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Accumulation of cadmium by some crops around a factory producing phosphate fertilizers in Sfax (Tunisia) | Accumulation du cadmium par quelques especes vegetales cultivees aux environs d'une usine d'engrais phosphates a Sfax (Tunisie)
1999
Mezghani, I. (Faculte des Sciences de Fax (Tunisie). Departement de Biologie) | Boukhris, M. | Chaieb, M.
La pollution des ecosystemes terrestres par du cadmium d'origine industrielle (usine d'engrais phosphates) se traduit par des taches necrotiques au niveau des feuilles et par une accumulation importante de cet element dans ces feuilles et dans les horizons superficiels des sols. A proximite de la source d'emission, les taux de cadmium dans le sol depassent 10 fois les valeurs normales. Au niveau des feuilles, elles sont 10 a 30 fois plus elevees que chez les temoins et dependent de la nature de l'espece, de la distance (correlation negative) et des conditions topographiques
Show more [+] Less [-]Throughfall deposition of nitrogen and sulfur in a Jeffrey pine forest in the San Gabriel Mountains, southern California
1999
Fenn, M.E. | Kiefer, J.W. (US Department of Agriculture, Forest Service, Pacific Southwest Research Station, Forest Fire Laboratory, 4955 Canyon Crest Drive, Riverside, CA 92507 (USA))
Airborne trichloroacetic acid and its deposition in the catchment area of the Caspian sea
1999
Weissflog, L. | Manz, M. | Popp, P. | Elansky, N. | Arabov, A. | Putz, E. | Schuurmann, G. (UFZ-Centre for Environmental Research, Department of Chemical Ecotoxicology, PF 2, 04301 Leipzig (Germany))
Atmospheric nitrogen deposition at a conifer forest: response of free amino acids in Engelmann spruce needles
1999
Calanni, J. | Berg, E. | Wood, M. | Mangis, D. | Boyce, R. | Weathers, W. | Sievering, H. (Global Change and Environmental Quality Program, Department of Environmental Sciences, Center for Environmental Sciences, Campus Box 172, University of Colorado at Denver, PO Box 173364, Denver, CO 80217-3364 (USA))
Needle surface characteristics and element contents of Norway spruce in relation to the distance of emission sources
1999
Trimbacher, C. | Weiss, P. (Federal Environment Agency, Spittelauer Laende 5, A-1090 Vienna (Austria))
Foliar Ca, Mg, Al, N and delta15N as indicators of ecological damage in a spruce-fir stand subjected to chronic N additions
1999
Pardo, L.H. | Schaberg, P.G. (USDA Forest Service, Burlington, VT (USA)) | McNulty, S.G. | Aber, J.D.
Indicators for monitoring forest soil acidification and the impact of acidification on needle chemistry and coniferous tree growth
1999
Lundstroem, U.S. | Nyberg, L. | Danielsson, R. | Hees, P.A.W. van | Soederberg, U.
Pine needle chemistry near a large point SO2 source in Northernmost Europe
1999
Koptsik, G. | Koptsik, S. (Moscow State Univ. (Russia)) | Aamlid, D.
Differences between sun and shade foliage assimilation based on their specific leaf area
1999
Urban, O. (Akademie Ved, Brno (Czech Republic). Ustav Ekologie Krajiny)
Changes of epicuticular waxes due to forest latent damage caused by air pollution
1999
Bednarova, E. (Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Lesnicka a Drevarska Fakulta)