1.10 Threat: Climate change and severe weather
p. 42-43
Texte intégral

Create microclimate and microhabitat refuges
1Studies investigating the effects of creating refuges are discussed in ‘Habitat restoration and creation’ and ‘Threat: Biological resource use — Leave coarse woody debris in forests’.
Maintain ephemeral ponds
2Studies investigating the effects of regulating water levels and deepening ponds are discussed in ‘Threat: Natural system modifications—Regulate water levels’ and ‘Habitat restoration and creation — Deepen, de-silt or re-profile ponds’.
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 ‘Deepen, de-silt or re-profie ponds’ from ‘Habitat restoration and creation’ 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 ‘Artificially mist habitat to keep it damp’ from ‘Threat: Energy production and mining’ 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:
- Artificially shade ponds to prevent desiccation
- Protect habitat along elevational gradients
- Provide shelter habitat.
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