Excel · collection · 1983
The Faunal Assemblage Inhabiting Seasonal Sea Ice in the Nearshore Arctic Ocean (Beaufort Sea, Alaska) in Spring 1980 with Emphasis on Copepods
Listed in NASA Earthdata CMR
Large numbers of invertebrates were collected from the lower layer of seasonal ice in the nearshore Beaufort Sea, off the northern Beaufort Sea, off the northern coast of Alaska in spring 1980.
Description
Over 90% of the individuals found belonged to meiofaunal taxa. Although density within the ice was low compared to that typically found in sediments, it was comparable to the highest previous estimate from sea ice.
Densities were lowest in samples taken in April and reached a maximum of around 50000 individuals m-2 in June. Nematodes were numerically dominant, but copepods and turbellarians were also abundant. Population structures of the 2 most numerous copepod species were examined and found to differ greatly.
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Cyclopina gracilis appeared to reproduce continuously during the study; both adults and young copepodites were always present. The population of Harpacticus sp. initially consisted of only juveniles; the growth fo a single cohort was observed. Harpacticus sp. mated in the ice, but gravid females did not appear during the sampling period.
Although the ephemeral seasonal sea ice habitat would seem to be very different from typical habitats of benthic copepods, these two species did not appear to posses any special strategies for living there.
Links
Get the data
- GET DATA ak.aoos.org/data/archive/2009/0000006 ↗
download · from NASA CMR
Documentation and papers
- VIEW RELATED INFORMATION ak.aoos.org/rest/metadata/ArcOD/2008I3 ↗
documentation · from NASA CMR
- VIEW RELATED INFORMATION arcodiv.org ↗
documentation · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214594995-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214594995-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Copepods · CORING DEVICES · Not provided · Sea Ice
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214594995-SCIOPS | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:coring-devices | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biological-classification/animals-invertebrates/arthropods/crustaceans/copepods | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/sea-ice | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| publication_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |