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    Wyświetlanie 1-8 z 8
    Tytuł:
    Natural and anthropogenic changes in the environment during the Holocene at the Kraków region (Southern Poland) from study of mollusc assemblages
    Autorzy:
    Alexandrowicz, Witold Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/2058731.pdf
    Data publikacji:
    2021
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    mollusc assemblages
    environmental changes
    anthropogenic pressure
    Holocene
    Southern Poland
    Opis:
    Malacological analysis was used to reconstruct Holocene environmental changes from profiles of calcareous tufa and fluvial deposits exposed in the Kobylanka stream valley, several kilometres west of Kraków in southern Poland. The abundant and diversified mollusc fauna was characterized by clear variability within the vertical succession where five types of molluscan assemblages were distinguished. The pattern of sedimentary and molluscan facies allowed characterization of two main intervals of environmental change during Holocene. In the lower interval, until the end of the Middle Holocene, human activity was not detected and environmental processes were controlled by natural factors. In the upper interval, corresponding to the Late Holocene, human impact can be seen, in the form of rapid deforestation and agricultural development. Anthropogenic impact has been particularly evident during the last millennium. The mollusc assemblages studied allowed accurate reconstruction of natural and anthropogenic factors affecting the natural environment.
    Źródło:
    Geological Quarterly; 2021, 65, 1; 9
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Molluscan assemblages in sediments of a landslide on Majerz Hill near Niedzica (Inner Carpathians, Southern Poland) – phases of development and environmental changes
    Autorzy:
    Alexandrowicz, Witold Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/2055854.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    landslide
    molluscan assemblages
    environmental changes
    Holocene
    Podhale Basin
    Southern Poland
    Opis:
    A detailed malacological analysis was made of sediments associated with a small landslide which had developed on the north-eastern slope of Majerz Hill near Niedzica (Inner Carpathians, Southern Poland). The age of the development and environmental changes associated with particular phases of the landslide was determined by means of radiocarbon dating. The analyses made it possible to distinguish two periods of landslide activation falling on the turn of the Early/Middle Holocene and on the Late Holocene (probably on the Iron Age Cold Period). These phases are closely related to periods of increased mass movements, both of landslides and debris flows in other European mountains, stages of glacial advance in the Alps, periods of increased fluvial activity in rivers and elevated water levels in European lakes. The molluscan assemblages also enabled the reconstruction of environmental conditions before the landslide formation, during periods of dormancy, and after the end of its activity.
    Źródło:
    Geology, Geophysics and Environment; 2022, 48, 1; 51--68
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mollusc faunas of lake deposits in Gorzów Wielkopolski (NW Poland) as an indicator of environmental changes during Eemian and Early Weichselian
    Autorzy:
    Alexandrowicz, Witold Paweł
    Skoczylas, Sylwia
    Sobczyk, Artur
    Stefaniak, Krzysztof
    Kotowski, Adam
    Przybylski, Bogusław
    Ciszek, Dariusz
    Badura, Janusz
    Urbański, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/2060111.pdf
    Data publikacji:
    2021
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    palaeolake
    malacofauna
    environmental changes
    Eemian interglacial
    Early Weichselian
    NW Poland
    Opis:
    During the construction of the S-3 road near Gorzów Wielkopolski, a sedimentary succession of the Eemian Interglacial and the older part of the Weichselian Glaciation were exposed. The succession, ~22 m thick, consists of lacustrine and fluvioglacial deposits. Lake sediments, mainly calcareous gyttja with peat intercalations, represent the infills of two palaeolakes. The almost complete skeleton of a forest rhinoceros, Stephanorhinus kirchbergensis, and a bone of the fallow deer Dama dama were found in the older lake deposits. Mollusc shells were numerous in both lake sequences, analysis of which revealed two types of assemblage, representing the coastal, littoral zone of a shallow lake with a muddy bottom. The sequence of mollusc communities observed in vertical succession allowed reconstruction of environmental changes during deposition. Several hydrological changes have been recognized within the palaeolake, especially water level fluctuations probably due to climate change.
    Źródło:
    Geological Quarterly; 2021, 65, 3; 65: 36
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Malacological indicators of anthropogenic and natural environmental changes of the Podhale Basin during the last 2000 years. Studies in the Rogoźnik Stream valley (the Carpathian Mountains, Southern Poland)
    Autorzy:
    Alexandrowicz, Witold Paweł
    Skoczylas-Śniaz, Sylwia
    Laskowska, Paulina
    Powiązania:
    https://bibliotekanauki.pl/articles/27310137.pdf
    Data publikacji:
    2023
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    fluvial deposits
    molluscs
    environmental changes
    human impact
    Podhale Basin
    Southern Poland
    Opis:
    The lithological and malacological studies covered sediments forming the low terrace of the Rogoźnik Stream in the northwest part of the Podhale Basin. This terrace is characterised by a uniform structure within a significant part of the valley. Three layers of gravel and four layers of sandy and silty muds were found there. A rich and diversified malacofauna was discovered in fine-grained sediments. Its analysis allowed us to characterise environmental conditions during sediment deposition. The age of the individual components of the sedimentary sequence was determined by radiocarbon dating. A distinct change was found in the upper intervals of the sequence, corresponding to the warm phase of the Medieval Climate Optimum. This period is associated with the robust development of agriculture, and processes related to human activities became the main factor shaping the environment, influencing the course of geological processes, and changing the taxonomical and ecological structure of the fauna and flora assemblages found in this area.
