Displacement effects of heavy human use on coral reef predators within the Molokini Marine Life Conservation District.

Abstract:

:The impact of marine ecotourism on reef predators is poorly understood and there is growing concern that overcrowding in Marine Protected Areas (MPAs) may disturb the species that these areas were established to protect. To improve our understanding of this issue, we used acoustic telemetry to examine the relationship between human activity at the Molokini Marine Life Conservation District (MLCD) and the habitat use of five reef-associated predators (Caranx melampygus, Caranx ignobilis, Triaenodon obesus, Carcharhinus amblyrhynchos, and Aprion virscens). During peak hours of human use, there was a negative relationship (R2=0.77, P<0.001) between the presence of bluefin trevally (Caranx melampygus) and vessels in subzone A. No other species showed strong evidence of this relationship. However, our results suggest that during this time, the natural ecosystem function that the reserve was established to protect may be compromised and overcrowding should be considered when managing MPAs.

journal_name

Mar Pollut Bull

authors

Filous A,Friedlander AM,Koike H,Lammers M,Wong A,Stone K,Sparks RT

doi

10.1016/j.marpolbul.2017.06.032

subject

Has Abstract

pub_date

2017-08-15 00:00:00

pages

274-281

issue

1-2

eissn

0025-326X

issn

1879-3363

pii

S0025-326X(17)30511-8

journal_volume

121

pub_type

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