The impact of rare and common species on the functional diversity of forest birds in a palm-dominated landscape in the Eastern Amazon

IF 1.3 4区 环境科学与生态学 Q3 ECOLOGY
Beatriz Tavares Pinheiro , Sara Miranda Almeida , Marcos Pérsio Dantas Santos
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引用次数: 0

Abstract

The advance of industrial agriculture in the Amazon is a major threat to biodiversity. It is causing intense deforestation to make way for cattle ranching and monocultures such as oil palm. Forest loss can alter the distribution and population size of rare species, which are often limited in number or range, affecting the functional structure of communities and the ecosystem services they provide. Here, we assessed the contribution of rare and common species to the functional diversity of forest bird communities in a landscape dominated by oil palm plantations. We sampled birds in plantations and forest fragments in the eastern Amazon, Brazil. A total of 232 bird species were recorded, 198 in the fragments and 53 in the plantations. We calculated a rarity index for each species occurring in forest fragments, combining local abundance, geographic range, and habitat specificity. We calculated functional richness (FRic), functional originality (FOri), functional specialization (FSpe), and community-weighted trait means (CWM), and then compared these metrics between forest and plantation communities across three scenarios: 1) total species pool recorded in forest versus plantation, 2) removal of the rarest species, and 3) removal of common species. Removal of rare species increased functional diversity but decreased functional redundancy. Conversely, removal of common species decreased FOri and FSpe values, demonstrating that common forest bird species make unique functional contributions. We conclude that the loss of both rare and common species affects forest bird communities. Therefore, conservation and protection of forested areas is essential to ensure ecosystem health and resilience.
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来源期刊
CiteScore
3.60
自引率
0.00%
发文量
57
审稿时长
>0 weeks
期刊介绍: Acta Oecologica is venue for the publication of original research articles in ecology. We encourage studies in all areas of ecology, including ecosystem ecology, community ecology, population ecology, conservation ecology and evolutionary ecology. There is no bias with respect to taxon, biome or geographic area. Both theoretical and empirical papers are welcome, but combinations are particularly sought. Priority is given to papers based on explicitly stated hypotheses. Acta Oecologica also accepts review papers.
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