#Preparing the data prior to RDA
env.z <- subset(env.z, select = -das) # remove the "distance from the source" variable
 
#Running the RDA
?rda
spe.rda <- rda(spe.hel~., data=env.z)

### Extract the results
summary(spe.rda, display=NULL) 
 
#The results are called using summary:
summary(spe.rda, display=NULL) #display = NULL optional