Dataset

Port Curtis portwide macrobenthos study

Central Queensland University
David R Currie (Aggregated by) Kirsty J Small (Aggregated by)
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://hdl.cqu.edu.au/10018/60241&rft.title=Port Curtis portwide macrobenthos study&rft.identifier=http://hdl.cqu.edu.au/10018/60241&rft.publisher=Central Queensland University&rft.description=Spatial patterns in benthic infaunal community structure of Port Curtis estuary (north-eastern Australia) were determined from quantitative grab samples and examined in relation to environmental variables. A total of 149 riverine, estuarine and open coastal stations were sampled during the survey, and 5744 individuals and 466 species dentified. Filter-feeding organisms (primarily polychaetes, molluscs and crustaceans) dominated the bedforms, and accounted for 50% of the total species abundance and 30% of the total species richness. Most taxa were uncommon, and 98% of species individually represented less than 2% of the total abundance. Distributional patterns in total species richness and abundance were highly correlated, and both parameters varied significantly with sediment structure. Numbers of species and individuals were typically highest in coarse-sand and gravel sediments, and lowest in fine, well-sorted, sands. Cluster analysis of species abundance data revealed nine community groupings characterised by small species subsets with restricted distributions. These groupings were found to be primarily related to measures of depth, salinity, dissolved oxygen and sediment structure. Not all variation in community structure was explained by these environmental variables, and it is likely that other unmeasured factors play an important role in determining benthic faunal composition in the estuary.&rft.creator=Kirsty J Small&rft.creator=David R Currie&rft.date=2011&rft_rights=This work is published under the terms of a Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Australia license&rft_subject=Tba.&rft_subject=770306 Integrated (Ecosystem) Assessment and Management&rft_subject=270702 Marine and Estuarine Ecology (Incl. Marine Ichthyology)&rft_subject=Benthic Animals&rft_subject=Estuarine Ecology&rft_subject=Marine Ecology&rft_subject=960507 Ecosystem Assessment and Management of Marine Environments.&rft_subject=9605 Ecosystem Assessment and Management.&rft_subject=96 Environment.&rft_subject=Marine and Estuarine Ecology (Incl. Marine Ichthyology)&rft_subject=Biological Sciences&rft_subject=Ecology&rft_subject=0602 Ecology.&rft_subject=06 Biological Sciences.&rft_subject=04 Earth Sciences.&rft_subject=0405 Oceanography.&rft_subject=040599 Oceanography Not Elsewhere Classified.&rft_subject=Benthos -- Infauna -- Natural Disturbance&rft.type=dataset&rft.language=English Go to Data Providers

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Spatial patterns in benthic infaunal community structure of Port Curtis estuary (north-eastern Australia) were determined from quantitative grab samples and examined in relation to environmental variables. A total of 149 riverine, estuarine and open coastal stations were sampled during the survey, and 5744 individuals and 466 species dentified. Filter-feeding organisms (primarily polychaetes, molluscs and crustaceans) dominated the bedforms, and accounted for 50% of the total species abundance and 30% of the total species richness. Most taxa were uncommon, and 98% of species individually represented less than 2% of the total abundance. Distributional patterns in total species richness and abundance were highly correlated, and both parameters varied significantly with sediment structure. Numbers of species and individuals were typically highest in coarse-sand and gravel sediments, and lowest in fine, well-sorted, sands. Cluster analysis of species abundance data revealed nine community groupings characterised by small species subsets with restricted distributions. These groupings were found to be primarily related to measures of depth, salinity, dissolved oxygen and sediment structure. Not all variation in community structure was explained by these environmental variables, and it is likely that other unmeasured factors play an important role in determining benthic faunal composition in the estuary.