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Showing 1 to 4 of 4 for “"bottom sampler"”.
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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
… Samplings were carried out using a van-Veen bottom sampler, and were spaced about 15 days to 1 month, resulting in 13 simultaneous samplings in each depth, with 6 replicates each. Communities were significantly (p < 0.05) different between depths along the entire study, although they showed …
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Analysis of the structure of the immature insect segment of a stream riffle community
… from July, 1972 through June 1973 using 1m² bottom sampler from a rifle in Sinking Creek in Giles County, Virginia to analyze the structure of the immature insect segment of the community. The following characteristics of the insect segment of the community were examined: life histories of …
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Ecological Studies on Benthic Macroinvertebrates in Lowland Rivers in Relation to Water Quality
… The Standard Aufwuchs Unit (SAufU) colonization sampler was found generally to be the best sampler for monitoring purposes, as it yielded more species-rich samples than the grab. Hand-nets were only effective in stands of macrophytes. The Ponar grab was the best bottom sampler for direct …
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Role of sediment oxygen demand on the oxygen balance in the North Shore Channel of Chicago
… of the channel and thus improve water quality. A bottom sampler used to measure SOD was designed and constructed at the University of Illinois at Urbana-Champaign. The SOD chamber encloses a controlled volume of water over a specific surface area and measures the DO within the water column over …