FRESHWATER MEIOFAUNA EPUB DOWNLOAD
PDF | On Jan 1, , Pamela Silver and others published The small scale ecology of freshwater meiofauna. MEIOFAUNA IN FRESHWATER: CURRENT KNOWLEDGE ON. NEMATODES. Abebe Eyualem. Department of Biology, Elizabeth City State University. Alpha and beta diversity of freshwater meiofauna at different spatial scales in a Neotropical lotic system. T. Q. Araújo. A,B., H. H. Checon. C.
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|Published:||21 April 2016|
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The second section then takes an integrated approach to review the current state-of-play in meiofaunal ecological research in freshwaters, addressing important issues, such as the importance of meiofaunal taxa in the trophic dynamics of freshwater ecosystems and the process underpinning freshwater meiofauna distribution patterns observed in meiofaunal assemblages.
Two random samples were collected in each section. Non-randomness patterns were observed, especially at the lowest and highest freshwater meiofauna scales, showing the effects of local intraspecific aggregation and environmental variability among areas.
There are two main extraction methodologies.
The first, decantation, works freshwater meiofauna with coarse sediments. Samples are shaken in an excess of water, the sediment is briefly allowed to settle and the meiofauna filtered off.
The second methodology, the flotation technique, works best with finer sediments where the mass of the sediment particles freshwater meiofauna close to that of the meiofauna.
The best solution to use is the colloidal silica, Ludox.
The sample is stirred into the Ludox solution and left freshwater meiofauna settle for 40 min, after which the meiofauna are filtered out. In fine sediments, extraction efficiency is improved with centrifugation.
Because of the strong binding of Cd to sediment particles, measured Cd pore-water concentrations never freshwater meiofauna Regarding nematodes, species of bacterivorous taxa Daptonema, Eumonhystera decreased, whereas species of predacious and omnivorous taxa Mononchus, Dorylaimus, and Ironus increased in dominance in microcosms of the highest Cd concentration.