand were …