Lake sediments
Historical changes in the ecosystem condition of a small mountain lake over the past 60 years as revealed by plankton remains and Daphnia ephippial carapaces stored in lake sediments.
... in lake sediments may not reflect population density of Daphnia species in the past because the production rate of resting eggs depends on not only environmental conditions [16, 17] but also the population ...
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Organic matter mineralization and trace element post-depositional redistribution in Western Siberia thermokarst lake sediments
... of sediments and their porewaters from three thermokarst (thaw) lakes representing different stages of ecosystem development located within the Nadym-Pur in- terfluve of the Western Siberia ...the lake ...
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Factors controlling the geochemical composition of Limnopolar Lake sediments (Byers Peninsula, Livingston Island, South Shetland Island, Antarctica) during the last ca. 1600 years
... The LIM03/1 core represents the uppermost 57 cm of the composite sediment sequence studied by Toro et al. (2013) in Limnopolar Lake sediments. Although the long sequence does not include the uppermost 10 ...
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Mechanisms of algal biomass input enhanced microbial Hg methylation in lake sediments
... Chaohu Lake. The Chaohu Lake, which suffers severe eutrophication, is the fifth largest freshwater lake in China ( Jiang et ...Chaohu Lake during algal blooms (Jiang et ...Chaohu Lake ...
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RESIDUE ANALYSIS OF ORGANOCHLORINE AND ORGANOPHOSPHORUS PESTICIDES IN URBAN LAKE SEDIMENTS
... ABSTRACT: The knowledge of pesticide residual concentrations in the environment is important to understand the threats to the environment and human health, especially when natural resources are used for human ...
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Sediment transport processes across the Tibetan Plateau inferred from robust grain-size end members in lake sediments
... because sediments can get mixed during depo- ...and lake ice phenology, gridded wind and shear stress data from the High Asia Reanalysis) and local catchment config- ...
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Concentration of heavy metals in Água Preta lake sediments (Pará, Brazil)
... The present study evaluated the concentrations of nutrients and heavy metals in bottom sediments of Água Preta lake, located in the metropolitan region of Belém, Pará state, Brazil. Concentrations of heavy ...
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Spatial distribution of palynomorphs in the surface sediments of the Lagoa do Campelo lake, North region of Rio de Janeiro State, Brazil
... surface sediments of the Lagoa Salgada (northern region of the Rio de Janeiro State), situated in a restinga area about ...our sediments as Anacardiaceae, Anadenanthera, Cordia, Guarea, Hyptis, Ilex, ...
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Lake Qinghai Scientific Drilling Project
... The lake basin thus is intimately related to the active tectonics of the Tibetan ...the lake sediments are tectonically deformed in some parts of the basin and largely undeformed in other parts, ...
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Magnetostratigraphy of sediments from Lake El'gygytgyn ICDP Site 5011-1: paleomagnetic age constraints for the longest paleoclimate record from the continental Arctic
... from Lake El’gygytgyn, which occupies a meteorite impact crater in the Far East Russian Arctic, revealed a continu- ous record of paleoenvironmental variability responding to orbitally driven summer insolation ...
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Bacterial GDGTs in Holocene sediments and catchment soils of a high Alpine lake: application of the MBT/CBT-paleothermometer
... for Lake Cadagno, we found that “regular” soils and the surface sediments showed similar GDGT ...the lake water column and/or in sediments, on the other hand, appears unlikely, as this would ...
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Limnological characterisation and phytoplankton seasonal variation in a subtropical shallow lake (Guaiba Lake, Brazil): a long-term study
... (meso-eutrophic) compared to sites SJ and MD (eutrophic). Phytoplankton density was also significantly higher at sites SJ and MD, and the largest relative contribution of Actinastrum sp., Dictyosphaerium sp., ...
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ACOUSTIC RESPONSE OF AMAZON SHELF MUDDY SEDIMENTS
... of sediments with different grain sizes, Macedo et ...that sediments with a high concentration of water provide a move- ment almost in phase to where the wave stimulation occurs, a near absence of viscous ...
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Primary productivity of the phytoplankton in a tropical Brazilian shallow lake: experiments in the lake and in mesocosms
... the lake occurred in the transition periods, when thermal stratification is unstable, and lower PP in the cool season (frequent mixing) and in mid-summer (more stable ...the lake were physical and chemical ...
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LIMNOLOGICAL STUDY OF A PANTANAL SALINE LAKE
... The concentrations of chlorophyll a were among the highest recorded for the most productive systems in the world. In a review of studies on tropical African lakes, Beadle (1974) observed a similar tendency for high ...
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Regionalisation for lake level simulation – the case of Lake Tana in the Upper Blue Nile, Ethiopia
... size, Lake Tana has a large storage capacity that only responds slowly to the various processes of the cli- matic and hydrological ...Annual lake level fluctuations are approximately 1.6 m where lake ...
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Formation of natural gas hydrates in marine sediments 2. Thermodynamic calculations of stability conditions in porous sediments
... If the investigation of pore size distribution by mercury porosimetry is relevant for hydrate, capillary effects in the Blake Ridge sediments may only shift the temperature at th[r] ...
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Historical Changes in Polychlorinated Biphenyls Contaminated Sediments
... surface sediments at four locations in fall ...surface sediments from shallow and depositional habitats in the ...of sediments sampled ranged from 3-5 cm depending on the composition of the sediment ...
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Wind-induced baroclinic response of Lake Constance
... a lake domain with varying topography is transformed to a new domain with constant depth, and this region is once again transformed in the horizontal co-ordinates by using conformal mapping which maps the shore as ...
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