Dear all:

I am interested in plotting species relative abundance versus niche position
along an environmental gradient. I would like the species' position along
the the x-axis (environment gradient position) to be ranked according to
each species' niche optima. I have seen this type of plot in publications,
but I am not sure how to make a nice plot in R.

Any thoughts are greatly appreciated.

Thank you for your time and consideration,
Laura

-- 
" Genius is the summed production of the many with the names of the few
attached for easy recall, unfairly so to other scientists"

- E. O. Wilson (The Diversity of Life)

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