Differential speciation rates, colonization time and niche conservatism affect community assembly across adjacent biogeographical regions

Autor(es)

Benicio, Ronildo A. ^{[1, 2]} ; Provete, Diogo B. ^[3] ; Lyra, Mariana L. ^{[4, 5]} ; Heino, Jani ^[6] ; Haddad, Celio F. B. ^{[4, 5]} ; Rossa-Feres, Denise de C. ^[7] ; da Silva, Fernando R. ^[8]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Programa Posgrad Ecol & Recursos Nat, Sao Carlos, SP - Brazil

^[2] Univ Fed Ceara, Lab Herpetol, Fortaleza, Ceara - Brazil

^[3] Univ Fed Mato Grosso do Sul, Inst Biociencias, Campo Grande, MS - Brazil

^[4] Univ Estadual Paulista, Inst Biociencias, Dept Biodiversidade, UNESP CAUNESP, Rio Claro, SP - Brazil

^[5] Univ Estadual Paulista, Inst Biociencias, Ctr Aquicultura, UNESP CAUNESP, Rio Claro, SP - Brazil

^[6] Finnish Environm Inst, Freshwater Ctr, Oulu - Finland

^[7] Univ Estadual Paulista UNESP, Dept Zool & Bot, Sao Jose Do Rio Preto, SP - Brazil

^[8] Univ Fed Sao Carlos, Dept Ciencias Ambientais, Lab Ecol Teor Integrando Tempo Biol & Espaco LET, Sorocaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Biogeography; v. 48, n. 9, p. 2211-2225, SEP 2021.
• Citações Web of Science: 4

Resumo

Aim To test the importance of evolutionary and biogeographical processes in shaping the assembly of local frog communities in two adjacent regions (hereafter, coastal and inland regions) with different historical signatures. We asked two main questions: (1) why does the coastal region harbour more frog species than the inland region? and (2) how do these processes affect the spatial variation in taxonomic, phylogenetic and functional diversities within and across these regions? Location southeastern Brazil. Taxon Anurans. Methods We generated time-calibrated phylogenies to estimate the relative timing of colonization, rates of speciation, extinction and dispersal between regions. We tested the phylogenetic signal in reproductive modes. These traits were also used to examine variation in functional composition across sites. We calculated metrics of phylogenetic community structure that capture the relationships near the root and tips of the tree. Finally, we tested the relationships between the spatial variation of multiple diversity dimensions and topographic complexity, Pleistocene and contemporary climate gradients for three spatial extents: (1) only coastal sites; (2) only inland sites; and (3) the two regions combined. Results The structure of communities was related to the region in which they are located, with regional pool size being two times greater for the coastal than inland region. This pattern seems to reflect both a higher speciation rate and earlier colonization time in the coastal than in the inland region. Reproductive modes within frog genera were less variable than among families, indicating phylogenetic signal. This pattern influenced local community assembly within the inland region due to the absence of species with direct development, tadpoles in bromeliads or eggs and tadpoles in streams in this region. Main conclusions Macroevolutionary dynamics, such as colonization time, differences in speciation rates and niche conservatism generate the disparity in species richness and assembly patterns of local communities between regions, but not within regions, in which local communities were more similar to each other. (AU)

• Processo FAPESP: 13/50714-0 - Influência de processos ecológicos e evolutivos na estruturação de comunidades de anfíbios em diferentes escalas espaciais e temporais
• Beneficiário: Fernando Rodrigues da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Jovens Pesquisadores
• Processo FAPESP: 15/11821-0 - Efeitos históricos e contemporâneos na distribuição filogenética de anuros na mata atlântica
• Beneficiário: Ronildo Alves Benício
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 13/50741-7 - Diversidade e conservação dos anfíbios brasileiros
• Beneficiário: Célio Fernando Baptista Haddad
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático
• Processo FAPESP: 17/26162-8 - Diversidade e conservação dos anfíbios brasileiros
• Beneficiário: Mariana Lúcio Lyra
• Modalidade de apoio: Bolsas no Brasil - Programa Capacitação - Treinamento Técnico