Muñoz, Juan C; Aerts, Raf; Thijs, Koen W; Stevenson, Pablo R; Muys, Bart; Sekercioglu, Cagan H (2013): Contribution of woody habitat islands to the conservation of birds and their potential ecosystem services in an extensive Colombian rangeland. PANGAEA, https://doi.org/10.1594/PANGAEA.788547, Supplement to: Muñoz, JC et al. (2013): Contribution of woody habitat islands to the conservation of birds and their potential ecosystem services in an extensive Colombian rangeland. Agriculture Ecosystems & Environment, 173, 13-19, https://doi.org/10.1016/j.agee.2013.04.006
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The conservation of birds and their habitats is essential to maintain well-functioning ecosystems including human-dominated habitats. In simplified or homogenized landscapes, patches of natural and semi-natural habitat are essential for the survival of plant and animal populations. We compared species composition and diversity of trees and birds between gallery forests, tree islands and hedges in a Colombian savanna landscape to assess how fragmented woody plant communities affect forest bird communities and how differences in habitat characteristics influenced bird species traits and their potential ecosystem function. Bird and tree diversity was higher in forests than in tree islands and hedges. Soil depth influenced woody species distribution, and canopy cover and tree height determined bird species distribution, resulting in plant and bird communities that mainly differed between forest and non-forest habitat. Bird and tree species and traits widely co-varied. Bird species in tree islands and hedges were on average smaller, less specialized to habitat and more tolerant to disturbance than in forest, but dietary differences did not emerge. Despite being less complex and diverse than forests, hedges and tree islands significantly contribute to the conservation of forest biodiversity in the savanna matrix. Forest fragments remain essential for the conservation of forest specialists, but hedges and tree islands facilitate spillover of more tolerant forest birds and their ecological functions such as seed dispersal from forest to the savanna matrix.
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Datasets listed in this publication series
- Muñoz, JC; Aerts, R; Thijs, KW et al. (2013): Basal area of plants observed in plots in Granada, Colombia. https://doi.org/10.1594/PANGAEA.788545
- Muñoz, JC; Aerts, R; Thijs, KW et al. (2013): Relative abundance of birds observed in plots in Granada, Colombia. https://doi.org/10.1594/PANGAEA.788544
- Muñoz, JC; Aerts, R; Thijs, KW et al. (2013): Vegetation characteristics and composition of bird dietary traits of plots in Granada, Colombia. https://doi.org/10.1594/PANGAEA.788546