Action

Action Synopsis: Bat Conservation About Actions

Control invasive predators

How is the evidence assessed?
  • Effectiveness
    80%
  • Certainty
    40%
  • Harms
    0%

Source countries

Key messages

  • One study evaluated the effects of controlling invasive predators on bat populations. The study was in New Zealand.

COMMUNITY RESPONSE (0 STUDIES)

POPULATION RESPONSE (1 STUDY)

BEHAVIOUR (0 STUDIES)

About key messages

Key messages provide a descriptive index to studies we have found that test this intervention.

Studies are not directly comparable or of equal value. When making decisions based on this evidence, you should consider factors such as study size, study design, reported metrics and relevance of the study to your situation, rather than simply counting the number of studies that support a particular interpretation.

Supporting evidence from individual studies

  1. A replicated, before-and-after study in 1993–2015 in a rainforest in Eglinton Valley, New Zealand (O'Donnell et al. 2017) found that ship rat Rattus rattus control resulted in increased survival probabilities of female bats within three long-tailed bat Chalinolobus tuberculatus colonies. Average annual survival probabilities for both adult and juvenile female bats were higher in years with rat control (adult female: 0.82; juvenile female: 0.76) than without (adult female: 0.55; juvenile female: 0.55). Population trends were positive for all three bat colonies when rats were controlled, and negative for when rats were not controlled (data reported as statistical model results). Rats within the roosting ranges of all three bat colonies were poisoned using bait stations in 2006–2009 following high beech Nothofagaceae spp. seedfall and an increase in numbers. Bats were captured annually during the breeding season over 22 summers in 1993–2015 (average 6–8 captures/colony/year). Mark-recapture data were used to calculate survival probabilities.

    Study and other actions tested
Please cite as:

Berthinussen, A., Richardson O.C. and Altringham J.D. (2019) Bat Conservation. Pages 67-140 in: W.J. Sutherland, L.V. Dicks, N. Ockendon, S.O. Petrovan & R.K. Smith (eds) What Works in Conservation 2019. Open Book Publishers, Cambridge, UK.

 

Where has this evidence come from?

List of journals searched by synopsis

All the journals searched for all synopses

Bat Conservation

This Action forms part of the Action Synopsis:

Bat Conservation

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, terrestrial mammals, forests, peatland and control of freshwater invasive species. More are in progress.

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