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Résultats 181-190 de 217
Response of soil ciliates to fertilization in Black Forest spruce stands
1992
Lehle, E. (Ulm Univ. (Germany). Abt. Oekologie und Morphologie der Tiere) | Jans, W. | Funke, W.
Climatic variation and growth of Norway spruce (Picea abies (L.) Karst.) and Silver fir (Abies alba Mill.) in the Black Forest
1992
Spiecker, H. (Forstliche Versuchs- und Forschungsanstalt Baden-Wuerttemberg, Freiburg (Germany))
Uptake and localization of nutritive and potentially toxic minerals in ectomykorrhizas of forest trees
1992
Kottke, I. (Tuebingen Univ. (Germany). Inst. fuer Botanik, Spezielle Botanik-Mykologie) | Oberwinkler, F.
Physiological and biochemical investigations into the yellowing of spruce at higher altitudes. Pt. 5: Effects of combined stress at the Freudenstadt site and of single stress factors on components of the photosynthetic apparatus
1992
Siefermann-Harms, D. (Kernforschungszentrum Karlsruhe (Germany). Inst. fuer Genetik und Toxikologie) | Steegborn, J.
The dependence of the success of natural regeneration on upper soil conditions and degree of acidity in declined forest stands of the Black Forest
1992
Littek, T. (Freiburg Univ. (Germany). Waldbau-Institut)
Sucrose metabolism (diurnal, annual) in spruce needles under different environmental conditions (OTC-experiment "Edelmannshof")
1992
Egger, B. (Tuebingen Univ. (Germany). Botanisches Inst. Abt. Physiologische Oekologie der Pflanzen) | Effenberger, S. | Einig, W. | Hampp, R.
Physiological and cytomorphological investigations of undamaged and damaged spruce trees in the Northern Black Forest
1992
Wild, A. (Mainz Univ. (Germany). Inst. fuer Allgemeine Botanik) | Tietz-Siemer, S.
Histological and histochemical investigations on the nutrient dynamics in forest trees with regard to the "New-type forest decline".5. Further results on the behaviour of calcium and magnesium in various tissues
1992
Fink, S. (Freiburg Univ. (Germany). Inst. fuer Forstbotanik und Baumphysiologie)
CO2-gas-exchange and transpiration of open grown Norway spruce during the year in higher elevations of the Southern Black Forest under local air conditions with and without O3 respectively
1992
Abetz, P. (Freiburg Univ. (Germany). Inst. fuer Waldwachstum) | Kuenstle, E. | Wolfart, A.
Gas exchange and metabolite pools of the carbohydrate and energy metabolism in needles of spruce with different decline symptoms (diurnal and annual changes)
1992
Einig, W. (Tuebingen Univ. (Germany). Botanisches Inst. Abt. Physiologische Oekologie der Pflanzen) | Groschupp, C. | Zimmer-Rinderle, U. | Egger, B. | Hampp, R. | Lichtenthaler, H.K.
