Geologia, rzezba i hydrografia - czynniki warunkujace zroznicowanie siedliskowe w dolinie Gornej Narwi

The investigations were carried out in the Upper Narew river valley over the length of about 120 km - from the state frontier to the Biebrza mouth. The valley is paludified in the middle part of this sector and is cut there by many - channel river and his in the remaining sectors the muddy-alluvial and alluvial character. The Upper Narew river valley is developed in Quaternary sediments. Many geomorphological forms have the polygenetic and transitional character. The valley was formed during the areal deglaciation of the Warta glacier. The result of the deglaciation course is lack of possibility for creating large area of the soligenous habitats and therefore the fluviogenous habitats prevail in the valley. The relief of the valley bottom is the important factor which caused the differentiation of the habitats. It is an effect of the deglaciation course of the Warta glacier and also the later changes during the Wisła glaciation period and the changes during the Holocene. The connection between ground waters and river waters is observed in the Upper Narew river valley. The connection is also between ground waters and intermoraine aquifers waters. On the large areas of valley the intermoraine aquifers waters supply the ground waters.