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| Titel |
The influence of the geomorphological and sedimentological settings on the distribution of epibenthic assemblages on a flat topped hill on the over-deepened shelf of the western Weddell Sea (Southern Ocean) |
| VerfasserIn |
B. Dorschel, J. Gutt, D. Piepenburg, M. Schröder, J. E. Arndt |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 11, no. 14 ; Nr. 11, no. 14 (2014-07-21), S.3797-3817 |
| Datensatznummer |
250117518
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| Publikation (Nr.) |
 copernicus.org/bg-11-3797-2014.pdf |
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| Zusammenfassung |
| Epibenthos communities play an important role in the marine ecosystems of the
Weddell Sea. Information on the factors controlling their structure and
distribution are, however, still rare. In particular, the interactions between
environmental factors and biotic assemblages are not fully understood.
Nachtigaller Hill, a newly discovered seabed structure on the over-deepened
shelf of the northwest Weddell Sea (Southern Ocean), offers a unique site to
study these interactions in a high-latitude Antarctic setting. Based on
high-resolution bathymetry and georeferenced biological data, the effect of the
terrain and related environmental parameters on the epibenthos was assessed.
At Nachtigaller Hill, both geomorphological and biological data showed
complex distribution patterns, reflecting local processes such as iceberg
scouring and locally amplified bottom currents. This variability was also
generally reflected in the variable epibenthos distribution patterns although
statistical analyses did not show strong correlations between the selected
environmental parameters and species abundances. By analysing the
interactions between environmental and biological patterns, this study
provides crucial information towards a better understanding of the factors
and processes that drive epibenthos communities on the shelves of the Weddell
Sea and probably also on other Antarctic shelves. |
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