Data · collection
The occurrance of heavy metals in marine benthic organisms, Cape Evans and Terra Nova Bay
Listed in NASA Earthdata CMR
The distribution of heavy metals (such as Cd, Pb and Hg) in different areas of the Antarctic marine coastal ecosystems along a latitudinal gradient, and at sites characterised by different degrees of human impact were investigated at two sites, including Cape Evans and Terra Nova Bay.
Description
At Cape Evans marine samples of benthic organisms including the bivalve mollusc Laternula elliptica, the seastar Odontaster validus, the sea urchin Sterechinus neumayeri and the algae Phyllophora antarctic were collected, along with marine sediment samples.
Samples of the fish Trematomus bernacchii were collected from a separate event and included in the analysis. The samples were immediately frozen in liquid nitrogen and transported to NZ for processing. The organisms were thawed and their body length and weight measured.
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A range of tissues were removed, weighed and lyophilized. A sub-sample of homogenized and freeze dried organisms was solubilized. Sediment samples were separated into two different granulometric fractions, dried, homogenized and solubilised.
The solubilized samples had the metal fraction bound to the carbonates and organic labile materials extracted. Results from Cape Evans were compared with findings from a project on biogeochemical cycling of Cd, Pb and Hg in the area of Terra Nova Bay.
Links
Documentation and papers
- LGP-Latitudinal Gradient Project lgp.aq ↗
documentation · from NASA CMR
- LGP-Latitudinal Gradient Project niwa.co.nz/rc/prog/antaquatic/intro ↗
documentation · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214590404-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214590404-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Animals Invertebrates · Ecotoxicology · Not provided · Plants
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214590404-SCIOPS | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biological-classification/animals-invertebrates | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biological-classification/plants | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biosphere/ecological-dynamics/ecotoxicology | 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 |
| 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 |