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Portail d'information géographique

Résultats de la recherche (24 résultats)

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)

part deals with the specific sorption and desorption processes in soils as controlled by moisture and microbial activity, the third describes flux phenomena as related to interactions and cascading of matter and energy between essential components
1982

Solutional and wind erosion forms on limestone in the Central Namib Desert

: les rillkarren sur les blocs calcaires face aux vents du SW et aux brouillards de l'Atlantique Sud et les cannelures exposées aux vents de NE. Ces formes semblent actives et non héritées.
1982

Influence of roughness elements and soil moisture on the resistance of sand to wind erosion in Aridic soils and geomorphic processes.

Data from wind tunnel tests show that the presence of roughness elements (gravels, spheres) on a dry, flat sand surface affects the erosional capacity of the wind. Their influence is twofold: they activate erosion when their density is small
1982

Community structure of litter anurans in a tropical forest, Makokou, Gabon: a preliminary analysis in the minor dry season

. Toutes les espèces se nourrissent activement de fourmis et (Bufo camerunensis excepté) de termites. Le régime d'Anthroleptis sylvatica, de Cardioglossa leucomystax et de Phrynobatrachus batesi est très voisin, comme l'indique la mesure du chevauchement de
1982