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# Having a conservation action in place is not the same as knowing it works
- URL: https://intelligence.wildlandseco.com/2026-09-18-conservation-actions-evidence-gap/
- Published: 2026-09-18T14:11:05.000Z
- Updated: 2026-09-18T14:11:05.000Z
- Description: Linking Red List action records for nearly 25,000 vertebrates with 1,420 intervention assessments exposes both a large implementation footprint and major gaps in demonstrated effectiveness.
- Author: Benjamin Worlund
- Tags: conservation effectiveness, IUCN Red List, evidence synthesis, species recovery, Wildlife, Governance, Methods, #ecological-intelligence, #brief-2026-09-18, #priority-read, #peer-reviewed, #geo-global

Evidence

Peer-reviewed

Geography

Global; amphibians, birds and mammals

System

Species conservation interventions

## WHAT THE EVIDENCE SAYS

A Journal of Applied Ecology study combined IUCN Red List action data for 24,943 amphibian, bird and mammal species with Conservation Evidence assessments of 1,420 specific interventions. Among 7,336 species of concern, 78.5% had at least one action documented as in place and land/water protection was the most common. Yet only a minority of specific actions within broad action classes were categorized as beneficial or likely beneficial, and 22.8% of species may benefit from additional actions not currently documented as in place or needed.

## WHY IT MATTERS / OUR READ

This is a useful distinction between activity and evidence. Conservation planning needs to ask not only whether a broad action exists—protection, management, enforcement, incentives—but whether the specific intervention fits the threat, taxon and context and whether its outcome is being evaluated.

## CAVEATS / UNCERTAINTY

‘Inconclusive or no evidence’ is not the same as ‘ineffective.’ The synthesis maps broad Red List action categories to available evidence and is strongest for groups covered by Conservation Evidence; many interventions remain poorly studied, and not every potentially beneficial action is necessary for every species.

## SOURCE

Journal of Applied Ecology  
[View original evidence ↗](https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2664.70555?ref=intelligence.wildlandseco.com)

From the Morning Brief · 2026-09-18

[Read the full Morning Brief →](https://intelligence.wildlandseco.com/morning-brief-2026-09-18/)