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| Titel |
Changes in polychaete standing stock and diversity on the northern side of Senghor Seamount (NE Atlantic) |
| VerfasserIn |
A. J. Chivers, B. E. Narayanaswamy, P. A. Lamont, A. Dale, R. Turnewitsch |
| 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 ; 10, no. 6 ; Nr. 10, no. 6 (2013-06-03), S.3535-3546 |
| Datensatznummer |
250018268
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| Publikation (Nr.) |
 copernicus.org/bg-10-3535-2013.pdf |
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| Zusammenfassung |
| Interest in seamount research has gathered momentum over the past five years
in an effort to understand the physical, geochemical and biological
characteristics as well as the interconnectedness of seamount ecosystems. The
majority of biological seamount research has concentrated upon the rich and
diverse suspension feeding organisms that dominate the megafauna, such as
gorgonians and antipatharian corals; by comparison there have been few
studies that have investigated the no less enigmatic, but possibly just as
important infauna. To help fill this knowledge gap, the macrofaunal community
was sampled from a total of five stations along a northerly transect
(capturing water depths from ∼130 m to ∼3300 m), on Senghor
Seamount (NE Atlantic). The focus of this study is on the polychaete
communities. Polychaete abundance peaked at the summit and a mid-slope
station (∼1500 m), a pattern mirrored by the biomass values. The
polychaete community along the transect appeared to be particularly diverse,
with 135 species nominally identified to putative species from a total of 954
individuals. A diversity maximum was identified on the upper slope at
∼800 m depth, with species diversity, richness and evenness also all
peaking at this station. Depth is likely to be a significant factor in
determining levels of similarity between stations. |
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