During the months of May, June and July, a large sample of necrophageous and carnivorous beetles has been collected in four forests (Belgium, area of Haute-Ardenne, Province of Liège) represented respectively by two beech-grove, an oak plantation
and a spruce forest. The 1376 beetles collected belong to six families and 32 species. Thanks to the establishment of a coefficient of similarity, based on the quantitative analysis of the entomocenosis common to the 4 forest habitats, ties of ecological
affinity between the different habitats have been cleared. Those coefficients of similarity, put up graphically (entomographics) prove that there exist ties of affinity between the beech forest and the picea forest, the oak forest being separated of those 3
Regionalizacia geomorfologickych celkov CSSR z hladiska potencialnej erozie lesnej pôdy. (Regional categorization of Czechoslovak geomorphologic units on the basis of a potential erosion of forest soils)
Important data on potential erosion of forest soils by running water are summarized in all 177 geomorphological units in Czechoslovakia. The Frevert-Zdrazil method of erosion calculation modified by O. Stehlik is applied. The erosion intensity may
Radiocarbon measurements on submerged forest floating chronologies
The submerged forests along the west coast of England and Wales provide a unique source of wood for radiocarbon/dendrochronological studies. We report C age determinations on sequential growth increments from three floating chronologies. A sampling
Introduction to vegetation structure and modifications of tree forms on border habitats of forests is followed by a description of geo-conditions in the Hercynian district. First prerequisite for border habitats is an extrem relief| soil and climate
differenciate the vegetation of them. Rivers rocky valleys, rocks and rubble dumps on basaltic and phonolitic hills and rocky steep slopes in the Triasic hilly country are the most important border habitats of forests of this area. On not calcareous
or calcareous soils on dependence of the climate one can find various complexes of vegetation. They contain bushlike forests, shrubs, forb fringes and xerothermic grasslands. The position of these complexes in the landscape and the relation to zonal vegetation
are represented by many examples. Sociological, distributional and ecological conditions, structure and floristic combination of border forests and forb fringes are characterized.
Wüstungen im Pfälzerwald. Das Beispiel Stüterhof. in Beiträge zur Landeskunde des Rhein-Neckar-Raumes.. (Deserted Settlements in Palatian Forest. The example of Stüterhof)
A mathematical model can be used to simulate the effect of a variation in forest cover on snowmelt runoff and provides important data for basin management. Simulations with the CEQUEAU square-grid system model on a >3000km basin confirm
the possibility to modify snowmelt synchronization between different parts of a basin by changing the distribution and/or percentage of its forest cover. In the given example, if the forest cover had been distributed uniformly so as to occupy 50% or the total area