Summary of the bibliographical analysis (see text for details).

The table gives first the total number of articles examined in each journal, and then the percentages of articles dealing with soil ecology (Total soil), based on modelling (Model), or based on an evolutionary approach (Evolution). In these two latest cases three percentages have been distinguished: total percentages of articles (Total), percentages of articles based on a model or an evolutionary approach within non soil ecology articles (Within non soil) and percentages of articles absed on a model or an evolutionary approach within soil ecology articles (Within soil). Asterisks in the “Model-Within soil” and “Evolution-Within Soil” columns denote a significant difference (χ2 test, df = 1, P<0.05) between the percentages among all non-soil ecology articles (Within non soil) and soil ecology articles (Within soil). Bold characters denote cases for which a journal publishes more model- or evolution-related articles within its non-soil articles than within its soil articles. Dotes in the “Model-Within non soil” and “Evolution-Within non soil” columns denote the fact that soil ecology journals only publish articles related to soil ecology. Impact Factors (IF) are given for 2003.