Data Description

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Krapp, RH et al. (2008): (Tables 1-3) Amphipod species observed under Antarctic pack ice during POLARSTERN cruises ANT-XXI/4, ANT-XXII/2 and ANT-XXIII/6. doi:10.1594/PANGAEA.848503,
Supplement to: Krapp, Rupert H; Berge, Jørgen; Flores, Hauke; Gulliksen, Bjørn; Werner, Iris (2008): Sympagic occurrence of Eusirid and Lysianassoid amphipods under Antarctic pack ice. Deep Sea Research Part II: Topical Studies in Oceanography, 55(8-9), 1015-1023, doi:10.1016/j.dsr2.2007.12.018
During three Antarctic expeditions (2004, ANT XXI-4 and XXII-2; 2006, ANT XXIII-6) with the German research icebreaker R/V Polarstern, six different amphipod species were recorded under the pack ice of the Weddell Sea and the Lazarev Sea. These cruises covered Austral autumn (April), summer (December) and winter (August) situations, respectively. Five of the amphipod species recorded here belong to the family Eusiridae (Eusirus antarcticus, E. laticarpus, E. microps, E. perdentatus and E. tridentatus), while the last belongs to the Lysianassidea, genus Cheirimedon (cf. femoratus). Sampling was performed by a specially designed under-ice trawl in the Lazarev Sea, whereas in the Weddell Sea sampling was done by scuba divers and deployment of baited traps. In the Weddell Sea, individuals of E. antarcticus and E. tridentatus were repeatedly observed in situ during under-ice dives, and single individuals were even found in the infiltration layer. Also in aquarium observations, individuals of E. antarcticus and E. tridentatus attached themselves readily to sea ice. Feeding experiments on E. antarcticus and E. tridentatus indicated a carnivorous diet. Individuals of the Lysianassoid Cheirimedon were only collected in baited traps there. Repeated conventional zooplankton hauls performed in parallel to this study did not record any of these amphipods from the water column. In the Lazarev Sea, E. microps, E. perdentatus and E. laticarpus were regularly found in under-ice trawls. We discuss the origin and possible sympagic life style of these amphipods.
Median Latitude: -67.602646 * Median Longitude: -23.488234 * South-bound Latitude: -70.308330 * West-bound Longitude: -55.486670 * North-bound Latitude: -65.088330 * East-bound Longitude: 2.886670
Date/Time Start: 2004-04-10T19:42:00 * Date/Time End: 2006-08-04T18:21:00
Minimum ELEVATION: -4760 m a.s.l. * Maximum ELEVATION: -240 m a.s.l.
ANT-XXII/2_TRAPBP * * Latitude Start: -67.426670 * Longitude Start: -55.403330 * Latitude End: -67.353330 * Longitude End: -55.405000 * Date/Time Start: 2004-12-07T00:00:00 * Date/Time End: 2005-01-02T00:00:00 * Elevation Start: -1494.0 m * Elevation End: -1382.0 m * Location: Weddell Sea * * Campaign: ANT-XXII/2 (PS67 ISPOL) * * Basis: Polarstern * * Device: Trap, baited (TRAPB) *
ANT-XXII/2_drift-04 * * Latitude: -68.172650 * Longitude: -54.890280 * Date/Time: 2004-12-01T12:00:00 * Location: Weddell Sea * * Campaign: ANT-XXII/2 (PS67 ISPOL) * * Basis: Polarstern * * Device: Ice station (ICE) *
ANT-XXII/2_drift-06 * * Latitude: -68.130830 * Longitude: -55.230970 * Date/Time: 2004-12-03T12:00:00 * Location: Weddell Sea * * Campaign: ANT-XXII/2 (PS67 ISPOL) * * Basis: Polarstern * * Device: Ice station (ICE) *
+ = present, - = absent.
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event label *EventKrapp, Rupert H *
2Date/Time of event *Date/TimeKrapp, Rupert H *
3LATITUDE *LatitudeKrapp, Rupert H *Geocode
4LONGITUDE *LongitudeKrapp, Rupert H *Geocode
5ELEVATION *Elevationm a.s.l.Krapp, Rupert H *Geocode
6Latitude 2 *Lat 2Krapp, Rupert H *
7Longitude 2 *Long 2Krapp, Rupert H *
8Elevation 2 *Elev2m a.s.l.Krapp, Rupert H *
9Ice thickness *Ice thickmKrapp, Rupert H *mean
10Ice thickness *Ice thickmKrapp, Rupert H *min
11Ice thickness *Ice thickmKrapp, Rupert H *max
12Eusirus perdentatus *E. perdentatusKrapp, Rupert H *size: 49 mm, total number: 1
13Eusirus microps *E. micropsKrapp, Rupert H *size range: 12-42 mm, total number: 8
14Eusirus antarcticus *E. antarcticusKrapp, Rupert H *size range: 9-15 mm, total number: 60
15Eusirus tridentatus *E. tridentatusKrapp, Rupert H *size range: 18-24 mm, total number: 3
16Cheirimedon cf. femoratus *C. cf. femoratusKrapp, Rupert H *size range: 8-10 mm, total number: 8
17Eusirus laticarpus *E. laticarpusKrapp, Rupert H *size range: 6-19 mm, total number: 24
130 data points

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