Mots-clés : écologie statistique, analyse triadique partielle, AFC de FOUCART, série de tables de contingence, compromis, stabilité, espace, temps, structure des communautés.
STUDY OF THE TEMPORAL STABILITY OF SPATIAL STRUCTURES BY ANALYSING SERIES OF TOTALLY PAIRED FAUNISTIC TABLES.
ABSTRACTIn this paper, we investigate the potential of partial triadic analysis (PTA), already introduced in ecology by THIOULOUSE and CHESSEL (1987). we also present the analysis of a series of contingency tables (FOUCART, 1978) which represents a different approach since it considers the frequency distribution of species rather than their abundance. We illustrate these two K-set methods by an example in stream ecology. We demonstrate the power of these methods for depicting the temporal evolution of the spatial structures.