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The concept of a "climax community" has not been accepted as reality for more than 40-50 years. Frederic Clements was an early botanist examining succession in the first 20 years of the 20th century. It was Clements who developed the concept of the climax: he posited that the habitat and the populations acted upon one another in a reciprocal way until ...


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First, you cannot fully analyze pair-wise correlations between your environmental variables with NA values, and therefore cannot fully discount including covarying variables. If this is the case, you will not be able to know which of the covarying variables is responsible for any trends in your data. Second, I don't believe CCA will work with NA values -- ...



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