Interdisciplinarity, spatial and temporal scales, and life-style: considerations of three observers of the «Congrès du Rhône 2006». -The spea/cers and the part/'c/panfs of the Congrès du Rhône (organised by tbe /ndusfria/ Sendees of Geneva /'n dune 20061 seem to agree that hofef/'c approaches (i.e., bas/'n-sca/e sfrafeg/'esl are necessary for an effect/ve management of the Rhone ecosystem w/'fh/'n a frameworb of susfa/'nab/e deve/opment. The u/f/'mafe success of such strafeg/'es depends,

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... ; on some factors which have not been d/scussed /n suff/c/ent depth during the «Congrès». T"hese factors /'nc/ude (but are not necessar/'/y //'m/'fed tof; a better /'nferd/sc/p//nary cooperat/'on among the d/fferent /nferesfed part/es; a better appreciation of the fempora/ sca/es at which natura/ env/'ronmenfa/ processes occur; a recognition that susfa/nab/e deve/opment cannot come w/'fbouf some associated soc/'o-econom/'ca/ costs; and a correct/on of the anfhropocentr/c vision of nature. Some cons/derat/ons on these issues are offered /'n the present essay as a confr/but/on for deve/op/'ng effect/ve, egu/'fab/e and soc/a//y accepfab/e, /ong-term management sfrateg/'es for the Rhone river bas/'n.