Toxicity of Heavy Metals to Juvenile Antarctic Heart Urchins

Experimental data on the toxicity of lead, copper, zinc, and cadmium in seawater to juvenile Abatus heart urchin species. The dataset includes mortality observations over 96 and 240-hour exposure periods, with fields for species, toxicant, concentration, and environmental parameters like pH and salinity. Data was collected under the ASAC_2201 project and last updated in February 2003.

Use Cases

• Modeling dose-response relationships for heavy metals based on concentration and mortality data.
• Analyzing the influence of environmental conditions on toxicity based on pH, salinity, and dissolved oxygen fields.
• Comparing species sensitivity between Abatus ingens and Abatus nimrodi based on the species field.
• Training survival analysis models based on mortality endpoints over 96 and 240-hour exposure periods.

Strengths

• Includes four distinct heavy metal toxicants (lead, copper, zinc, cadmium) tested separately.
• Contains environmental covariates like pH, salinity, and dissolved oxygen for each observation.
• Experimental endpoint is clearly defined as mortality (cessation of observable movement).

Limitations

• Last updated 2003-02-28 23:59:59.999000; freshness should be verified.
• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

AU_AADC (likely Australian Antarctic Data Centre)

Collection Method

Controlled laboratory experiments with spiked seawater.

Time Range

Dates of experiments are included as a field, but overall temporal coverage is not specified.

Freshness

Last updated 2003-02-28 23:59:59.999000

Geography

Likely Antarctic, given the species (Abatus spp.) and platform tags, but not explicitly stated.