Effectiveness of perches in promoting bird-mediated seed dispersal for natural forest regeneration: a systematic review
Jelaine L Gan e outros, 2025 · Environmental Evidence
Perches placed or conserved in degraded areas increased seedling species richness by a standardized mean difference of 0.80 compared to unperched control plots.
Estimativa · seedling richness, Hedges' g
0,800 [0,360; 1,25]
Hedges' g
- Desenho
- Meta-análise. Three-level random-effects meta-analysis of control versus perch sites across published studies
- População
- Degraded landscapes globally, concentrated in Brazil, Spain, and the United States, across studies published between 1983 and 2022
- Amostra
- 31 · studies
Onde está o número
Review Findings > Meta-analysis > Seedling richness; Section 'Review Findings > Meta-analysis > Seedling richness', first paragraph
When examining perches in general (i.e., model without moderator), we found significant positive effect of perches on seedling richness (k = 31, g = 0.80, 95% CI = 0.36–1.25)
Contexto
What changed: Use of perches (isolated trees, shrubs, snags, or artificial posts/wires) to attract bird dispersers and promote natural forest regeneration. Comparison: Plots located under perches versus paired open control plots without perches. Limits: High heterogeneity (I² = 84.6%), positive effects were driven mostly by natural perches, and over 40% of included studies exhibited high risk of bias.
Caminho no grafo
- FamíliaProvisão direta
- TipoRestauração e manejo de ecossistemas
- EixoPerda de biodiversidade
MAGI só cita evidência deste instrumento
Lugares do estudo
- Brazil · País · BR
- Spain · País · ES
- United States · País · US
- Licença
- CC0
- Revisão
- Extraído por máquina, não revisadoExtraído por: gemini-3.8-flash, 2026-10-23