Data/hora: 31/05/2024 15:20:11

Biblioteca(s): | Embrapa Cerrados.
Data corrente: | 13/10/1997
Data da última atualização: | 13/10/1997
Autoria: | ARCHER, S.; COUGHENOUR, M.; DALL'AGLIO, C.; WILSON FERNANDEZ, G.; HAY, J.; HOFFMANN, W.; KLINK, C.; SILVA, J. F.; SOLBRIG, O. T.
Título: | Savanna biodiversity and ecosystem properties.
Ano de publicação: | 1996
Fonte/Imprenta: | In: SOLBRIG, O.T.; MEDINA, E.; SILVA, J.F., ed. Biodiversity and savanna ecosystem processes; a global perspective. Heidelberg: Springer Verlag, 1996.
Páginas: | p.207-215.
Idioma: | Inglês
Conteúdo: | The overall question addressed here is the effect of different degrees of biodiversity on the function of savanna ecosystems. Function can be interpreted in two different ways. It can refer to the flow of energy and nutrients through an ecosystem or to the flow of species populations through time, i.e., the persistence of species populations and their properties, which we call the structure of the system. Here we discuss the effect of biodiversity on ecosystem function in this second sense. The role of biodiversity in the flow of energy and nutrients is addressed in Chapter 10. When an ecosystem persists in time we say that it is stable. Stability may be the result of an environment that is invariant, or it may be due to the ability of species populations to persist (either by internal genetic adjustments, or by having broad tolerances) even when external conditions change. Stability has three components: resistance, resilience, and persistence. Each of these terms has a different meaning with respect to is interpretation of system dynamics following a perturbation. Stability can be exhibited by different ecosystem properties. One measure of stability is floristic composition, including not only species combinations, but also diversity, i.e., species richness and evenness (for example as measured by the Shannon index ...
Palavras-Chave: | Savana.
Thesagro: | Biodiversidade; Cerrado; Ecossistema.
Thesaurus Nal: | biodiversity; ecosystems; savannas.
Categoria do assunto: | --
Registro original: | Embrapa Cerrados (CPAC)
Exemplares: | CPAC - (10046-1) - ADD - PL - -- - CRI4407 -  - CRI4407 - DIS