ISSN:
1573-5117
Keywords:
copper and zinc contamination
;
invertebrate drift
;
Tasmania
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Drifting invertebrates were collected upstream of, at, and downstream of the input of metal contaminated water into the previously unpolluted King River in western Tasmania. In the upstream section the drift fauna showed characteristics similar to those observed by other workers with a marked nocturnal peak. Changes in drift rates at the site of input were observed and it is hypothesized that mayfly nymphs, and possibly other animals, respond to the change in water quality by leaving the water column and randomly searching the substrate for clean water. Most nymphs re-enter the drift in a current of clean water which was displaced towards the opposing bank by the entry of contaminated water. This re-entry of animals into the drift occurs some four hours after the main nocturnal peak in drift rates.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00018287
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