Australian Ocean Data Network provides multibeam acoustic imagery mapping fine-scale seafloor habitats on Tasmania's east coast. The dataset includes substrate type and kelp coverage maps, and predictions of urchin barrens, representing a snapshot of 2021 distributions. Data packages are split by fishing blocks and available via the Seamap Australia portal.
Use Cases
- Mapping the spatial distribution of key abalone habitat based on detailed substrate type classifications.
- Monitoring kelp coverage changes over time based on the vegetation distribution maps.
- Predicting and analyzing the extent of urchin barrens based on the acoustic water column technique.
- Facilitating strategic planning for marine ecosystem management based on the habitat snapshot.
Strengths
- Data provides a snapshot of the 2021 distribution of seafloor habitats and vegetation.
- Detailed substrate type maps include Pavement Reef, Megaclast Reef, Mixed Consolidated Sediment/Reef, and Sand.
- The minimum quantifiable unit for detecting small incipient urchin barrens has been identified.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data may reflect geographic bias inherent to data_gov_au, focusing only on Tasmanian east coast.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Multibeam acoustic imagery.
- Time Range
- 2021
- Freshness
- Last updated 2026-05-06 03:41:53.412185; freshness should be verified.
- Geography
- East coast of Tasmania, in water depths less than 25 meters.