Document Type

Journal Article

Department/Unit

Department of Biology

Title

Community-level destruction of hard corals by the sea urchin Diadema setosum

Language

English

Abstract

We determined the spatial pattern of hard coral damage due to corallivory and bioerosion by the sea urchin Diadema setosum Leske in Hong Kong waters. Coral damage was common at the northeastern sites, with 23.7 - 90.3% colonies being either collapsed or severely damaged with >25% tissue loss. Many genera of corals were impacted by the sea urchin but the damage was most obvious for the structure forming genus Platygyra. The percentage of severely damaged and collapsed coral had significant positive correlation with the abundance of D. setosum, which ranged from 0.01 to 5.2 individuals per coral head or 0.1 - 21.1 individuals m-2 across the study sites. Remedial management actions such as sea urchin removal are urgently needed to save these fringing coral communities. © 2013 Elsevier Ltd.

Keywords

Bioerosion, Coral, Diadema, Platygyra, Predation, Sea urchin

Publication Date

2014

Source Publication Title

Marine Pollution Bulletin

Volume

85

Issue

2

Start Page

783

End Page

788

Publisher

Elsevier

DOI

10.1016/j.marpolbul.2013.12.012

ISSN (print)

0025326X

ISSN (electronic)

18793363

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