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Short term monitoring of biotic change in Tasmanian marine reserves


Edgar, GJ and Barrett, NS, Short term monitoring of biotic change in Tasmanian marine reserves, Journal of Experimental Marine Biology and Ecology, 213, (2) pp. 261-279. ISSN 0022-0981 (1997) [Refereed Article]

DOI: doi:10.1016/S0022-0981(96)02769-4


Fishes, large invertebrates and macroalgae inside four marine reserves and at associated external reference sites off the eastern Tasmanian coast were censused between 1992 and 1993 shortly after the declaration of the reserves. Changes in several population parameters during the first year of protection in the largest Maria Island Marine Reserve were examined using two different ANOVA designs. The densities of rock lobsters and sea urchins and the mean sizes of wrasse, leatherjackets, abalone and rock lobsters all increased within the reserve relative to outside over the first year; however, only the increases in density of sea urchins and mean abalone size were statistically significant at the 5% level. The census methodology and statistical techniques nevertheless were considered sufficiently sensitive to reveal any long term change following future censuses. A doubling in population numbers of most large fishes and invertebrates, or a 10% increase in the mean size of animals, is required to indicate that significant change has occurred.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and estuarine ecology (incl. marine ichthyology)
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - wild caught
Objective Field:Fisheries - wild caught not elsewhere classified
UTAS Author:Edgar, GJ (Professor Graham Edgar)
UTAS Author:Barrett, NS (Associate Professor Neville Barrett)
ID Code:11874
Year Published:1997
Web of Science® Times Cited:81
Deposited By:Zoology
Deposited On:1997-08-01
Last Modified:2011-08-12

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