Distribution patterns of tidepool fishes on a tropical flat reef

Macieira, Raphael M. and Joyeux, Jean-Christophe (2011) Distribution patterns of tidepool fishes on a tropical flat reef. Fishery Bulletin, 109(3), pp. 305-315.

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Rockpools on a tropical f lat reef off the southeastern coast of Brazil were sampled to determine the influence of pool morphometry and water characteristics on fish community structure. The pool closest to the inner fringe of the reef had lower salinity and higher temperature due to inflow of groundwater. The other pools varied only with respect to their morphometric characteristics, algal cover, and bottom composition. Species with a strong affinity for estuarine- like waters characterized the pool closest to the beach and distinguished its fish community from that of the other pools. Instead of being strongly structured by the physicochemical setting and position in the reef, fish communities of the other pools were determined by behavioral preferences and intra- and interspecific interactions. Differences in community structure were related to pool size (the larger sizes permitting the permanency of schooling species), to algal cover (which allowed camouflage for large predatory species), to bottom composition (which provided substrate for turf flora available to territorial herbivores), and to ecological effects (e.g., competition, territoriality, and predation). Although distribution patterns of tidepool fishes have previously been related to the availability of niches, independent of pool position in the reef, our results show synergistic interactions between water properties, presence or absence of niches, and ecological relationships in structuring tidepool fish communities.

Item Type: Article
Title: Distribution patterns of tidepool fishes on a tropical flat reef
Personal Creator/Author:
Macieira, Raphael M.
Joyeux, Jean-Christophe
Refereed: Yes
Journal or Publication Title: Fishery Bulletin
Volume: 109
Number: 3
Page Range: pp. 305-315
Date: 2011
ISSN: 0090-0656
Issuing Agency: United States National Marine Fisheries Service
Subjects: Biology
Item ID: 8709
Depositing User: Patti M. Marraro
Date Deposited: 07 Jun 2012 14:52
Last Modified: 07 Jun 2012 14:52
URI: http://aquaticcommons.org/id/eprint/8709

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