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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Short-term successional dynamics of a macroalgal community in a stream from northwestern Sao Paulo State, Brazil

Título (Português): Dinâmica sucessional em curto período da comunidade de macroalgas em um riacho da região noroeste do Estado de São Paulo‚ Brasil
Texto completo
Autor(es):
Borges, Fabio Renato [1] ; Necchi, Jr., Orlando [1]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Estadual Paulista, Dept Bot & Zool, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Acta Botanica Brasilica; v. 22, n. 2, p. 453-463, APR-JUN 2008.
Citações Web of Science: 4
Resumo

(Short-term successional dynamics of a macroalgal community in a stream from northwestern Sao Paulo State, Brazil). This investigation aimed to describe a short term (70 days) ecological succession event of a macroalgal community in a stream from northwestern Sao Paulo state (20 degrees 43'S; 49 degrees 13'W) after artificial disturbance (removal); evaluate if community structure characteristics were similar before and after the experimental period; compare the successional process of two experimental stream segments (partly and completely disturbed segments, PDS and CDS, respectively), simulating medium (partial) and high impact (complete removal) disturbances. In terms of colonization time, Oedogonium sp. was classified as successionally indifferent, whereas Chaetophora elegans (Roth) C. Agarth and Batrachospermum delicatulum (Skuja) Necchi et Entwisle were classified as late successional forms for CDS; for PDS the only difference was that Oedogonium sp. was classified as late successional. In terms of successional strategy, Oedogonium sp. was classified as a C-S strategist, whereas C. elegans and B. delicatulum were regarded as S strategists for both stream segments. Temperature was the most influential variable for most species and biological variables, with temperature increases probably favouring reproduction rates. In general, community structure recovery was not complete at the end of succession. This short-term study was consistent with the deterministic process of succession, since the succession trajectory was predictable, because species richness and abundance, growth forms and life strategies followed a definite pattern. (AU)

Processo FAPESP: 02/12476-5 - Padrões de distribuição espacial e dinâmica sucessional de comunidades de macroalgas lóticas tropicais
Beneficiário:Fabio Renato Borges
Linha de fomento: Bolsas no Brasil - Mestrado