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Ecological effects of marine protected areas on rocky reef communities - a continental-scale analysis

Citation

Edgar, GJ and Stuart-Smith, RD, Ecological effects of marine protected areas on rocky reef communities - a continental-scale analysis, Marine Ecology Progress Series, 388, (August) pp. 51-62. ISSN 0171-8630 (2009) [Refereed Article]


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Copyright Statement

Copyright 2009 Inter-Research.

Official URL: http://www.int-res.com/abstracts/meps/v388/p51-62/

DOI: doi:10.3354/meps08149

Abstract

Data compiled by volunteer divers were utilised in a continental-scale investigation of ecological differences between reefs in no-take sanctuary zones in marine protected areas (MPAs) and adjacent fished zones. In a validation analysis, volunteer-generated data were found to be comparable to data obtained by scientific dive teams for all metrics investigated: estimated total number of species, total faunal abundance, mean fish size, and faunal composition of species sighted along transects. Variation between individual divers within volunteer and professional groups also contributed little to total estimated variance between transects compared to residual variation between replicate transects, variation between sites, and variation between regions studied. Sites in 11 MPAs distributed around 5000 km of the Australian coastline had significantly more large (>30 cm) fishes and total fish biomass than nearby fished reference sites. For the older MPAs, fishes belonging to the largest size class (80 cm) were observed approximately 10 times more often in sanctuary zones than in fished zones, while fishes in the smallest size class (2.5 cm) occurred at densities approximately 4 times higher in fished zones than in sanctuary zones. Results of our empirical field surveys contrast in several respects with outcomes of published meta-analyses. No overall differences in fish densities were evident between sanctuary zones and fished zones. The response of fish species richness to protection varied significantly between different MPAs, while invertebrate density and species richness were both significantly lower in sanctuary zones than in fished zones.

Item Details

Item Type:Refereed Article
Keywords:Effects of fishing Marine reserve MPA Fishes Macroinvertebrates Species richness Volunteer monitoring Australia
Research Division:Environmental Sciences
Research Group:Environmental Science and Management
Research Field:Conservation and Biodiversity
Objective Division:Environment
Objective Group:Ecosystem Assessment and Management
Objective Field:Ecosystem Assessment and Management of Marine Environments
Author:Edgar, GJ (Professor Graham Edgar)
Author:Stuart-Smith, RD (Dr Rick Stuart-Smith)
ID Code:60513
Year Published:2009
Web of Science® Times Cited:75
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2010-02-09
Last Modified:2015-02-10
Downloads:346 View Download Statistics

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