DOI: 10.1016/j.foreco.2015.03.049
Scopus记录号: 2-s2.0-84929945816
论文题名: Effects of habitat loss on taxonomic and phylogenetic diversity of understory Rubiaceae in Atlantic forest landscapes
作者: Andrade E.R. ; Jardim J.G. ; Santos B.A. ; Melo F.P.L. ; Talora D.C. ; Faria D. ; Cazetta E.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 349 起始页码: 73
结束页码: 84
语种: 英语
英文关键词: Deforestation
; Forest cover
; Habitat fragmentation
; Originality
; Phylodiversity
; Rare species
Scopus关键词: Biodiversity
; Deforestation
; Ecosystems
; Plants (botany)
; Forest cover
; Habitat fragmentation
; Originality
; Phylodiversity
; Rare species
; Forestry
; angiosperm
; biodiversity
; coexistence
; deforestation
; extinction risk
; forest canopy
; forest cover
; forestry modeling
; habitat conservation
; habitat fragmentation
; habitat loss
; landscape
; phylogenetics
; rare species
; species diversity
; species richness
; taxonomy
; understory
; Atlantic Forest
; Bahia
; Brazil
; Rubiaceae
英文摘要: Habitat loss has been long recognized as a major driver of the current species extinction crisis, but to date few studies have estimated deforestation thresholds above which biodiversity negatively respond to the changes in landscape configuration. In this study, we used a very representative understory plant family (Rubiaceae) to evaluate the effects of forest cover reduction in the landscape on taxonomic and phylogenetic alpha and beta diversity, species originality, and composition. We selected nine Atlantic forest sites in southern Bahia, Brazil, immersed in landscapes ranging from 9% to 71% of remaining forest cover. We established a 50. ×. 100. m plot in each site and identified all the Rubiaceae individuals. Forest cover reduction at the landscape scale is strongly and negatively related to the number of individuals, species, and genera of Rubiaceae. Our model predicts that every 10% decreasing in landscape forest cover results in the loss of about three species and 74 individuals of understory Rubiaceae. Canopy openness at the plot level increased linearly with the decrease of forest cover in the landscape. A trend of linear decrease of the phylogenetic diversity with the loss of forest cover was also observed, increasing the co-occurrence of close relatives in more deforested landscapes. Furthermore, we found a reduction in the presence of species with higher values of originality along the gradient of forest cover, as a consequence of species richness reduction. Regardless of the geographical distances, areas with similar values of forest cover were different in composition (β-diversity) and phylogenetic relationship (phylogenetic β-diversity), indicating that even highly deforested landscapes contribute to the regional diversity. We concluded that less forested areas are losing species richness and diversity, and as a consequence species originality, and presenting a general trend of phylogenetic impoverishment at the landscape scale. However, regional conservation initiatives should take all landscapes into account, because they all contribute to taxonomic and phylogenetic beta diversity, to ensure the long-term protection of the irreplaceable evolutionary history of Rubiaceae and the numerous organisms it supports. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65418
Appears in Collections: 影响、适应和脆弱性
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作者单位: PPG Ecologia e Conservação da Biodiversidade, Laboratório de Ecologia Aplicada à Conservação, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado km 16, Ilhéus, BA, Brazil; Departamento de Botânica, Ecologia e Zoologia, Universidade Federal do Rio Grande do Norte, Campus Universitário Lagoa Nova, Natal, RN, Brazil; Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, Cidade Universitária, João Pessoa, PB, Brazil; Departamento de Ecologia Aplicada, Universidade Federal de Pernambuco, Cidade Universitaria, Avenida Prof. Moraes Rego, 123, Recife, PE, Brazil
Recommended Citation:
Andrade E.R.,Jardim J.G.,Santos B.A.,et al. Effects of habitat loss on taxonomic and phylogenetic diversity of understory Rubiaceae in Atlantic forest landscapes[J]. Forest Ecology and Management,2015-01-01,349