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What Works in Conservation 2021

 | 
William Junior Sutherland
, 
Lynn V. Dicks
, 
Silviu O. Petrovan
, 
et al.

15. Terrestrial mammal conservation

15.9 Threat: Pollution

Texte intégral

Likely to be beneficial

Leave headlands in fields unsprayed

1Two studies evaluated the effects on mammals of leaving headlands in fields unsprayed. One study was in the UK and one was in the Netherlands.

2COMMUNITY RESPONSE (0 STUDIES)

3POPULATION RESPONSE (0 STUDIES)

4BEHAVIOUR (2 STUDIES)

5Use (2 studies): Two replicated studies (one also controlled) in the UK and the Netherlands, found that crop edge headlands that were not sprayed with pesticides were used more by mice than were sprayed crop edges.

6Assessment: likely to be beneficial (effectiveness 60 %; certainty 50 %; harms 0 %).

https://www.conservationevidence.com/​actions/​2540

Unknown effectiveness

Reduce pesticide or fertilizer use

7Three studies evaluated the effects on mammals of reducing pesticide, herbicide or fertilizer use. Two studies were in the UK, one was in Italy and one was in Argentina.

8COMMUNITY RESPONSE (1 STUDY)

9Richness/diversity (1 study): A replicated, site comparison study in Argentina found that farming without pesticides or fertilizers did not increase small mammal species richness in field margins.

10POPULATION RESPONSE (2 STUDIES)

11Abundance (2 studies): One of two site comparison studies, in the UK and Italy, found that reducing pesticide or fertilizer use, by farming organically, increased wood mouse abundance. The other study found that it did not increase European hare abundance.

12BEHAVIOUR (1 STUDY)

13Use (1 study): A replicated, site comparison study in Argentina found that farming without pesticides or fertilizers did not increase small mammal use of field margins.

14Assessment: unknown effectiveness (effectiveness 38 %; certainty 23 %; harms 0 %).

https://www.conservationevidence.com/​actions/​2539

Translocate mammals away from site contaminated by oil spill

15One study evaluated the effects of translocating mammals away from a site contaminated by oil spill. This study was in the USA.

16COMMUNITY RESPONSE (0 STUDIES)

17POPULATION RESPONSE (1 STUDY)

18Survival (1 study): A study in the USA found that after being translocated in a trial of responses to a hypothetical pollution incident, most sea-otters survived for the duration of monitoring.

19BEHAVIOUR (1 STUDY)

20Behaviour change (1 study): A study in the USA found that after being translocated in a trial of responses to a hypothetical pollution incident, most sea-otters did not return to their capture location.

21Assessment: unknown effectiveness (effectiveness 65 %; certainty 20 %; harms 10 %).

https://www.conservationevidence.com/​actions/​2542

No evidence found (no assessment)

22We have captured no evidence for the following interventions:

23• Establish riparian buffers.

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