The continuum concept of vegetation

Introduction 13 0 The individualistic hypothesis .. ......... 133 The continuum 1 13 5 Evidence bearing on the continuum concept . 140 Interspecific association 142 Ordination, gradient analysis, and continuum analysis 146 Spatial gradients 147 Environmental gradients 147 Species position index values 148 Community index values ......10 1 Interpretations of unidimensional ordinations 1 ...5 .. 152 M ultidim ensional ordinations 15 3 The current state of the problem 159 Geometric models ..... . . . . . . .. . . . . . . . . . . . . . . . . . 161 Continuity and homogeneity 14 164 Classification and ordination 167 Assessment ....170 Literature Cited .- 173

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