Action

Build bird-perches to enhance natural seed dispersal

How is the evidence assessed?
  • Effectiveness
    50%
  • Certainty
    13%
  • Harms
    0%

Study locations

Key messages

  • One replicated, randomized, controlled study in Brazil found that building perches for birds increased species richness and abundance of new tree seedlings.

 

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, randomized, controlled study in 2001-2002 in a degraded subtropical Araucaria forest in Brazil (Zanini & Ganade 2005) found that building bird perches increased species richness and abundance of new seedlings. Species richness (perches: 0.6-2.0; no perch: 0.2-0.8/m2) and abundance (perches: 0.7-2.7; no perches: 0.2-1.7) were higher under perches. Data were collected in 2002 in four pairs of perch and control plots (1 × 1 m) in each of 10 blocks randomly located inside a 2 ha area. Perches were 2 m tall with a 16 cm diameter pole and were placed in the centre of each perch plot.

    Study and other actions tested
Please cite as:

Agra, H., Schowanek, S., Carmel, Y., Smith, R.K. & Ne’eman, G. (2020) Forest Conservation. Pages 323-366 in: W.J. Sutherland, L.V. Dicks, S.O. Petrovan & R.K. Smith (eds) What Works in Conservation 2020. Open Book Publishers, Cambridge, UK.

 

Where has this evidence come from?

List of journals searched by synopsis

All the journals searched for all synopses

Forest Conservation

This Action forms part of the Action Synopsis:

Forest Conservation
Forest Conservation

Forest Conservation - Published 2016

Forest synopsis

What Works 2021 cover

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, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

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