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- W2183665420 abstract "Marine Protected Areas (MPAs) are internationally recognised as a significant spatial management and cost-effective strategy to restore and conserve the marine ecosystems structure and function from human impact. MPAs have been declared with the aim to address a single or a set of management objectives in response to anthropogenic threats, such as fishing, which can have repercussions on biodiversity through indirect interactions or top-down control within an ecosystem or across ecosystems where consumers migrate to forage. However, this indirect impact of fishing remains poorly understood, and as a consequence, the effectiveness of MP As in conserving those ecological processes and broader biodiversity is also poorly understood. Therefore, this study investigated the potential effects of sanctuary zones (no-take MPAs) on higher-order consumers and their effects on benthic assemblage structure both on the reef and in adjacent seagrass meadows. Consumer assemblages were examined using underwater visual census (UVC) on reefs and seagrass meadows at a range of sites in sanctuary and fished zones in Marmion Marine Park (MMP) and Rottnest Island Marine Reserve (RIMP) over three seasons between July 2009 and March 2010. Epibenthic fauna and flora were also sampled using quadrats on reefs and at set distances away from reefs in adjacent Amphibolis seagrass meadows over the same period. Sanctuary zones had higher mean total abundance and biomass of fish compared to adjacent fished zones, and while not significant, there was also a trend of higher means rock lobsters abundance in sanctuary zones. However, there was a high degree of variability among sites nested in zone, and among seasons. Kingston Reefs sanctuary zone contained the highest rock lobster and fish abundance, biomass, and species richness across all seasons. In addition, there was a trend of decreasing mean abundance, biomass, and species richness of fish with increasing distance away from the reef in Amphibolis meadows. In terms of epibenthic fauna and flora assemblages, there was no significant difference in their abundances and taxa richness between zones, but as with consumers, there was high variability among sites within zone and among seasons. As sanctuary zones" @default.
- W2183665420 created "2016-06-24" @default.
- W2183665420 creator A5032539353 @default.
- W2183665420 date "2010-01-01" @default.
- W2183665420 modified "2023-09-27" @default.
- W2183665420 title "Do different levels of fishing pressure, through spatial management, influence communities and ecological interactions in seagrass meadows in South Western Australia?" @default.
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