Kramer, Maike; Kiko, Rainer (2011): (Table 1) Sympagic meiofauna and amphipods inhabiting the meltponds in the Central Arctic sampled during POLARSTERN cruise ARK-XXII/2 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.848479, Supplement to: Kramer, M; Kiko, R (2011): Brackish meltponds on Arctic sea ice - a new habitat for marine metazoans. Polar Biology, 34(4), 603-608, https://doi.org/10.1007/s00300-010-0911-z
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Abstract:
Meltponds on Arctic sea ice have previously been reported to be devoid of marine metazoans due to fresh-water conditions. The predominantly dark frequently also green and brownish meltponds observed in the Central Arctic in summer 2007 hinted to brackish conditions and considerable amounts of algae, possibly making the habitat suitable for marine metazoans. Environmental conditions in meltponds as well as sympagic meiofauna in new ice covering pond surfaces and in rotten ice on the bottom of ponds were studied, applying modified techniques from sea-ice and under-ice research. Due to the very porous structure of the rotten ice, the meltponds were usually brackish to saline, providing living conditions very similar to sub-ice water. The new ice cover on the surface had similar characteristics as the bottom layer of level ice. The ponds were thus accessible to and inhabitable by metazoans. The new ice cover and the rotten ice were inhabited by various sympagic meiofauna taxa, predominantly ciliates, rotifers, acoels, nematodes and foraminiferans. Also, sympagic amphipods were found on the bottom of meltponds. We suggest that, in consequence of global warming, brackish and saline meltponds are becoming more frequent in the Arctic, providing a new habitat to marine metazoans.
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: 86.759440 * Median Longitude: 151.159520 * South-bound Latitude: 84.652600 * West-bound Longitude: 102.732400 * North-bound Latitude: 88.156300 * East-bound Longitude: -169.732500
Date/Time Start: 2007-08-31T17:50:00 * Date/Time End: 2007-09-16T21:30:00
Minimum Elevation: -4278.0 m * Maximum Elevation: -2773.0 m
Event(s):
PS70/322-1 * Latitude Start: 88.127200 * Longitude Start: 150.077200 * Latitude End: 88.156300 * Longitude End: 150.973700 * Date/Time Start: 2007-08-31T17:50:00 * Date/Time End: 2007-09-01T01:00:00 * Elevation Start: -2773.0 m * Elevation End: -3106.0 m * Location: Arctic Ocean * Campaign: ARK-XXII/2 (PS70 SPACE DAMOCLES) * Basis: Polarstern * Method/Device: Ice station (ICE)
PS70/328-1 * Latitude Start: 87.832700 * Longitude Start: -170.741000 * Latitude End: 87.829600 * Longitude End: -169.732500 * Date/Time Start: 2007-09-02T11:12:00 * Date/Time End: 2007-09-02T23:45:00 * Elevation Start: -3992.0 m * Elevation End: -3995.0 m * Location: Arctic Ocean * Campaign: ARK-XXII/2 (PS70 SPACE DAMOCLES) * Basis: Polarstern * Method/Device: Ice station (ICE)
PS70/352-1 * Latitude Start: 86.632200 * Longitude Start: 177.589400 * Latitude End: 86.662800 * Longitude End: 177.228600 * Date/Time Start: 2007-09-10T11:36:00 * Date/Time End: 2007-09-11T03:40:00 * Elevation Start: -4002.0 m * Elevation End: -3993.0 m * Location: Arctic Ocean * Campaign: ARK-XXII/2 (PS70 SPACE DAMOCLES) * Basis: Polarstern * Method/Device: Ice station (ICE)
Comment:
+++ abundant and dominant, ++ abundant, + present in low abundance, - not observed. Taxa, which were found in level ice (bottom 5 cm) or sub-ice (layer 0 m) but not in meltponds are also listed (all cells "-").
