Colony size-frequency distribution of pocilloporid juvenile corals along a natural environmental gradient in the Red Sea

Diego Lozano-Cortés, Michael L. Berumen

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Coral colony size-frequency distributions can be used to assess population responses to local environmental conditions and disturbances. In this study, we surveyed juvenile pocilloporids, herbivorous fish densities, and algal cover in the central and southern Saudi Arabian Red Sea. We sampled nine reefs with different disturbance histories along a north–south natural gradient of physicochemical conditions (higher salinity and wider temperature fluctuations in the north, and higher turbidity and productivity in the south). Since coral populations with negatively skewed size-frequency distributions have been associated with unfavorable environmental conditions, we expected to find more negative distributions in the southern Red Sea, where corals are potentially experiencing suboptimal conditions. Although juvenile coral and parrotfish densities differed significantly between the two regions, mean colony size and size-frequency distributions did not. Results suggest that pocilloporid colony size-frequency distribution may not be an accurate indicator of differences in biological or oceanographic conditions in the Red Sea.
Original languageEnglish (US)
Pages (from-to)546-552
Number of pages7
JournalMarine Pollution Bulletin
Volume105
Issue number2
DOIs
StatePublished - Nov 3 2015

ASJC Scopus subject areas

  • Oceanography
  • Pollution
  • Aquatic Science

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