hi. im working on abundance of macroinvertebrates in seagrass community. i am using a 2D MDS to see their resemblances, which are at 60 and 80 percent. however, there are points that deviate from the groups. how should i interpret this? thanks! :D
Hi,
as you my know the MDS is a graphical representation of the similarity matrix, closer points means that these are more similar than some that are further apart. If I get your description right the points that clearly deviate from major clusters are below the threshold of 60% similarity.
There are various ways to see how variation is distributed in your data such as Principal Component Analysis (PCA), ANOSIM, Principal component Analysis (PCO) which may help you to interpret the reasons for the underlying grouping.
Cheers
thanks to everyone who answered. yes i have performed SIMPER to see if any of the species was affected by my variable. i also ran an ANOSIM but no pairwise test results show, it's just the global R value.
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