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What Works in Conservation 2021

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

15. Terrestrial mammal conservation

15.3 Threat: Energy production and mining

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Likely to be beneficial

Restore former mining sites

1Twelve studies evaluated the effects of restoring former mining sites on mammals. Eleven studies were in Australia and one was in the USA.

2COMMUNITY RESPONSE (8 STUDIES)

3Species richness (8 studies): A review in Australia found that seven of 11 studies indicated that rehabilitated areas had lower mammal species richness compared to unmined areas. Four of five replicated, site comparison studies, in Australia, found that mammal species richness was similar in restored mine areas compared to unmined areas or higher in restored areas (but similar when considering only native species). One study found that species richness was lower in restored compared to in unmined areas. A replicated, controlled study in Australia found that thinning trees and burning vegetation

415.3 Threat: Energy production and mining

5as part of mine restoration did not increase small mammal species richness. A replicated, site comparison study in Australia found that restored mine areas were recolonized by a range of mammal species within 10 years.

6POPULATION RESPONSE (5 STUDIES)

7Abundance (5 studies): A review of rehabilitated mine sites in Australia found that only two of eight studies indicated that rehabilitated areas had equal or higher mammal densities compared to those in unmined areas. One of three replicated, site comparison studies, in the USA and Australia, found that small mammal density was similar on restored mines compared to on unmined land. One study found that for three of four species (including all three native species studied) abundance was lower in restored compared to unmined sites and one study found mixed results, including that abundances of two out of three focal native species were lower in restored compared to unmined sites. A replicated, controlled study in Australia found that thinning trees and burning vegetation as part of mine restoration did not increase small mammal abundance.

8BEHAVIOUR (2 STUDIES)

9Use (2 studies): A replicated, site comparison study in Australia found that most restored former mine areas were not used by koalas while another replicated site comparison study in Australia found quokka activity to be similar in revegetated mined sites compared to in unmined forest.

10OTHER (1 STUDY)

11Genetic diversity (1 study): A site comparison study in Australia found that in forest on restored mine areas, genetic diversity of yellow-footed antechinus was similar to that in unmined forest.

12Assessment: likely to be beneficial (effectiveness 40 %; certainty 50 %; harms 0 %).

https://www.conservationevidence.com/​actions/​2490

Unknown effectiveness

Translocate mammals away from sites of proposed energy developments

13Two studies evaluated the effects of translocating mammals away from sites of proposed energy developments. One study was in Brazil and one was in Australia.

14COMMUNITY RESPONSE (0 STUDIES)

15POPULATION RESPONSE (0 STUDIES)

16BEHAVIOUR (2 STUDIES)

17Behaviour change (2 studies): A study in Brazil found that lesser anteaters translocated away from a hydroelectric development site remained close to release sites while a study in Australia found that at least one out of eight chuditchs translocated from a site to be mined returned to its site of capture. Assessment: unknown effectiveness (effectiveness 50 %; certainty 23 %; harms 5 %).

https://www.conservationevidence.com/​actions/​2517

Use repellents to reduce cable gnawing

18One study evaluated the effects of using repellents to reduce cable gnawing. This study was in the USA.

19COMMUNITY RESPONSE (0 STUDIES)

20POPULATION RESPONSE (0 STUDIES)

21BEHAVIOUR (0 STUDIES)

22OTHER (1 STUDY)

23Human-wildlife conflict (1 study): A randomized, replicated, controlled study in the USA found that repellents only deterred cable gnawing by northern pocket gophers when encased in shrink-tubing.

24Assessment: unknown effectiveness (effectiveness 40 %; certainty 30 %; harms 0 %).

https://www.conservationevidence.com/​actions/​2502

No evidence found (no assessment)

25We have captured no evidence for the following interventions:

26• Use electric fencing to deter mammals from energy installations or mines.

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