Zmiany układu koryta Chodelki koło Chodlika w późnym vistulianie i holocenie

In this paper the evolution of paleogeographic models of the middle part of the Chodelka valley near Chodlik is presented. In the relief of the bottom valley clear traces of palaeochannels are present. Lithological and palynological analysis helped distinguish two phases in the development of this river. The first phase started in Late Vistulian, and continued in the early Holocene. At that time Chodelka was an anastomosing river. But later it changed its channel pattern to the meandering one. Nowadays the Chodelka river cannot develop naturally, because its trough is largely limited by flood bank.Artykuł nie zawiera abstraktu w języku polski

Rekonstrukcja zmian paleośrodowiskowych w rejonie jeziora Syczyńskiego na podstawie analiz paleoekologicznych

On the basis of lake sediments studies (palynological, subfossil Ostracoda and geochemical analyses) the main stages of the palaeoenvironmental changes were obtained. Lake Syczyńskie is situated in the Pagóry Chełmskie region. Defined changes of plants, Ostracoda and variability of the main characteristics sediments (content of organic matter and calcium carbonate) showed high compatibility with widely recognised stages of climate change during the Late Glacial and the holocene. The detailed analysis allowed indicating the main phases of biological development of the lake based on the processes of eutrophication, hydrological changes in the lake catchment and temperature conditions. Determined Ostracoda species in the sediments of Lake Syczyńskie, among other Cytherissa lacustris, Metacypris cordata and Fabaeformiscandona protzi is the basis of concluding about significant changes in the functioning of the lake occurring under the influence of climate changes.W oparciu o wyniki badań osadów jeziornych (analiz palinologicznych, składu gatunkowego subfosylnych zespołów Ostracoda i podstawowych analiz geochemicznych) określono główne etapy zmian paleośrodowiskowych w rejonie Jeziora Syczyńskiego, położonego w obszarze Pagórów Chełmskich. Określone w badaniach etapy zmian szaty roślinnej w otoczeniu jeziora, zmiany składu gatunkowego subfosylnych zespołów małżoraczków (Ostracoda) w ujęciu jakościowym oraz zmienność podstawowych cech akumulowanych osadów (zawartość materii organicznej i węglanu wapnia) wykazały dużą zgodność z powszechnie wyróżnianymi etapami zmian klimatycznych późnego glacjału i holocenu. Wykonane analizy pozwoliły na wskazanie najważniejszych etapów biologicznego rozwoju jezior z uwzględnieniem procesów eutrofizacji, hydrologicznych zmian w zlewni jeziornej i warunków termicznych. Zidentyfikowane w osadach Jeziora Syczyńskiego gatunki małżoraczków, między innymi Cytherissa lacustris, Metacypris cordata i Fabaeformiscandona protzi dały podstawę wnioskowania o zasadniczych zmianach w funkcjonowaniu zbiornika wodnego zachodzących pod wpływem zmian klimatycznych

Współczesny opad pyłku lipy i klonu jako przyczynek do palinologicznej interpretacji gleb kopalnych

This paper aims to explore the modern deposition of lime and maple pollen in various plant communities as compared to the results obtained in palynological analyses of the Holocene paleosols in Kaczórki (the Middle Roztocze) and the Błędów Desert which are characterized by very high amounts of the pollen of these trees. The research shows that a high annual deposition of both lime and maple pollen on the soil surface is possible. This deposition far surpasses the average pollen values recorded in the Holocene but is not as high as those recorded in fossil soils. In relation to paleosols in Kaczórki such results show that lime and maple were important components of forests surrounding dune and simultaneously point to the fact that the deposition of pollen in these soils was a complex process.Artykuł nie zawiera abstraktu w języku polski

Hydrological changes in the Lublin Polesie during the Late Glacial and Holocene as reflected in the sequences oflacustrine and mire sediments

The paleoecological research of biogenie sediments sampled in the different lake-mire ecosystems of the Łęczna Włodawa Lake District were the basis of studies on hydrological changes during the Late Glacial and Holocene. The lithological differentiation (spatial and temporal) of lacustrine and mire sediments in the studied sites indicates that the hydrological changes were of local nature. The investigations also evidence a specific functioning of the lakes in this region. Lake basins were formed as a result of the ground ice degradation and the transformation of groundwater circulation in the Late Glacial. The total area of lakes in the Lake District was the largest from the Younger Dryas to the Subboreal chronozone. The gradual lowering ofwater level during the early Holocene resulted in the transformation of sedimentation process, and in the development of typologically differentiated mires and lacustrinc-mire complexes

Zmiany układu koryta Chodelki koło Chodlika w późnym vistulianie i holocenie

In this paper the evolution of paleogeographic models of the middle part of the Chodelka valley near Chodlik is presented. In the relief of the bottom valley clear traces of palaeochannels are present. Lithological and palynological analysis helped distinguish two phases in the development of this river. The first phase started in Late Vistulian, and continued in the early Holocene. At that time Chodelka was an anastomosing river. But later it changed its channel pattern to the meandering one. Nowadays the Chodelka river cannot develop naturally, because its trough is largely limited by flood bank.Artykuł nie zawiera abstraktu w języku polski

Współczesny opad pyłku lipy i klonu jako przyczynek do palinologicznej interpretacji gleb kopalnych

This paper aims to explore the modern deposition of lime and maple pollen in various plant communities as compared to the results obtained in palynological analyses of the Holocene paleosols in Kaczórki (the Middle Roztocze) and the Błędów Desert which are characterized by very high amounts of the pollen of these trees. The research shows that a high annual deposition of both lime and maple pollen on the soil surface is possible. This deposition far surpasses the average pollen values recorded in the Holocene but is not as high as those recorded in fossil soils. In relation to paleosols in Kaczórki such results show that lime and maple were important components of forests surrounding dune and simultaneously point to the fact that the deposition of pollen in these soils was a complex process.Artykuł nie zawiera abstraktu w języku polski

Climate-related variations in the composition of the Late Glacial and early Holocene sediments of Lake Perespilno (eastern Poland)

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