A comparison of threats, vulnerabilities and management approaches in global seagrass bioregions

Grech, Alana, Chartrand-Miller, Katie, Erftemeijer, Paul, Fonseca, Mark, McKenzie, Len, Rasheed, Michael, Taylor, Helen, and Coles, Rob (2012) A comparison of threats, vulnerabilities and management approaches in global seagrass bioregions. Environmental Research Letters, 7 (2). pp. 1-8.

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Abstract

Global seagrass habitats are threatened by multiple anthropogenic factors. Effective management of seagrasses requires information on the relative impacts of threats; however, this information is rarely available. Our goal was to use the knowledge of experts to assess the relative impacts of anthropogenic activities in six global seagrass bioregions. The activities that threaten seagrasses were identified at an international seagrass workshop and followed with a web-based survey to collect seagrass vulnerability information. There was a global consensus that urban/industrial runoff, urban/port infrastructure development, agricultural runoff and dredging had the greatest impact on seagrasses, though the order of relative impacts varied by bioregion. These activities are largely terrestrially based, highlighting the need for marine planning initiatives to be co-ordinated with adjacent watershed planning. Sea level rise and increases in the severity of cyclones were ranked highest relative to other climate change related activities, but overall the five climate change activities were ranked low and experts were uncertain of their effects on seagrasses. The experts' preferred mechanism of delivering management outcomes were processes such as policy development, planning and consultation rather than prescriptive management tools. Our approach to collecting expert opinion provides the required data to prioritize seagrass management actions at bioregional scales.

Item ID: 21733
Item Type: Article (Refereed Research - C1)
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ISSN: 1748-9326
Funders: Department of Primary Industries and Fisheries (QLD), ARC CoE for Coral Reef Studies
Date Deposited: 08 May 2012 05:49
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050202 Conservation and Biodiversity @ 100%
SEO Codes: 96 ENVIRONMENT > 9609 Land and Water Management > 960903 Coastal and Estuarine Water Management @ 100%
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