Erfassung von Okosystemparametern zur Vorhersage der Verteilung von neuen Chemikalien in der Umwelt.. (Assessment of ecosystem parameters for predicting the distribution of new environmental chemicals)
Analyse de système ; Cycle géochimique ; Ecologie appliquée ; Ecosystème ; Graphe ; Géochimie ; Géographie physique ; Milieu dulçaquatique ; Modèle ; Nuisance ; Pollution ; Système
The potential ecotoxicity of chemicals must be based on the determination of their persistence and distribution characteristics on the one hand, the mode of immission and the structure of the ecosystems affected on the other. Therefore the present
of the comprehensive analysis are summarized in three synthetic ecosystem models formulated in graph form. The explanatory text first describes the input and state variables of the atmospheric system (I) and its linkage with the adjacent systems II and III. The second
Analyse de système ; Biocénose ; Ecologie quantitative ; Ecosystème ; Entropie ; Forêt tropicale ; Géographie physique ; Modèle ; Phytocénose ; Résilience ; Stabilité ; Structure dissipative ; Système ; Zone intertropicale
Comparative ecological analyses of the species diversity of old tropical rain forest ecosystems show that their biocenoses are the more likely to have both low fluctuations and low resilience the more homogeneous the environment in space and time
to maintain stability of the total ecosystem in the most efficient way. A corresponding and complementary analysis of plant associations in the U.S.A. and Germany permits to develop a generalized model of phytocenoses as stationary dissipative structures