Effects of Contaminants on Naiad Mollusks (Unionidae) PDF Download
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Author: Marian E. Havlik Publisher: ISBN: Category : Mollusks Languages : en Pages : 30
Book Description
Although the uptake, storage, and elimination of contaminants by naiad mollusks has been studied, relatively little information is available on toxicity. Contaminants appear to have destroyed some populations directly by exerting toxic effects, or indirectly by causing or contributing to the elimination of essential food organisms or host fish. Often two or more factors appear to work in combination to producethe total stress that adversel affects populations. Naiad mollusks are important indicators of contaminants in the environment; residues in soft tissue indicate recent or current exposure, and residues in shells indicate past exposure.
Author: Marian E. Havlik Publisher: ISBN: Category : Mollusks Languages : en Pages : 30
Book Description
Although the uptake, storage, and elimination of contaminants by naiad mollusks has been studied, relatively little information is available on toxicity. Contaminants appear to have destroyed some populations directly by exerting toxic effects, or indirectly by causing or contributing to the elimination of essential food organisms or host fish. Often two or more factors appear to work in combination to producethe total stress that adversel affects populations. Naiad mollusks are important indicators of contaminants in the environment; residues in soft tissue indicate recent or current exposure, and residues in shells indicate past exposure.
Author: Marian E. Havlik Publisher: ISBN: Category : Mollusks Languages : en Pages : 20
Book Description
Although the uptake, storage, and elimination of contaminants by naiad mollusks has been studied, relatively little information is available on toxicity. Contaminants appear to have destroyed some populations directly by exerting toxic effects, or indirectly by causing or contributing to the elimination of essential food organisms or host fish. Often two or more factors appear to work in combination to producethe total stress that adversel affects populations. Naiad mollusks are important indicators of contaminants in the environment; residues in soft tissue indicate recent or current exposure, and residues in shells indicate past exposure.
Author: Richard C Banks Publisher: ISBN: Category : Vertebrates Languages : en Pages : 96
Book Description
This list includes the names of all Recent species known to occur, or to have occurred, in the geographic areas covered by this report. No distinction is made between resident and migratory species or between those that occur regularl and those of casual or accidental occurrence. Species that are extinct are indicated as well as species whose only occurrence is the result of introduction by man. The list includes the scientific names and English names of taxa from order to species
Author: Marian E. Havlik
Author: Marian E. Havlik
Author: Marian E. Havlik
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Author: U.S. Fish and Wildlife Service
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Author: Richard C Banks