Impacts of Bottom Trawling on Deep-Seamount Coral Ecosystems from Tasmania

Research from Parks Australia, last updated in July 2026, examines the long-term impacts of bottom trawling on deep-sea coral ecosystems. The analysis is based on 64,504 video frames and 704 high-resolution images from 25 seamounts off Tasmania, Australia. It documents dramatic reductions in coral cover and associated biodiversity, with no clear recovery observed even a decade after trawling ceased.

Use Cases

• Modeling the long-term recovery rates of deep-sea coral communities based on documented biological traits like slow growth.
• Assessing biodiversity loss and community structure shifts in trawled versus untrawled seamounts based on species richness and density metrics.
• Evaluating the effectiveness of spatial fishery closures as a conservation instrument based on the observed persistence of impacts.

Strengths

• Analysis is based on a substantial visual dataset of 64,504 video frames and 704 high-resolution images.
• Study covers 25 seamounts, providing a broad spatial scope for the investigation.
• Research includes a temporal component, examining impacts up to a decade after trawling activity ceased.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The dataset is provided in HTML format, which may not be directly machine-readable for analysis.

Provenance

Source

Parks Australia, referencing a source publication.

Collection Method

Analysis of video frames and high-resolution images from seamount surveys.

Time Range

Study period not explicitly stated; analysis references impacts a decade and five years prior.

Freshness

Last updated 2026-07-16 23:37:02.707788; freshness should be verified.

Geography

Seamounts off Tasmania, Australia.