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Kramer, Maike | |||
| 2 | Sample type | Samp type | Kramer, Maike | |||
| 3 | Site | Site | Kramer, Maike | |||
| 4 | Ciliates indeterminata | Ciliates indet | Kramer, Maike | |||
| 5 | Ciliates indeterminata | Ciliates indet | #/l | Kramer, Maike | ||
| 6 | Neogloboquadrina pachyderma | N. pachyderma | Kramer, Maike | Abundance estimate | ||
| 7 | Radiolarians indeterminata | Rad indet | Kramer, Maike | Abundance estimate | ||
| 8 | Acoela indeterminata | Acoela indet | Kramer, Maike | Abundance estimate | red | |
| 9 | Acoela indeterminata | Acoela indet | Kramer, Maike | Abundance estimate | white | |
| 10 | Acoela indeterminata | Acoela indet | Kramer, Maike | Abundance estimate | white-rose | |
| 11 | Nemertea | Nemertea | Kramer, Maike | Abundance estimate | ||
| 12 | Nematoda | Nematoda | Kramer, Maike | Abundance estimate | ||
| 13 | Rotifera | Rotifera | Kramer, Maike | Abundance estimate | ||
| 14 | Rotifera | Rotifera | #/l | Kramer, Maike | ||
| 15 | Halectinosoma spp. | Halectinosoma spp. | Kramer, Maike | Abundance estimate | ||
| 16 | Tisbe spp. | Tisbe spp. | Kramer, Maike | Abundance estimate | ||
| 17 | Calanus spp. | Calanus spp. | Kramer, Maike | Abundance estimate | ||
| 18 | Metridia longa | M. longa | Kramer, Maike | Abundance estimate | ||
| 19 | Eurytemora richingsi | E. richingsi | Kramer, Maike | Abundance estimate | ||
| 20 | Calanoida indeterminata | Calanoida indet | Kramer, Maike | Abundance estimate | ||
| 21 | Oithona cf. similis | O. cf. similis | Kramer, Maike | Abundance estimate | ||
| 22 | Cyclopoida indeterminata | Cyclopoida indet | Kramer, Maike | Abundance estimate | ||
| 23 | Copepoda indeterminata, nauplii | Copepoda indet naup | Kramer, Maike | Abundance estimate | ||
| 24 | Apherusa glacialis | A. glacialis | Kramer, Maike | Abundance estimate | ||
| 25 | Eggs indeterminata | Eggs indet | Kramer, Maike | Abundance estimate | metazoa | |
| 26 | Salinity | Sal | Kramer, Maike | pond water min; #: a = 23.8, b = 11.9, c = 29.9 | ||
| 27 | Salinity | Sal | Kramer, Maike | pond water max; #: a = 31.2, b = 31.2, c = 31.1 | ||
| 28 | Salinity | Sal | Kramer, Maike | bulk | ||
| 29 | Chlorophyll a | Chl a | µg/l | Kramer, Maike | ||
| 30 | Comment | Comment | Kramer, Maike |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
169 data points
Data
| 1 Event | 2 Samp type | 3 Site | 4 Ciliates indet | 5 Ciliates indet [#/l] | 6 N. pachyderma | 7 Rad indet | 8 Acoela indet (red) | 9 Acoela indet (white) | 10 Acoela indet (white-rose) | 11 Nemertea | 12 Nematoda | 13 Rotifera | 14 Rotifera [#/l] | 15 Halectinosoma spp. | 16 Tisbe spp. | 17 Calanus spp. | 18 M. longa | 19 E. richingsi | 20 Calanoida indet | 21 O. cf. similis | 22 Cyclopoida indet | 23 Copepoda indet naup | 24 A. glacialis | 25 Eggs indet (metazoa) | 26 Sal (pond water min; #: a = 23.8, ...) | 27 Sal (pond water max; #: a = 31.2, ...) | 28 Sal (bulk) | 29 Chl a [µg/l] | 30 Comment |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PS70/322-1 | Meltponds - new ice | MP-1 | +++ | 218 | ++ | - | + | - | - | - | + | ++ | 9 | - | - | - | - | - | - | - | - | + | - | 10.4 | 4.8 | brown edges | |||
| PS70/322-1 | Meltponds - rotten ice | MP-1 | ++ | +++ | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | + | + | 4.5 | 1.0 | brown edges | ||||
| PS70/328-1 | Meltponds - rotten ice | MP-2b | ++ | ||||||||||||||||||||||||||
| PS70/352-1 | Meltponds - new ice | MP-5 | - | - | +++ | - | - | - | ++ | ++ | + | + | - | - | - | - | - | - | - | - | 29.1 | 29.3 | 7.3 | 3.6 | green; large thaw holes | ||||
| PS70/352-1 | Meltponds - rotten ice | MP-5 | ++ | + | - | - | - | - | - | - | +++ | + | + | - | - | - | - | - | + | + | - | 29.1 | 29.3 | 4.9 | 40.6 | green; large thaw holes | |||
| PS70/363-1 | Meltponds - new ice | MP-6(a-c) | + | + | - | + | - | - | - | - | +++ | - | + | - | - | - | - | - | - | - | - | #11.9 | #31.2 | rotten ice very porous; platelet-like ice underlying new ice | |||||
| PS70/371-1 | Meltponds - new ice | MP-8a | +++ | + | - | - | - | - | - | - | ++ | - | + | - | - | + | - | + | - | + | - | green | |||||||
| PS70/371-1 | Meltponds - new ice | MP-8(b-c) | +++ | - | - | - | - | - | - | +++ | - | - | - | - | - | - | - | black; large thaw holes |