Models of seabed sediment mobilisation examine the intermediate disturbance hypothesis for Australia's continental shelf environment. The study derives maps predicting the spatial distribution of a dimensionless ecological disturbance index (ED) based on high-energy, patch-clearing events exceeding a Shields parameter value of 0.25. Only a small portion of the shelf (~10%) is characterised by this disturbance regime, with recurrence intervals comparable to ecological succession rates.
Use Cases
- Mapping spatial patterns of seabed disturbance based on modelled sediment mobilisation.
- Analyzing biodiversity surrogate relationships based on the ecological disturbance index.
- Modeling the frequency and magnitude of physical seabed disturbance from waves and currents.
- Assessing disturbance regimes in wave-dominated, tide-dominated, or tropical cyclone dominated shelf areas.
- Evaluating the intermediate disturbance hypothesis for marine shelf environments.
Strengths
- The analysis is described as the first such attempt for any continental shelf on Earth.
- The study defines a specific, quantitative disturbance threshold (Shields parameter > 0.25).
- It provides a spatial estimate of the shelf area characterised by the disturbance regime (~10%).
Limitations
- Description metadata is limited; actual data quality requires manual inspection after download.
- Column-level documentation is absent; field semantics must be inferred after download.
- The dataset addresses only physical disturbance, excluding biological, temperature, salinity, or anthropogenic processes.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Models of seabed sediment mobilisation.
- Freshness
- Last updated 2026-05-05 02:10:01.422809; freshness should be verified.
- Geography
- Australia's continental shelf