Marquardt, Miriam; Kramer, Maike; Carnat, Gauthier; Werner, Iris (2011): (Table 1) Snow and sea ice characteristics at stations sampled during a CCGS Amundsen cruise in 2008, eastern Beaufort Sea [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.817877, Supplement to: Marquardt, M et al. (2011): Vertical distribution of sympagic meiofauna in sea ice in the Canadian Beaufort Sea. Polar Biology, 34(12), 1887-1900, https://doi.org/10.1007/s00300-011-1078-y
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Abstract:
This is the first study to determine vertical distribution patterns of sympagic meiofauna, including metazoans, protozoans and eggs >20 µm, in the Amundsen Gulf (southeastern Beaufort Sea, Arctic). Full sea-ice cores were sampled from mid of March to end of May 2008 (Circumpolar Flaw Lead system study). Investigations were performed on first-year ice from three pack- and three fast-ice stations. Additionally, 5-cm bottom-ice sections were sampled at 13 pack-ice and 5 fast-ice stations. The metazoan community was composed of nematodes, rotifers, copepods, copepod nauplii, platyhelminthes and a few rare taxa such as mollusks, cnidarians and nemerteans. High numbers of eggs, between 50 and 2,188 eggs/L, particularly of nematodes and copepods, were present in the ice. Investigations revealed also eggs of the pelagic species Calanus hyperboreus and Sagitta spp. within the ice, so that further research is needed to clarify whether more organisms than expected might use this habitat as a reproduction ground. Many different morphotypes of protozoans were observed in the samples, especially ciliates of the order Euplotida. The highest abundance was always found in the lowermost 5 cm of the ice cores, nevertheless sympagic meiofauna was not restricted to that part of the ice. Integrated meiofauna abundance ranged between 41 and 4,738 x 10**2 Ind/m**2 and was highest in the fast ice in early May. Differences between pack and fast ice in terms of integrated meiofauna communities and vertical distribution were not significant, while the analysis of the bottom-ice sections indicated both a temporal development and ice-type-specific differences.
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Coverage:
Median Latitude: 71.512880 * Median Longitude: -123.947110 * South-bound Latitude: 70.322000 * West-bound Longitude: -126.611170 * North-bound Latitude: 74.861170 * East-bound Longitude: -120.000000
Date/Time Start: 2008-03-17T00:00:00 * Date/Time End: 2008-05-28T00:00:00
Minimum ELEVATION: -517 m a.s.l. * Maximum ELEVATION: -23 m a.s.l.
Event(s):
CFL08_D29-1 * Latitude: 71.513000 * Longitude: -123.794170 * Date/Time: 2008-03-17T00:00:00 * Elevation: -401.0 m * Location: Amundsen Gulf, Canada * Campaign: CCGSA_4-10_CFL08 (Circumpolar Flaw Lead Leg 4-10a) * Basis: CCGS Amundsen * Method/Device: Multiple investigations (MULT)
CFL08_D32-1 * Latitude: 71.083330 * Longitude: -122.277830 * Date/Time: 2008-03-22T00:00:00 * Location: Amundsen Gulf, Canada * Campaign: CCGSA_4-10_CFL08 (Circumpolar Flaw Lead Leg 4-10a) * Basis: CCGS Amundsen * Method/Device: Multiple investigations (MULT)
CFL08_D33 * Latitude: 71.111200 * Longitude: -121.305500 * Date/Time Start: 2008-03-01T00:00:00 * Date/Time End: 2008-04-04T00:00:00 * Elevation: -180.0 m * Location: Beaufort Sea * Campaign: CCGSA_4-10_CFL08 (Circumpolar Flaw Lead Leg 4-10a) * Basis: CCGS Amundsen * Method/Device: Multiple investigations (MULT)
Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | DATE/TIME | Date/Time | Geocode | |||
| 5 | Station label | Station | Marquardt, Miriam | |||
| 6 | ELEVATION | Elevation | m a.s.l. | Geocode | ||
| 7 | Snow type | Snow | Marquardt, Miriam | L = low (<8 cm snow depth), M = medium (8-15 cm snow depth), H = high (>15 cm snow depth) | ||
| 8 | Sea ice thickness | EsEs | m | Marquardt, Miriam | ||
| 9 | Number | No | Marquardt, Miriam | of cores for ice calculation | ||
| 10 | Snow thickness | Snow thick | m | Marquardt, Miriam | ||
| 11 | Number | No | Marquardt, Miriam | of cores for snow calculation | ||
| 12 | Freeboard | Freeboard | m | Marquardt, Miriam | ||
| 13 | Number | No | Marquardt, Miriam | of cores for freeboard calculation | ||
| 14 | Temperature, air | TTT | °C | Marquardt, Miriam | ||
| 15 | Temperature, ice/snow | t | °C | Marquardt, Miriam | # = data from 2008-05-09 | |
| 16 | Temperature, water | Temp | °C | Marquardt, Miriam | # = data from 2008-05-09 |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
187 data points