Global ETD Search
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Showing 1 to 4 of 4 for “"Freshwater gastropods"”.
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The structural and functional dynamics of selected species -populations of freshwater snails:towards a systems approach
The structural and functional dynamics of freshwater gastropods at Malham Tarn are examined and detailed information is presented with regards to two littoral species, Ancylus fluviatilis (Mull.)and Planorbis contortus(Linn.), occupying a semi-isolated part of the Tarn. At all levels, from whole …
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Assessing the use of Viviparus georgianus snails as a means for biomanipulation of cyanobacterial species Microcystis aeruginosa
… included only herbivorous fish and zooplankton. Freshwater gastropods are diverse and abundant, and can be used in biomanipulation because they are easily collected and transported. Specifically, the freshwater snail species Viviparus georgianus has demonstrated filter-feeding characteristics and …
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Current and historic freshwater mollusk distributions of the upper Coosa River Basin
… Research Institute (TNARI) survey activities of freshwater mollusks within the upper Coosa River basin (UCRB) from 1998 to 2003. Survey results of 4 different TNARI studies, a total of 515 separate collections, are presented. My component of the study examined 231 sites primarily in the …
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Investigating factors within the parental environment that influence the fitness of a freshwater gastropod species and their sensitivity to metal exposure
To effectively assess and manage the risks posed by chemicals in the environment, toxicological data must accurately represent the adverse effects that may occur in environmentally relevant exposure scenarios. An increasing weight of evidence suggests that certain chemicals can cause lasting …