Publication Date:
2023-10-28
Description:
Abundance, diversity, and distribution of suprabenthic Isopoda caught from a water layer between 0.27 to 0.60 m above the seafloor were analysed. The samples were taken during the ANT XV/3 cruise on RV Polarstern by means of an epibenthic sledge along two transects in the southern Weddell Sea (Vestkapp and Halley Bay) and another one east of King George Island. At each of these three bathymetric transects, five to six stations were sampled between 200 and 2000 m. In total, 4258 specimens of isopods were sampled at 14 stations standardized to 1000 m2 hauls. 114 species were identified from 49 genera and 23 higher taxa (families and suborders) of Isopoda. Most of them belonged to the suborder Asellota. Dominant families are Munnopsididae (Eurycopinae, Ilyarachninae), Joeropsidae, Munnidae, Paramunnidae, Ischnomesidae and Desmosomatidae. No striking differences were found between areas (Vestkapp, Halley Bay, Kapp Norvegia, and Bransfield Strait). Overall isopod abundances were highest at the shallowest station; species richness was slightly higher above 1000 m depth.
Keywords:
Acanthaspidiidae; Aegidae; Anthuridea; ANT-XV/3; Area/locality; AWI; Cirolanidae; Counting; Cryptoniscidae; Date/Time of event; Desmosomatidae; EBS; Epibenthic sledge; Eurycopinae; Event label; Gnathiidae; Halley Bay; Haploniscidae; Haul length; Ilyarachninae; Ischnomesidae; Janiridae; Joeropsidae; Kapp Norvegia; King George Island, Antarctic Peninsula; Latitude of event; Longitude of event; Macrostylidae; Munnidae; Munnopsinae; Nannoniscidae; Number of species; Number of specimens; Paramunnidae; Polarstern; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; PS48/089; PS48/107; PS48/111; PS48/130; PS48/133; PS48/142; PS48/145; PS48/171; PS48/272; PS48/310; PS48/311; PS48/316; PS48/320; PS48/323; PS48 EASIZ II; Sample elevation; Santiidae; Sediment type; Serolidae; South of Vestkapp; SPP1158; Stenetriidae; Storthyngurinae; Valvifera
Type:
Dataset
Format:
text/tab-separated-values, 406 data points
Permalink
