2 resultados para Upland buzzard ( Buteo hemilasius)

em Adam Mickiewicz University Repository


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This publication constitutes the fruits of National Science Centre research projects (grant no 2011/01/M/HS3/02142 â 6 articles) and the National Programme for the Development of the Humanities (grant no 0108/NPH3/H12/82/2014 â 3 articles). We would like to acknowledge and at the same time express our sincere gratitude for the generosity shown by the following at the Adam Mickiewicz University in making this publication possible: the Dean of the Department of History, Institute of Pre-history and the Eastern Institute.

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The aim of the studies in the Perznica River catchment were relief changes caused by the development of transportation infrastructure. This type of transformation is dependable on the state of economy and the settlements. The development of transportation network in the last two hundred years was examined through the analysis of archival cartographic materials â maps from the years 1789, 1855, 1877, 1935 â and the comparison with the situation from mid 1980s. The Perznica River catchment has an area of 249 km2 and it is located in north-western Poland in the central part of the Drawskie Lakeland macroregion, which belongs to the West Pomeranian Lakeland. The heterogeneous Perznica River catchment relief has a denivelation of 159 m and is within 60 and 219 m a.s.l. The study area is within the ParsÄta River lobe. A number of subzones, whose morphological diversity and diversity of sediments lithofacies is mainly a reflection of areal deglaciation of the continental ice-sheet marginal zone, has been distinguished and these are: ⢠subzone of the internal kame moraine â the undulated moraine upland, diversified by kame forms and kettle holes, ⢠subzone of ice-free space forms â the uplands of kame plateaux, ⢠subzone of melt-out lake basins â Lake Wielatowo basin with a characteristic collar ridge, ⢠morphological levels of the northern Pomeranian sloping surface â mainly flat moraine uplands and small outwashes. The economic development of the Perznica River catchment advanced in close connection with the physical and geographical context, mainly with the relief, soils and hydrological conditions. As a result, the flat moraine uplands and marginal outflow plains, which were easiest to cultivate, have been developed and populated faster than any other. Since the early medieval period, large, compact villages, often centered around big estates, were emerging in those areas. In areas with a high relief energyâkame-melt moraines, ice-free space forms and ridges around melt-out lake basinsâfarming entered on a larger scale from the eighteenth century. Scattered settlements in those areas forced the creation of a dense access road network to farms and fields. In the case of anthropogenic forms of transportation with denivelation exceeding 1 m in the study area, road excavations are present for 37.3 km, road undercuttings for 43.8 km and road embankments for 38.7 km in total length. That gives a high ratio of density of such forms, equal to 2.1 km per kmâ2.