José Carlos Morante-Filho, Víctor Arroyo-Rodríguez, Edyla R. de Andrade, Bráulio A. Santos,. Eliana Cazetta and Deborah Faria. Appendix S2. Because the ...
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Compensatory dynamics maintain bird phylogenetic diversity in fragmented tropical landscapes
José Carlos Morante-Filho, Víctor Arroyo-Rodríguez, Edyla R. de Andrade, Bráulio A. Santos, Eliana Cazetta and Deborah Faria
Appendix S2. Because the landscapes located in the southern region present lower forest cover than the landscapes in the northern region, we performed an additional analysis with a subset of landscapes that have the same gradient of forest cover (30-98%) in both regions. The analyses were performed only for phylogenetic richness (qD(T)) of non-forest dependent birds, and net related index (NRI) of the entire community because the ANCOVA model best described the response of these two response variables when including all 40 landscapes. Here, we tested four models to assess the relationship between each response variable and forest cover: a null model, a linear model, an analysis of covariance (ANCOVA) model, and a nonlinear model represented by the power law model. We used region (north and south) as categorical variables as well as the interaction between region and forest cover in the ANCOVA model to assess whether the effect of forest cover on each phylogenetic metric varies between study regions. We finally used the same information-theoretic criteria indicated in the main text of this paper to identify the model (i.e., null, linear, nonlinear and ANCOVA) that best described the response of each phylogenetic metric to forest cover and region. Our result shows that the pattern found with this landscape subset (n = 30 landscapes) is similar to that found using the 40 landscapes (Table S2). In particular, there was higher phylogenetic evenness in the complete community with the loss of forest cover, especially in landscapes located in the most degraded rainforest region. Yet, phylogenetic richness of non-forest dependent species increased linearly with forest loss in the southern region, but not in the northern region (Figure S2).
Table S2. Models describing the response of phylogenetic richness (0D(T)) of non-forest dependente birds and phylogenetic structure (NRI) of the complete Community to forest cover. The most parsimonious model is highlighted in bold. Plylogeneticmetrics NRI - Complete community
0D(T)
– Non-forestbirds
Model ANCOVA Null Linear Power law ANCOVA Power law Linear Null
