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A comparison of demersal communities in an area closed to trawling with those in adjacent areas open to trawling: A study in the Great Barrier Reef Marine Park, Australia

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dc.contributor Australian Institute Of Marine Science
dc.contributor Commonwealth Scientific & Industrial Research Organisation (csiro)
dc.contributor Australian Inst Marine Sci
dc.contributor Csiro
dc.contributor Australian Institute Of Marine Science (aims) en
dc.contributor.author POINER, I. R.
dc.contributor.author BURRIDGE, C. Y.
dc.contributor.author PITCHER, C. R.
dc.contributor.author HILL, B. J.
dc.contributor.author WASSENBERG, T. J.
dc.date.accessioned 2013-02-28T06:45:39Z
dc.date.accessioned 2013-02-28T06:45:39Z
dc.date.accessioned 2017-03-21T00:56:44Z
dc.date.accessioned 2018-11-01T03:17:09Z
dc.date.available 2013-02-28T06:45:39Z
dc.date.available 2013-02-28T06:45:39Z
dc.date.available 2017-03-21T00:56:44Z
dc.date.available 2018-11-01T03:17:09Z
dc.date.issued 2006-06-01
dc.identifier 7239 en
dc.identifier.citation Burridge CY, Pitcher CR, Hill BJ, Wassenberg T and Poiner IR (2006) A comparison of demersal communities in an area closed to trawling with those in adjacent areas open to trawling: a study in the Great Barrier Reef Marine Park, Australia. Fisheries Research. 79: 64-74. en
dc.identifier.issn 0165-7836
dc.identifier.uri http://epubs.aims.gov.au/11068/7239
dc.description Link to abstract/full text - http://dx.doi.org/10.1016/j.fishres.2005.11.025 en
dc.description.abstract The faunal composition of an extensive area (10,000 km(2)) closed to trawling in the Great Barrier Reef Marine Park, Australia was compared with that in two adjacent areas open to fishing. Sampling was undertaken over 2 years using a dredge and a prawn trawl. For analysis, we split the study area into a northern and a southern section, and compared adjacent pairs of zones open and closed to trawling, after adjusting for a strong cross-shelf longitudinal gradient using sediment and depth data. The median coefficient of variation for the ratio of biomass in adjacent pairs of open and closed zones was around 15% for both sampling devices. However, the difference between open and closed pairs of zones was not consistent either within species or across species. Instead, these differences were consistent with the moderate difference between the northern and southern halves of the study area. Three reasons are proposed for the lack of measurable difference that could be attributed to trawling. Firstly, the level of trawling in the open area has been relatively low and, because of targeting of concentrations of prawns, it has been unevenly distributed leaving extensive areas unfished. This suggests that trawling has not had a major impact on the demersal fauna of the region. Secondly, illegal trawling in the closed area could also have confounded the results of the study, though logbook records suggest the level of this fishing was low and its extent restricted. Thirdly, the complexity of the region as shown by a north-south difference in fauna of the closed area might obscure any effects of fishing. We also suggest that areas with high habitat diversity ranging from complex structured seabed to relatively clear open muddy or sandy plains do not lend themselves to open versus closed studies because of the differential effect of fishing on the various habitats. Crown Copyright (c) 2006 Published by Elsevier B.V. All rights reserved.
dc.description.uri http://dx.doi.org/10.1016/j.fishres.2005.11.025 en
dc.language English
dc.language en en
dc.relation.ispartof Fisheries Research - pages: 79: 64-74 en
dc.relation.ispartof Null
dc.subject Marine Ecosystems
dc.subject Fisheries
dc.subject Shelf
dc.subject Environmental Impacts Of Trawling
dc.subject Disturbance
dc.subject Great Barrier Reef Marine Park
dc.subject Demersal Communities
dc.subject Fish
dc.subject Ecosystem Management
dc.title A comparison of demersal communities in an area closed to trawling with those in adjacent areas open to trawling: A study in the Great Barrier Reef Marine Park, Australia
dc.type journal article en
dc.identifier.doi 10.1016/j.fishres.2005.11.025
dc.identifier.wos WOS:000238401700008


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