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Table I
List of 150 trend words: the 50 most important words, i.e., with the highest correlation, are in bold.
* Title words (n = 17) that were also among the 150 trend words in a previous study based on ecology journals (Nobis and Wohlgemuth, 2004); ** title words (n = 6) that were among the 50 strongest trend words in that previous study.