36 Actions found

Actions to conserve biodiversity

We have summarised evidence from the scientific literature about the effects of actions to conserve wildlife and ecosystems.

Review the evidence from the studies

About actions Sources of evidence

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36 Actions found

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Fit a funnel (such as a sievenet) or other escape devices on shrimp/prawn trawl nets

Action Link 		Unknown effectiveness (limited evidence) 1 Fit a funnel (such as a sievenet) or other escape devices on shrimp/prawn trawl nets Synopsis Link

Fit one or more mesh escape panels/windows and one or more soft, rigid or semi-rigid grids or frames to trawl nets

Action Link 		Unknown effectiveness (limited evidence) 1 Fit one or more mesh escape panels/windows and one or more soft, rigid or semi-rigid grids or frames to trawl nets Synopsis Link

Fit one or more mesh escape panels/windows on pots and traps

Action Link 		No evidence found (no assessment) 0 Fit one or more mesh escape panels/windows on pots and traps Synopsis Link

Fit one or more mesh escape panels/windows to trawl nets

Action Link 		Likely to be beneficial 5 Fit one or more mesh escape panels/windows to trawl nets Synopsis Link

Fit one or more mesh escape panels/windows to trawl nets and use a square mesh instead of a diamond mesh codend

Action Link 		Unknown effectiveness (limited evidence) 1 Fit one or more mesh escape panels/windows to trawl nets and use a square mesh instead of a diamond mesh codend Synopsis Link

Fit one or more soft, semi-rigid, or rigid grids or frames and increase the mesh size of pots and traps

Action Link 		Unknown effectiveness (limited evidence) 1 Fit one or more soft, semi-rigid, or rigid grids or frames and increase the mesh size of pots and traps Synopsis Link

Fit one or more soft, semi-rigid, or rigid grids or frames on pots and traps

Action Link 		Unknown effectiveness (limited evidence) 1 Fit one or more soft, semi-rigid, or rigid grids or frames on pots and traps Synopsis Link

Fit one or more soft, semi-rigid, or rigid grids or frames to trawl nets

Action Link 		Likely to be beneficial 2 Fit one or more soft, semi-rigid, or rigid grids or frames to trawl nets Synopsis Link

Fit one or more soft, semi-rigid, or rigid grids or frames to trawl nets and use square mesh instead of a diamond mesh at the codend

Action Link 		Unknown effectiveness (limited evidence) 1 Fit one or more soft, semi-rigid, or rigid grids or frames to trawl nets and use square mesh instead of a diamond mesh at the codend Synopsis Link

Hand harvest instead of using a dredge

Action Link 		Unknown effectiveness (limited evidence) 2 Hand harvest instead of using a dredge Synopsis Link

Increase the mesh size of pots and traps

Action Link 		Unknown effectiveness (limited evidence) 1 Increase the mesh size of pots and traps Synopsis Link

Limit the maximum weight and/or size of bobbins on the footrope

Action Link 		No evidence found (no assessment) 0 Limit the maximum weight and/or size of bobbins on the footrope Synopsis Link

Modify harvest methods of macroalgae

Action Link 		No evidence found (no assessment) 0 Modify harvest methods of macroalgae Synopsis Link

Modify the design of dredges

Action Link 		Likely to be beneficial 5 Modify the design of dredges Synopsis Link

Modify the design of traps

Action Link 		Unknown effectiveness (limited evidence) 2 Modify the design of traps Synopsis Link

Modify the design/attachments of a shrimp/prawn W-trawl net

Action Link 		Unknown effectiveness (limited evidence) 1 Modify the design/attachments of a shrimp/prawn W-trawl net Synopsis Link

Modify the position of traps

Action Link 		Likely to be beneficial 2 Modify the position of traps Synopsis Link

Modify trawl doors to reduce sediment penetration

Action Link 		No evidence found (no assessment) 0 Modify trawl doors to reduce sediment penetration Synopsis Link

Outfit trawls with a raised footrope

Action Link 		No evidence found (no assessment) 0 Outfit trawls with a raised footrope Synopsis Link

Reduce the number or modify the arrangement of tickler chains/chain mats on trawl nets

Action Link 		Unknown effectiveness (limited evidence) 2 Reduce the number or modify the arrangement of tickler chains/chain mats on trawl nets Synopsis Link

Release live unwanted catch first before handling commercial species

Action Link 		No evidence found (no assessment) 0 Release live unwanted catch first before handling commercial species Synopsis Link

Set unwanted catch quotas

Action Link 		No evidence found (no assessment) 0 Set unwanted catch quotas Synopsis Link

Use a larger codend mesh size on trawl nets

Action Link 		Likely to be beneficial 1 Use a larger codend mesh size on trawl nets Synopsis Link

Use a larger mesh size on trammel nets

Action Link 		Unknown effectiveness (limited evidence) 1 Use a larger mesh size on trammel nets Synopsis Link

Use a midwater/semi-pelagic trawl instead of bottom/demersal trawl

Action Link 		Likely to be beneficial 1 Use a midwater/semi-pelagic trawl instead of bottom/demersal trawl Synopsis Link
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What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

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The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

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