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An álise da estrutura filogen ética de metacomunidades

An álise da estrutura filogen ética de metacomunidades. Valério Pillar Departamento de Ecologia Universidade Federal do Rio Grande do Sul Porto Alegre vpillar@ufrgs.br http://ecoqua.ecologia.ufrgs.br. Communities. W. Species. Communities. Ecological variables. E.

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An álise da estrutura filogen ética de metacomunidades

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  1. Análise da estrutura filogenética de metacomunidades Valério Pillar Departamento de Ecologia Universidade Federal do Rio Grande do Sul Porto Alegre vpillar@ufrgs.br http://ecoqua.ecologia.ufrgs.br

  2. Communities W Species Communities Ecological variables E Species traits and phylogeny may be related Phylogeny Traits B Species How to include phylogeny in the analysis?

  3. Scaling up of traits and phylogeny to communities Phylogeny Communities Traits W B Species Species Communities Ecological variables E

  4. Scaling up of traits and phylogeny to communities Phylogeny Communities Traits W B OTUs OTUs Communities Ecological variables E OTU = Operational Taxonomic Unit (individuals, local populations, species, or any other units to which the phylogeny, trait, and community description refer)

  5. Scaling up of phylogeny to communities Phylogeny Communities W OTUs Communities Ecological variables E

  6. (PE) Testing (PE) against a null model s OTUs S Fuzzy sets s OTUs n communities n communities t taxa P Q’ x = DP W E p var. DE

  7. (PrndE) Testing (PE) against a null model • Randon permutation of row vectors of Q, keeping each vector intact. • W and E remain constant. • P((PrndE) (PE)) s OTUs S Fuzzy sets s OTUs n communities n communities (PE) ? t taxa P Q’rnd x = DPrnd W E p var. DE A large number of permutations of rows in Q

  8. Silvertown (2006): Traits related to  niches would be conservative. If this is true, by removing the effect of phylogeny, the correlation between TCAP and the ecological gradient should vanish.

  9. E P T E T P

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