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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.)

The uncertain role of diversity dependence in species diversification and the need to incorporate time-varying carrying capacities

Texto completo
Autor(es):
Marshall, Charles R. [1, 2] ; Quental, Tiago B. [3]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 - USA
[2] Univ Calif Berkeley, Museum Paleontol, Berkeley, CA 94720 - USA
[3] Univ Sao Paulo, Dept Ecol, BR-05508900 Sao Paulo - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES; v. 371, n. 1691 APR 5 2016.
Citações Web of Science: 27
Resumo

There is no agreement among palaeobiologists or biologists as to whether, or to what extent, there are limits on diversification and species numbers. Here, we posit that part of the disagreement stems from: (i) the lack of explicit criteria for defining the relevant species pools, which may be defined phylogenetically, ecologically or geographically; (ii) assumptions that must be made when extrapolating from population-level logistic growth to macro-evolutionary diversification; and (iii) too much emphasis being placed on fixed carrying capacities, rather than taking into account the opportunities for increased species richness on evolutionary timescales, for example, owing to increased biologically available energy, increased habitat complexity and the ability of many clades to better extract resources from the environment, or to broaden their resource base. Thus, we argue that a more effective way of assessing the evidence for and against the ideas of bound versus unbound diversification is through appropriate definition of the relevant species pools, and through explicit modelling of diversity-dependent diversification with time-varying carrying capacities. Here, we show that time-varying carrying capacities, either increases or decreases, can be accommodated through changing intrinsic diversification rates (diversity-independent effects), or changing the effects of crowding (diversity-dependent effects). (AU)

Processo FAPESP: 12/04072-3 - O papel das taxas de extinção e especiação e o efeito dos diferentes níveis de organização biológica na origem e manutenção da biodiversidade
Beneficiário:Tiago Bosisio Quental
Linha de fomento: Auxílio à Pesquisa - Apoio a Jovens Pesquisadores
Processo FAPESP: 13/50904-3 - Identifying the regulating factors on biodiversity in deep time
Beneficiário:Tiago Bosisio Quental
Linha de fomento: Auxílio à Pesquisa - Regular