Species Turnover through Time: Colonization and Extinction Dynamics across Metacommunities

Autor(es)

Nuvoloni, Felipe Micali ^[1] ; Fazzio Feres, Reinaldo Jose ^[2] ; Gilbert, Benjamin ^[3]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, Programa Posdrad Biol Anim, 2265 Cristovao Colombo St, Sao Jose Do Rio Preto - Brazil

^[2] Univ Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, Dept Bot & Zool, 2265 Cristovao Colombo St, Sao Jose Do Rio Preto - Brazil

^[3] Univ Toronto, Dept Ecol & Evolutionary Biol, 25 Harbord St, Toronto, ON M5S 3G5 - Canada

• Tipo de documento: Artigo Científico
• Fonte: American Naturalist; v. 187, n. 6, p. 786-796, JUN 2016.
• Citações Web of Science: 3

Resumo

Island biogeography and metacommunity theory often use equilibrium assumptions to predict local diversity, yet nonequilibrium dynamics are common in nature. In nonequilibrium communities, local diversity fluctuates through time as the relative importance of colonization and extinction change. Here, we test the prevalence and causes of nonequilibrium dynamics in metacommunities of mites associated with rubber trees distributed over large spatial (>1,000 km) and temporal (>30-60 generations) scales in Brazil. We measured colonization and extinction rates to test species turnover and nonequilibrium dynamics over a growing season. Mite metacommunities exhibited nonequilibrium dynamics for most months of the year, and these dynamics tracked climatic conditions. Monthly shifts in temperature of more than 1 degrees C resulted in nonequilibrium dynamics, as did mean temperatures outside of two critical ranges. Nonequilibrium dynamics were caused by a change in colonization with temperature change and changes in both colonization and extinction with absolute temperature. Species turnover showed different trends; high relative humidity increased both colonization and extinction rates, increasing turnover but not nonequilibrium dynamics. Our study illustrates that testing nonequilibrium dynamics can provide new insights into the drivers of colonization, extinction, and diversity fluctuations in metacommunities. (AU)

• Processo FAPESP: 13/09600-0 - Revisão taxonômica e análise dos processos espaciais e ambientais sobre a distribuição das espécies de ácaros em seringueiras no Brasil
• Beneficiário: Felipe Micali Nuvoloni
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 10/19935-1 - Influência da distribuição geográfica nos padrões estruturais da comunidade de ácaros em seringueira (hevea brasiliensis muell arg. euphorbiaceae) no brasil.
• Beneficiário: Felipe Micali Nuvoloni
• Modalidade de apoio: Bolsas no Brasil - Doutorado