Hi all,

 

I have site data with plant species cover and am looking for trends. I'm
kind of new to this, but have done lots of reading and can't find an answer.

I tried decorana (I know it's been replaced by ca.) and see a trend, but I'm
not sure what it means. Is there a way to get the loadings/eigenvectors of
the axes (like in PCA)? Is there a way to do this with rda() too? How about
with cca()?  I know I can do scores() or summary() but that's not exactly
the info I need.  I basically want to interpret the axes.

Also after doing envfit() and plotting, is there a way to label sites based
on certain environmental factors?  For instance, I want to highlight plots
that have a certain treatment (or have different colored points for the
different treatments.  



I don't know if it matters but I used downweight() before applying
decorana().

 

down <-downweight(spp2009bttl, fraction = 5)

down.dca <- decorana(down)

scores(down.dca)

summary(down.dca)



Thanks so much!

 

-Akane

 


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