An intertidal rock pool at Seal Rocks, New South Wales, was repeatedly defaunated during summer or autumn between 1969 and 1987 using the ichthyocide rotenone. The fish assemblage was of moderate diversity, dominated by juveniles of subtidal species. Changes in the composition and numbers of species of this assemblage were assessed on both a long-term and short-term basis. The long-term study covered a period of 19 years; the short-term study was from March to May 1986. While considerable variation was observed in the numbers of the component species over the long-term collections, species composition remained relatively constant. In short-term studies recolonization of the area was initially rapid. Initial recolonization was dominated by intertidal species, such as Torquigener pleurogramrna, while subtidal species were more numerous in the long-term. This study is a preliminary observation of the fauna composition in one selected tide pool subjected to repeated defaunation.
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March 17 2014
Recolonization by fishes of a rocky intertidal pool following repeated defaunation
R. Lardner;
R. Lardner
1
School of Biological Sciences, Macquarie University, NSW. 2109
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Walter Ivantsoff;
Walter Ivantsoff
1
School of Biological Sciences, Macquarie University, NSW. 2109
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Lucy E. L. M. Crowley
Lucy E. L. M. Crowley
1
School of Biological Sciences, Macquarie University, NSW. 2109
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Australian Zoologist (1993) 29 (1-2): 85–92.
Citation
R. Lardner, Walter Ivantsoff, Lucy E. L. M. Crowley; Recolonization by fishes of a rocky intertidal pool following repeated defaunation. Australian Zoologist 1 August 1993; 29 (1-2): 85–92. doi: https://doi.org/10.7882/AZ.1993.008
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