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Infaunal Benthic Communities from the Inner Shelf off Southwestern Africa Are Characterised by Generalist Species.

Steffani N, Sedick S, Rogers J, Gibbons MJ - PLoS ONE (2015)

Bottom Line: Although the fauna was dominated by polychaetes and peracarid crustaceans, patterns in community structure could only weakly be explained by the measured environment (~35%).This is attributed to the generalist nature of the species recovered, which were widely distributed amongst different sediments, water-depths and latitudes.The fauna is dominated by species that enjoy a widespread regional and global distribution and is characterised by relatively low diversity, which is discussed.

View Article: PubMed Central - PubMed

Affiliation: 21 Skippers End, Zeekoevlei, Cape Town, South Africa.

ABSTRACT
Infaunal communities of benthic macro-organisms (≥ 1mm length) were studied from 81 samples collected across nine sites to the north and south of the Orange River in the Benguela upwelling ecosystem in 2003, with a view to describing communities and understanding the drivers of regional community structure, as well as to document diversity and to examine geographic affinities. Although the fauna was dominated by polychaetes and peracarid crustaceans, patterns in community structure could only weakly be explained by the measured environment (~35%). This is attributed to the generalist nature of the species recovered, which were widely distributed amongst different sediments, water-depths and latitudes. The fauna is dominated by species that enjoy a widespread regional and global distribution and is characterised by relatively low diversity, which is discussed.

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Map of sampling region.The position of the different samples collected from the nine sites during 2003 (made using ArcGIS, Version 10.2 using data from [26]). Place names mentioned in the text, and bathymetry (m) also shown. Gravel-sand-mud, and mud-silt-clay ternary diagrams for each site also shown.
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pone.0143637.g001: Map of sampling region.The position of the different samples collected from the nine sites during 2003 (made using ArcGIS, Version 10.2 using data from [26]). Place names mentioned in the text, and bathymetry (m) also shown. Gravel-sand-mud, and mud-silt-clay ternary diagrams for each site also shown.

Mentions: The study area is located over the inner shelf north and south of the Orange River, the latter marking the political boundary between Namibia and South Africa (Fig 1). Within this area, nine sites were selected for investigation (Fig 1) The sedimentary environment of the area has been described by [22–24], whilst the physical and chemical environment have been summarised respectively by [25] and [13].


Infaunal Benthic Communities from the Inner Shelf off Southwestern Africa Are Characterised by Generalist Species.

Steffani N, Sedick S, Rogers J, Gibbons MJ - PLoS ONE (2015)

Map of sampling region.The position of the different samples collected from the nine sites during 2003 (made using ArcGIS, Version 10.2 using data from [26]). Place names mentioned in the text, and bathymetry (m) also shown. Gravel-sand-mud, and mud-silt-clay ternary diagrams for each site also shown.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4664413&req=5

pone.0143637.g001: Map of sampling region.The position of the different samples collected from the nine sites during 2003 (made using ArcGIS, Version 10.2 using data from [26]). Place names mentioned in the text, and bathymetry (m) also shown. Gravel-sand-mud, and mud-silt-clay ternary diagrams for each site also shown.
Mentions: The study area is located over the inner shelf north and south of the Orange River, the latter marking the political boundary between Namibia and South Africa (Fig 1). Within this area, nine sites were selected for investigation (Fig 1) The sedimentary environment of the area has been described by [22–24], whilst the physical and chemical environment have been summarised respectively by [25] and [13].

Bottom Line: Although the fauna was dominated by polychaetes and peracarid crustaceans, patterns in community structure could only weakly be explained by the measured environment (~35%).This is attributed to the generalist nature of the species recovered, which were widely distributed amongst different sediments, water-depths and latitudes.The fauna is dominated by species that enjoy a widespread regional and global distribution and is characterised by relatively low diversity, which is discussed.

View Article: PubMed Central - PubMed

Affiliation: 21 Skippers End, Zeekoevlei, Cape Town, South Africa.

ABSTRACT
Infaunal communities of benthic macro-organisms (≥ 1mm length) were studied from 81 samples collected across nine sites to the north and south of the Orange River in the Benguela upwelling ecosystem in 2003, with a view to describing communities and understanding the drivers of regional community structure, as well as to document diversity and to examine geographic affinities. Although the fauna was dominated by polychaetes and peracarid crustaceans, patterns in community structure could only weakly be explained by the measured environment (~35%). This is attributed to the generalist nature of the species recovered, which were widely distributed amongst different sediments, water-depths and latitudes. The fauna is dominated by species that enjoy a widespread regional and global distribution and is characterised by relatively low diversity, which is discussed.

Show MeSH