Dear List.
In their great book, Bocard et al. (2010) mention that the function
vegan::anova.cca() can be used to test the significance of each axis of a
CCA or RDA, and that based on this test it is possible to choose the best
analysis between the two, if I undertood it clearly. But I'm not sure how to
interpret the output of this function. I run both a CCA and RDA using the
formula for data input in both funcions and the first axis of both analysis
were non-significant.
What should I do? Or alternatively, If the first axis of CCA were
significant and that of RDA weren't, should I choose CCA instead of RDA?

Thank you for your attention!

-- 
Atenciosamente,
*Diogo Borges Provete*

==============================
Biólogo
Mestre em Biologia Animal (UNESP)
Doutorando PPG Ecologia e Evolução
Laboratório de Ecologia de Insetos (sl. 222)
Departamento de Ecologia
Instituto de Ciências Biológicas - ICB 1
Universidade Federal de Goiás, campus II - UFG
Goiânia-GO
CP: 131
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Brazil

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