Gradinger, Rolf; Bluhm, Bodil Annikki (2010): (Table 1) Composition of stomach and gut content of the amphipod Onisimus litoralis, and algal availability near Barrow, Alaska [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.810308, Supplement to: Gradinger, R; Bluhm, BA (2010): Timing of Ice Algal Grazing by the Arctic Nearshore Benthic Amphipod Onisimus litoralis. Arctic, 63(3), 355-356, https://doi.org/10.14430/arctic1498
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Abstract:
Sea ice algae have been widely discussed as a potential food source for pelagic and benthic animals in ice-covered waters, specifically in the light of current substantial changes in the Arctic ice regime. Stomach and gut contents of the Arctic nearshore lysianassid amphipod Onisimus litoralis sampled from February to May 2003 indicate that Arctic ice algae were dominant food no earlier than the onset of ice melt. Crustaceans, common prey in a previous study, were absent in stomachs and guts during the survey period. Our data support the concept that sea ice-derived organic carbon is of specific relevance for Arctic plankton and benthos during the period of ice melt.
Project(s):
Coverage:
Latitude: 71.330000 * Longitude: -156.700000
Date/Time Start: 2003-02-01T00:00:00 * Date/Time End: 2003-05-01T00:00:00
Minimum Elevation: -6.0 m * Maximum Elevation: -6.0 m
Event(s):
Comment:
Stomach content is given in relative frequency (% fields of view). 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 | DATE/TIME | Date/Time | Geocode | |||
| 2 | Depth, bottom/max | Depth bot | m | Gradinger, Rolf | ||
| 3 | Onisimus litoralis, stomach content | O. litoralis stomach cont | % | Gradinger, Rolf | sediment particles < 5 µm | |
| 4 | Onisimus litoralis, stomach content | O. litoralis stomach cont | % | Gradinger, Rolf | animal remains | |
| 5 | Onisimus litoralis, stomach content | O. litoralis stomach cont | % | Gradinger, Rolf | pennate diatoms | |
| 6 | Chlorophyll a | Chl a | µg/l | Gradinger, Rolf | in sea ice | |
| 7 | Chlorophyll a, standard deviation | Chl a std dev | ± | Gradinger, Rolf | sea ice | |
| 8 | Chlorophyll a | Chl a | µg/l | Gradinger, Rolf | in water | |
| 9 | Chlorophyll a, standard deviation | Chl a std dev | ± | Gradinger, Rolf | water | |
| 10 | Chlorophyll a per unit sediment mass | Chl a/sed | µg/g | Gradinger, Rolf | per dry weight | |
| 11 | Chlorophyll a, standard deviation | Chl a std dev | ± | Gradinger, Rolf | sediment |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
30 data points
Data
| 1 Date/Time | 2 Depth bot [m] | 3 O. litoralis stomach cont [%] (sediment particles < 5 µm) | 4 O. litoralis stomach cont [%] (animal remains) | 5 O. litoralis stomach cont [%] (pennate diatoms) | 6 Chl a [µg/l] (in sea ice) | 7 Chl a std dev [±] (sea ice) | 8 Chl a [µg/l] (in water) | 9 Chl a std dev [±] (water) | 10 Chl a/sed [µg/g] (per dry weight) | 11 Chl a std dev [±] (sediment) |
|---|---|---|---|---|---|---|---|---|---|---|
| 2003-02 | 6 | 83.3 | 0 | 1.7 | 7.4 | 0.7 | 0.0 | 0 | 0.5 | 0.6 |
| 2003-04 | 6 | 16.7 | 0 | 33.3 | 71.4 | 16.1 | 0.1 | 0 | 0.2 | 0.4 |
| 2003-05 | 6 | 33.3 | 0 | 100.0 | 329.3 | 42.0 | 0.9 | 0 | 1.0 | 0.3 |