Journal
ICES JOURNAL OF MARINE SCIENCE
Volume 80, Issue 6, Pages 1594-1605Publisher
OXFORD UNIV PRESS
DOI: 10.1093/icesjms/fsad086
Keywords
acoustic surveys; conservation ecology; edge effects; marine protected areas; MPA spatial efficiency; spillover; towed-diver survey; underwater visual censuses
Categories
Ask authors/readers for more resources
This study examined the effects of a no-take marine protected area in the Eastern Mediterranean on fish populations using three survey methods. The results showed a reduction in fish biomass along the periphery of the protected area, indicating the presence of an edge effect. However, the study did not find evidence of biotic resistance to non-indigenous species within the protected area. These findings highlight the importance of continuous monitoring of marine protected areas to understand their effectiveness.
Because marine protected areas (MPAs) are not equally effective across their areas, monitoring should progress from dichotomic (within vs. outside) to a finer spatial resolution. Here, we examine the effect of an Eastern Mediterranean no-take MPA on fishes across the MPA and into fished areas, using three methods: underwater visual censuses, acoustic surveys, and towed-diver surveys. The Eastern Mediterranean includes non-indigenous species, so the effect of the MPA was also evaluated for its resistance to invasion. The fine-scale analysis revealed ecological phenomena that could not be captured by dichotomic sampling, such as the edge effect, a reduction of fish biomass along the MPA periphery. Despite their differences, all three methods revealed similar spatial patterns. The fine-scale analysis did not support a biotic resistance of the MPA to non-indigenous species. Our study supports the prevalence of edge effects even in well-enforced no-take MPAs and highlights the need for continuous monitoring to reveal these patterns.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available