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  • 1995-1999  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    The metazoan meiobenthos along a depth gradient in the Arctic Laptev Sea with special attention to nematode communities (1997)
    Springer
    Polar biology 18 (1997), S. 391-401 
    Details
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The meiobenthos along a depth transect of oligotrophic sediments in the Arctic Laptev Sea was studied. The meiobenthos followed the general trends reported from other studies: densities decreased with depth in relation to the more limited supply of degradable organic matter at greater depths. Although the sediments along the transect were poor in organic matter in comparison with the NE Atlantic, the densities fitted well with the meiobenthic densities reported from the latter area. It is suggested that the meiobenthos in the cold polar waters is adapted to this extreme environment by a rapid response to short food pulses to the sediments. Nematodes were identified up to genus level and assigned to trophic groups. A total of 32 families comprising 95 genera were found along the transect. The communities were dominated by deposit feeders whose importance increased with depth. Both TWINSPAN and CCA analyses revealed a community shift along the depth transect: a shelf community dominated by Microlaimus and Chromadora could be distinguished from a slope community dominated by Monhystera and Leptolaimus. Generic diversity decreased with depth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003000050205
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Sarsicopia polaris gen. et sp.n., the first platycopioida (Copepoda: Crustacea) from the Arctic Ocean, and its phylogenetic significance (1997)
    Springer
    Hydrobiologia 350 (1997), S. 35-47 
    Details
    ISSN: 1573-5117
    Keywords: Sarsicopia polaris gen. et sp.n. ; Platycopioida ; Copepoda ; Arctic Ocean ; phylogenetic systematics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A new genus of Platycopioida is described from a boxcore sample taken at a depth of 534 m in the ArcticBarents Sea. This is the deepest record ofPlatycopioida so far. Sarsicopia gen. n. is thesistergroup of a taxon comprising Platycopia and Nanocopia; the sistergroup ofthese is Antrisocopia. Sarsicopia gen. n.is the only platycopioid to retain 2 inner setae onthe second endopod segment P2–P4, and 8 setae in thethird endopod segment of P2. The male antennnule isremarkable in having a geniculation located betweenancestral segments XX and XXI. It is suggested thatthis flexure zone was already present in thegroundpattern of Copepoda. Platycopia and Nanocopia have secondarily lost thisgeniculation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003020829836
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    Paper (German National Licenses)
    Fulltext
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