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What Works in Conservation 2015

 | 
William J. Sutherland
, 
Lynn V. Dicks
, 
Nancy Ockendon
, 
et al.

1. Amphibian conservation

1.10. Threat: Climate change and severe weather

Texte intégral

Based on the collated evidence, what is the current assessment of the effectiveness of interventions for climate change and severe weather?

Beneficial

● Deepen ponds to prevent desiccation (deepen, de-silt or re-profile)

Unknown effectiveness (limited evidence)

● Use irrigation systems for amphibian sites (artificially mist habitat)

No evidence found (no assessment)

● Artificially shade ponds to prevent desiccation
● Protect habitat along elevational gradients
● Provide shelter habitat

Create microclimate and microhabitat refuges

1Studies investigating the effects of creating refuges are discussed in ʹHabitat restoration and creationʹ and ʹBiological resource use – Leave coarse woody debris in forestsʹ.

Maintain ephemeral ponds

2Studies investigating the effects of regulating water levels and deepening ponds are discussed in ʹThreat: Natural system modifications – Regulate water levelsʹ and ʹHabitat restoration and creation – Deepen, de-silt or re-profile pondsʹ.

Beneficial

Deepen ponds to prevent desiccation

3Four studies, including one replicated, controlled study, in France, Denmark and the UK found that pond deepening and enlarging or re-profiling resulted in establishment or increased populations of amphibians. Four before-and-after studies in Denmark and the UK found that pond deepening, along with other interventions, maintained newt or increased toad populations. Assessment for ʹDeepen, de-silt or re-profie pondsʹ from ʹHabitat restoration and creationʹ section: beneficial (effectiveness 71%; certainty 65%; harms 0%).

4http://www.conservationevidence.com/​actions/​806

Unknown effectiveness (limited evidence)

Use irrigation systems for amphibian sites

5One before-and-after study in Tanzania found that installing a sprinkler system to mitigate against a reduction of river flow did not maintain a population of Kihansi spray toads. Assessment for ʹArtificially mist habitat to keep it dampʹ from ʹThreat: Energy production and miningʹ section: unknown effectiveness – limited evidence (effectiveness 24%; certainty 20%; harms 0%).

6http://www.conservationevidence.com/​actions/​804

No evidence found (no assessment)

7We have captured no evidence for the following interventions:

8• Artificially shade ponds to prevent desiccation

9• Protect habitat along elevational gradients

10• Provide shelter habitat

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