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  • PANGAEA  (2)
  • 2005-2009  (2)
  • 1990-1994
  • 1955-1959
  • 1910-1914
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  • 1
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    Abundance and characteristics of Polychaeta taxa and associated sediment during POLARSTERN campaign ANT-XXII/3 (ANDEEP-IIII) (2009)
    PANGAEA
    In:  Supplement to: Schüller, Myriam; Ebbe, Brigitte; Wägele, Johann-Wolfgang (2009): Community structure and diversity of polychaetes (Annelida) in the deep Weddell Sea (Southern Ocean) and adjacent basins. Marine Biodiversity, 39(2), 95-108, https://doi.org/10.1007/s12526-009-0009-4
    Details
    Publication Date: 2023-10-28
    Description: During the austral summer of 2005, the Weddell deep sea and adjacent basins were sampled in the course of the ANDEEP III project. In this study, 19 epibenthic-sledge stations are analyzed, with a focus on species diversity and distribution patterns of polychaetes. The polychaete fauna of the deep Southern Ocean has been found to be similarly speciose and diverse compared with deep-sea basins worldwide. Also, in depths below 2,000 m many polychaete species do not seem to be endemic for certain areas but are rather far spread within the Southern Ocean and beyond. Therefore, ongoing faunal exchanges between adjacent basins, even beyond the Antarctic convergence, are strongly suggested, ruling out a general isolation of the Southern Ocean deep-sea benthos. Driving forces behind species distribution patterns were investigated. The findings indicate that polychaete species' distribution in the Southern Ocean deep sea is rather dependent on local environment than depths.
    Keywords: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; SPP1158
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
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    (Tables 1, 3) Details of Agassiz trawl stations and numbers of specimens per macro- and megazoobenthic taxon collected during POLARSTERN cruise ANT-XXII/3 (ANDEEP III) (2007)
    PANGAEA
    In:  Supplement to: Linse, Katrin; Brandt, Angelika; Bohn, Jens M; Danis, Bruno; De Broyer, Claude; Ebbe, Brigitte; Heterier, Vincent; Janussen, Dorte; López-González, Pablo José; Schüller, Myriam; Schwabe, E; Thomson, Michael (2007): Macro- and megabenthic assemblages in the bathyal and abyssal Weddell Sea (Southern Ocean). Deep Sea Research Part II: Topical Studies in Oceanography, 54(16-17), 1848-1863, https://doi.org/10.1016/j.dsr2.2007.07.011
    Details
    Publication Date: 2023-10-28
    Description: The assemblages inhabiting the continental shelf around Antarctica are known to be very patchy, in large part due to deep iceberg impacts. The present study shows that richness and abundance of much deeper benthos, at slope and abyssal depths, also vary greatly in the Southern and South Atlantic oceans. On the ANDEEP III expedition, we deployed 16 Agassiz trawls to sample the zoobenthos at depths from 1055 to 4930 m across the northern Weddell Sea and two South Atlantic basins. A total of 5933 specimens, belonging to 44 higher taxonomic groups, were collected. Overall the most frequent taxa were Ophiuroidea, Bivalvia, Polychaeta and Asteroidea, and the most abundant taxa were Malacostraca, Polychaeta and Bivalvia. Species richness per station varied from 6 to 148. The taxonomic composition of assemblages, based on relative taxon richness, varied considerably between sites but showed no relation to depth. The former three most abundant taxa accounted for 10-30% each of all taxa present. Standardised abundances based on trawl catches varied between 1 and 252 individuals per 1000 m2. Abundance significantly decreased with increasing depth, and assemblages showed high patchiness in their distribution. Cluster analysis based on relative abundance showed changes of community structure that were not linked to depth, area, sediment grain size or temperature. Generally abundances of zoobenthos in the abyssal Weddell Sea are lower than shelf abundances by several orders of magnitude.
    Keywords: Actiniaria; Agassiz Trawl; AGT; Alcyonacea; Amphipoda; Antipatharia; ANT-XXII/3; Ascidiacea; Asteroidea; Bivalvia; Brachiopoda; Bryozoa; Ceriantharia; Corallimorpharia; Crinoidea; Cumacea; Date/Time of event; Depth, bottom/max; Depth, top/min; Echiurida; Errantia; Event label; Haul length; Holothuroidea; Hydrozoa; Irregularia spp.; Isopoda; Latitude of event; Latitude of event 2; Longitude of event; Longitude of event 2; Mysidacea; Natantia; Nemertea; Ocean and sea region; Octopoda; Ophiuroidea; Opisthobranchia; Ostracoda; Pennatulacea; Pisces; Polarstern; Polyplacophora; Porifera; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; Prosobranchia; PS67/016-11; PS67/021-8; PS67/057-2; PS67/059-10; PS67/074-7; PS67/078-11; PS67/080-6; PS67/081-9; PS67/088-11; PS67/094-11; PS67/102-11; PS67/110-2; PS67/121-7; PS67/142-6; PS67/150-7; PS67/151-1; PS67 ANDEEP 3; Pycnogonida; Regularia spp.; Scaphopoda; Scleractinia; Scyphozoa; Sedentaria; Sediment type; Sipunculida; SPP1158; Tanaidacea; Teuthida; Thoracica; Volume; Zoantharia
    Type: Dataset
    Format: text/tab-separated-values, 784 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
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