Note: this dataset description is metadata (data about data) which describes the actual dataset in accordance with the ANZLIC (Australia New Zealand Land Information Council) Core Metadata Guidelines Version 2 (February 2001)
ANZLIC unique identifier: ANZNS0281000005
Title: Assessment of Ecosystem Health using a Freshwater Clam (Corbiculina australis) in the Hawkesbury-Nepean River
Custodian: Environment Protection Authority NSW
Jurisdiction: New South Wales
The suitability of the native Australian freshwater clam, CORBICULINA AUSTRALIS, has been evaluated for assessing ecosystem health in the Hawkesbury-Nepean River. Toxicity tests were conducted on C.Australis pediveliger larvae, resulting in significant mortalities for ammonia, copper and zinc test concentrations. The LC50 values (the lethal concentration of chemical to 50% of the test organisms) were calculated for 24 and 96 hours, as well as LOEC (lowest observable effect concentration) and NOEC (no observed effect concentration). The results show C. Australis larvae are amenable to toxicity tests and are a sensitive species which are comparable to other macroinvertebrates used in toxicity tests. Preliminary results are reported for the laboratory based ecotoxicological tests. Further work investigated the clams reproductive biology supplemented with field transplant experiments.
- ECOLOGY Monitoring
- WASTE Toxic Monitoring
- Geographic extent name:
- HAWKESBURY RIVER - SOUTH-EAST COAST - Major River Basins - New South Wales
- Geographic extent polygon:
- 149.408 -32.7, 151.476 -32.7, 151.476 -35.166, 149.408 -35.166, 149.408 -32.7
Note: The format for each Geographic extent name is: Name - Identifier - Category - Jurisdiction (as appropriate)
Geographic bounding box:
The bounding box encloses the maximum extents of the dataset. There may be voids or gaps within the bounding box, depending on the defined coverage of the dataset. Outer bounding rectangle as Latitude/Longitude coordinates based on the WGS84 datum (expressed as both Degrees Minutes Seconds and as decimal Degrees):
- North bounding latitude: 32 42 00.0 S (-32.7)
- South bounding latitude: 35 09 57.6 S (-35.166)
- East bounding longitude: 151 28 33.6 E (151.476)
- West bounding longitude: 149 24 28.8 E (149.408)
Lineage:
Eco-Toxicology = Toxidity testing, field transplant experiments
Positional accuracy:
Moderately accurate
Attribute accuracy:
Reasonably accurate
Logical consistency:
Eco-Toxicology and has been analysed to confirm concentrations
Completeness:
Complete
This dataset description complies with ANZLIC Core Metadata Guidelines Version 2 (February 2001) and XML DTD ANZMETA NSW NRIMS Page 1 v1.0 which extends ANZMETA 1.3 (metadata validation date: 2004-07-11)