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 5 of 5 for “"bioproductivity"”.
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Pliocene-Pleistocene Radiolarian Investigations of the Equatorial Oceans
… this time, trade wind intensity, upwelling, and bioproductivity is reduced, with a concomitant rise in sea-surface temperatures. A comparison with land sequences indicate palaeoenvironmental changes consistent with known El Nino phenomena, although these conditions are likely to lay beyond the …
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Geo- and biodynamic evolution at the northern margin of Gondwana during Late Silurian to Early Devonian time (Hazro Area, SE Turkey)
… the inner shelf zone documents a period of high bioproductivity. Due to the gradual drop of relative sea level, the sea floor was subjected to more frequent disruptive storms within the inner shelf zone (2). Partly turbulent depositional conditions caused a decrease in planktonic activity, …
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Spatial and temporal variations in the geometry and composition of the Permian Whitehill Formation South Africa
… have accumulated in a marine setting with high bioproductivity of organic carbon delivered in form of flocculated organo-minerallic aggregates (pelagic snow) onto an anoxic seabed overlain by dysoxic to oxic waters. Reduced terrigenous input, presence of phosphorites, increasing CIA and …
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Phylogenetic and physiological characterization of deep-biosphere microorganisms in El’gygytgyn Crater Lake sediments
… as an enhanced temperature-induced intra-lake bioproductivity and higher input of allochthonous organic-rich material during Pliocene climatic conditions. Moreover, the microbial richness parameters follow the general trends of the paleoclimatic parameters, such as the paleo-temperature and …