Video Surveys of Long-Spined Sea Urchin Barrens Habitat in St Helens, Tasmania

Video surveys estimate the spatial extent of Centrostephanus rodgersii barrens on rocky reef habitats. Sampling occurred at 13 regions along Tasmania's east coast, with this dataset focusing on the St Helens region and its three subsites. The Australian Ocean Data Network provides this data, last updated in July 2026.

Use Cases

• Map the spatial extent of sea urchin barrens based on video survey transects.
• Assess habitat change over time by comparing video surveys from different regions.
• Model the relationship between sea urchin density and barren formation based on visual estimates.

Strengths

• Data collection method is specified: towed underwater video system.
• Geographic scope is defined: St Helens region with three named subsites.
• Dataset is part of a larger survey covering 13 regions along the Tasmanian coast.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Australian Ocean Data Network

Collection Method

Spatial extent estimated by surveying rocky reef habitat with a towed underwater video system.

Freshness

Last updated 2026-07-22 02:10:26.198266; freshness should be verified

Geography

St Helens region (Binalong Bay, St Helens Island, St Helens Point), eastern Tasmania, Australia.