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EN
Results of archaeological studies from the territory of Poland show that prehistorical settlements were often founded on the banks of lakes and mires. Botanical composition of organic deposits allows reconstructing historical plant communities and palaeohydrological conditions of the settlement, the subject of research was a peatland situated in the neighborhood of the archaeological site at Łany Małe. The latter is located on hillslopes of the Kłodnica valley (Upper Silesia, southern Poland). Peat formation at the Łany Małe site took place in the Pre-Boreal Period as an effect of the valley floor paludification. In the Mesolithic and Neolithic Periods as well as the Early Bronze Age, swampy alder forests occupied the entire area of the peatland. At that time, the fen surface was relatively easily accessible for humans, especially for people of the Funnel Beaker Culture in the Middle Neolithic Period. It was then when, probably, the ground water level dropped down and peat decay processes took over those of peat production. In the Hallstatt Period, during the presence of the Lusatian Culture settlement, there was subsequent increase in biotope moisture. Forest communities became more open and trees were gradually displaced by grasslike plants, especially of sedge (Carex) genus. In the Fate Roman Period (the Przeworsk Culture settlement) and in the early Middle Ages, the peatland was subject to inundation due to frequent flooding, the peat accumulation was then halted by the delivery of fine-grained products of soil erosion.
EN
Field surveys for aquatic plants, invertebrates and vertebrates along the banks of Kiełpińskie Lake and sourrounding oxbows were conducted in June – August 2010. The study area is located in the Vistula River valley near Warsaw in central Poland. The results document the richness of flora and fauna species in the J. Kielpińskie reserve and adjacent aquatic habitats. A large number of protected species of plants and vertebrates was recorded in the area, including amphibians, birds and mammals that are of particular importance to the European community, such as the fire-bellied toad, little bittern, western marsh harrier, beaver and otter. Among aquatic plant communities, the community of "water lilies" Nupharo-Nymphaeetum was distinguished as the most valuable. The chain of oxbow lakes connected by a small stream forms an important ecological corridor. The presence of protected species and rare plant communities associated with the aquatic environment requires a responsible approach to the conservation of these habitats, located in close proximity to a large urban area. It also requires a holistic approach to nature protection in the reserve. In this case, not only should Kiełpińskie Lake be protected, but also its surroundings, which form elements of an ecological corridor.
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