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E. Ulrich ; L. Dalstein ; M. Gunthardt Goerg ; P. Vollenweider ; S. Cecchini ; N. Vas ; K. Sjöberg ; T. Skarman ; G. Karlsson | Fontainebleau : ONF | 2006Objectifs. Jusqu'en 1999, la France ne comptait aucun dispositif de surveillance de l'ozone en site forestier. Dans le cadre du règlement européen n°3528/86, ce projet a permis de tester et d'approfondir les méthodes proposées par le PIC « Forêt[...]ouvrage
E. Landolt | Zurich, CH : ETH | Ver. Geobotanischen Institutes der Eidg. Techn. Hochschule, heft 71 | 1987This volume deals with the family of lemnaceae (duckweeds). the first paper talk about taxonomical problems : a brief systematic treatment of the lemnaceae accompanied by the determination key is followed by the description of six new taxa. an o[...]congrès/colloque
W. Calmano ; P. Roeters ; INTERNATIONAL ASSOCIATION ON WATER QUALITY ; T. Vellinga ; 2nd IAWQ specialist group conference on contaminated sediments, Rotterdam, NER, 7-11 September 1997 (1997; NER) | Oxford, GBR : Pergamon Press | 1998Ports and navigation authorities all over the world are faced with problems of maintenance dredging and handling contaminated sediments which pose a threat to the environment. Among the solutions of this problem now being pursued in many locatio[...]article/chapitre/communication
P. Morello | 1996L'étude de la modification du couvert végétal s'avère une tâche d'autant plus délicate qu'il faut prendre en compte toutes les interactions agissant au sein de l'écosystème, l'intensification de la gestion forestière et la substitution de certai[...]rapport
NOVA SCOTIA DEPARTMENT OF NATURAL RESOURCES NOVA SCOTIA CAN FOREST RESEARCH SECTION | S.E. | Forest research report n° 45 | 1993The results of a survey to determine the effect on crop growth of weeding operational plantations with one glyphosate application, are as follows: 1) Crop tree diameter and volume were 32 and 71% ; respectively greater in the weeded blocks. 2) T[...]congrès/colloque
Commission of the European Communities ; J. Hall ; Effects of organic contaminants in sewage sludge on soil fertility, plants and animals, Braunschweig (D), on 6-8 June 1990 (1990; DEU) ; D. Sauerbeck ; P. L'hermite | Luxembourg, LUX : Office for official publications of the european communities | 1992Sewage sludge production in Europe will continue to rise as a result of higher environmental standards, making disposal increasingly difficult in the future. A considerable part of this sludge is spread beneficially on agricultural land as an or[...]