Laudien, Jürgen; Orchard, Julia-Berenice (2012): Counts of benthos communities in Kongsfjorden in 2009 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.753197, Supplement to: Laudien, J; Orchard, J-B (2012): The significance of depth and substratum incline for the structure of a hard bottom sublittoral community in glacial Kongsfjorden (Svalbard, Arctic)—an underwater imagery approach. Polar Biology, 16 pp, https://doi.org/10.1007/s00300-011-1153-4
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Abstract:
In order to reveal the structure of the sparsely known deeper sublittoral hard bottom communities of glacial Kongsfjorden, the macroepibenthos from six depth zones (30-200 m) was analysed. A total of 180 still images derived from 6-h video recorded at the Kongsfjordneset remotely operated vehicle station were assessed quantitatively. Overall 27 mainly suspension-feeding species/taxa were observed. Of these, two-thirds have an arcto-boreal distribution, while the remainder are cosmopolitan. The overall mean epibenthos abundance was 33 ind./m**2 with maximum values at 150 m depth (97.9 ind./m**2). The majority of the taxa inhabited the entire depth range. Encrusting red algae, an unidentified sponge and the sea anemone Urticina eques, characterized the assemblage of the shallow zone. The sea anemones Hormathia spp. were important below 30 m, the Serpulid polychaete Protula tubularia was characteristic for the community below 50 m and the demosponge Haliclona sp. was a key taxon between 100 and 200 m depth. Cluster analysis and non-metrical multidimensional scaling based on abundance data showed differences between the assemblages along the bathymetric gradient, but only in the shallower depths in relation to the substratum surface incline. As surface and tidal current impacts attenuate with increasing depth, there is a gradual trend from robust key species towards more fragile ones (i.e. P. tubularia), in line with the 'Physical control hypothesis'.
Related to:
Orchard, Julia-Berenice (2010): Zonierung und Diversität makroepibenthischer Hartbodengemeinschaften im Kongfjorden (Spitzbergen, Svalbard). Bachelor Thesis, University of Bremen, Germany, 135 pp, hdl:10013/epic.36268.d001
Further details:
Laudien, Jürgen (2014): Sea-bottom video in QuickTime format at ROV station Kongsfjordneset in 2009. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.834613
Project(s):
Bentho-Pelagic Processes @ AWI (AWI_BPP)
Coverage:
Median Latitude: 78.979017 * Median Longitude: 11.486945 * South-bound Latitude: 78.977667 * West-bound Longitude: 11.476867 * North-bound Latitude: 78.980583 * East-bound Longitude: 11.495617
Date/Time Start: 2009-06-09T12:00:00 * Date/Time End: 2009-06-12T12:00:00
Minimum DEPTH, water: 30 m * Maximum DEPTH, water: 200 m
Event(s):
Kongsfjorden_2009 * Latitude: 78.972830 * Longitude: 11.489160 * Date/Time Start: 2009-06-09T00:00:00 * Date/Time End: 2009-06-12T23:59:00 * Location: Kongsfjorden, Spitsbergen, Arctic * Campaign: KOP51_2009 * Method/Device: Remote operated vehicle (ROV)
Comment:
See doi:10.1594/PANGAEA.742768 and doi:10.1594/PANGAEA.761660 for the physical oceanography at time series station Brandal in the Kongsfjorden (Spitsbergen, Arctic). Sea-bed photographs (benthos) from the shelf west of Svalbard along ROV profile HE153/1289-4 can be found at doi:10.1594/PANGAEA.320062.
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
5872 data points
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