Meiofauna sediment relations in leeward slope turf algae of Heron Island reef

Logan, D., Townsend, K. A., Townsend, K. and Tibbetts, I. R. (2008) Meiofauna sediment relations in leeward slope turf algae of Heron Island reef. Hydrobiologia, 610 1: 269-276. doi:10.1007/s10750-008-9442-9


Author Logan, D.
Townsend, K. A.
Townsend, K.
Tibbetts, I. R.
Title Meiofauna sediment relations in leeward slope turf algae of Heron Island reef
Journal name Hydrobiologia   Check publisher's open access policy
ISSN 0018-8158
Publication date 2008-05-01
Year available 2008
Sub-type Article (original research)
DOI 10.1007/s10750-008-9442-9
Volume 610
Issue 1
Start page 269
End page 276
Total pages 10
Editor Koen Martens
Place of publication Netherlands
Publisher Springer Netherlands
Language eng
Subject C1
9605 Ecosystem Assessment and Management
050204 Environmental Impact Assessment
060205 Marine and Estuarine Ecology (incl. Marine Ichthyology)
Abstract As part of studies investigating the influence of grazers on reef meiofauna, we assessed the density, composition and richness of meiofauna (retained on a 100-mu m sieve) on the leeward reef slope of Heron Reef, GBR, Australia using an airlift vacuum sampling device. Estimates of meiofauna densities ranged between 40 individuals 10 cm(-2) and 290 individuals 10 cm(-2), which is considerably lower than many estimates from carbonate sediments and hard substrates from other reefs and marine habitats. The 17 taxa of meiofauna were dominated by harpacticoid copepods (40%) and nematodes (32%). Varying sediment load within algal turfs explained 37% of variation of meiofauna density. A model is proposed in which increased shelter afforded by high living coral cover reduces meiofaunal losses from grazing and increases sediment loads, balanced by areas of low coral cover in which sedimentation rates are lower and grazing rates higher. At none of the four sites did major differences in abundance occur between November and March sampling events. Together these observations suggest that epilithic meiofaunal communities are generally spatially and temporally predictable at small scales in this reef system, indicating that their ecological services are similarly conservative.
Keyword Epilithic Algal Community
Grazers
Settlement
Predation
Vacuum
Sampling
Coral Reef
Great-barrier-reef
Coral-reef
Fringing-reef
Herbivory
Habitat
Communities
Patterns
Abundance
Fishes
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
School of Biomedical Sciences Publications
Ecology Centre Publications
 
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Created: Wed, 30 Jul 2008, 02:20:24 EST