    Źródło:
    Geology, Geophysics and Environment; 2023, 49, 3; 261--280
    2299-8004
    2353-0790
    Pojawia się w:
    Geology, Geophysics and Environment
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of malacological analysis to reconstruction of regional and local environmental changes : the Cisowa Skała locality (the Carpathians, southern Poland)
    Autorzy:
    Skoczylas-Śniaz, Sylwia
    Alexandrowicz, Witold Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/2127367.pdf
    Data publikacji:
    2022
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    karst sediments
    molluscs
    environmental changes
    Holocene
    Podhale Basin
    Pieniny Klippen Belt
    Opis:
    An isolated limestone hill (Cisowa Skała), located in the Podhale Basin in southern Poland, has yielded mollusc shells and small vertebrate bones in deposits filling small karst forms such as rock shelters, characteristic molluscan assemblages can be identified, the succession of which reflects changes in the environment and also microhabitat variations depending on local factors, such as slope exposure and type of vegetation. These local factors markedly affect regional environmental trends determined primarily by climate change and, during the last several hundred years, also by human activity. Such malacological analysis enables effective palaeogeographical reconstructions, both on the scale of geographical regions and for microhabitats.
    Źródło:
    Geological Quarterly; 2022, 66, 1; art. no. 5
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Record of environmental changes and fluvial phases in the Late Holocene within the area of Podhale (the Carpathians, southern Poland) : studies in the Falsztyński valley
    Autorzy:
    Alexandrowicz, Witold Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/2058641.pdf
    Data publikacji:
    2019
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    environmental changes
    molluscs
    flood phases
    Late Holocene
    Podhale Basin
    Southern Poland
    Opis:
    The Falsztyński valley, in the eastern part of Podhale, Poland includes a low terrace spanning the stream channel, the structure of which has been studied in nine profiles. Five gravel levels and five mud levels with plant and abundant mollusc remains are described, temporally constrained by ten radiocarbon dates. The terrace deposits represent the terminal part of the Atlantic Phase and all of the Late Holocene. The mollusc analysis helped identify phases of environmental change, notably one in the Middle Ages connected with intensive settlement activities in the area of Podhale. These include deforestation, affecting mollusc communities with replacement of forest assemblages by open-country species. The gravel levels records increased fluvial activity periods correlated with humid climate phases. It is possible to distinguish five such periods corresponding to the transition of the Atlantic and Subboreal phases, the middle part of the Subboreal Phase, the transition of the Subboreal and Subatlantic phases, the younger part of the Subatlantic Phase, and the last 200 years. These correspond to the periods of increased fluvial activity in the valleys of other Carpathian rivers.
    Źródło:
    Geological Quarterly; 2019, 63, 4; 629--642
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of malacological analysis to reconstruct climate fluctuations and human activity during the Middle and Late Holocene. Research in the valley of the Grajcarek stream (Pieniny Mts., southern Poland)
    Autorzy:
    Alexandrowicz, Witold Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/24024714.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    environmental changes
    molluscs
    flood phases
    holocene
    Pieniny Mts.
    Carpathians
    zmiany środowiskowe
    mięczaki
    holocen
    Pieniny
    Karpaty
    Opis:
    The scope of this analysis included fluvial sediments of the low terrace of the Grajcarek stream in the Małe Pieniny Mts. (Western Carpathians). The structure of the terrace has been surveyed in five profiles. The sedimentary sequence includes alternating layers of gravel and calcareous mud with a maximum thickness of up to 2.2 m. A rich and varied malacofauna has been found in the mud. The age of the sediments was determined using the radiocarbon method. The sediments that make up the terrace cover the younger part of the Middle Holocene and the entire Late Holocene. The analysis of the malacofauna has allowed for the characterization of environmental changes. The most important of them dates back to the Middle Ages and is associated with the phase of intensive settlement in the Pieniny Mts.. It is indicated by deforestation and the related change in the composition and structure of malacocoenoses manifested by the replacement of forest communities by ones with open-country species. Gravel horizons are records of flood periods correlated with wet climatic phases. It is possible to distinguish six such phases covering the following periods: 6600–6100 y cal BP, 5500–5100 y cal BP, 4500–4100 y cal BP, 3200–2300 y cal BP, 2000–900 y cal BP and 400–200 y cal BP. They correspond to the periods of increased fluvial activity of rivers, intensification of mass movements, advances of alpine glaciers and the increase in the water level in lakes.
    Źródło:
    Acta Geologica Polonica; 2023, 73, 1; 85--102
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Malakofauna martwicy wapiennej we wsi Rybna koło Krakowa (południowa Polska) jako wskaźnik zmian środowiska południowej krawędzi wyżyny krakowsko-częstochowskiej
    Malacofauna of calcareous tufa in Rybna near Kraków (southern Poland) as an indicator of environmental changes in the southern margin of the Kraków-Częstochowa Upland
    Autorzy:
    Alexandrowicz, Witold Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/2061431.pdf
    Data publikacji:
    2021
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    martwice wapienne
    malakofauna
    zmiany środowiska
    holocen
    południowa Polska
    calcareous tufa
    malacofauna
    environmental changes
    Holocene
    southern Poland
    Opis:
    Liczne skorupki mięczaków znaleziono w odsłonięciu martwic wapiennych we wsi Rybna k. Krakowa. W 12 próbkach rozpoznano występowanie ponad 2500 okazów należących do 49 gatunków. W obrębie sekwencji malakologicznej możliwe było wydzielenie trzech zespołów faunistycznych. Najstarszy z nich (fauna M) odpowiada chłodnemu okresowi wczesnego holocenu i reprezentuje zacienione siedliska o dużej wilgotności, porośnięte krzewami lub rzadkimi lasami o znacznym udziale drzew iglastych. Jego cechą charakterystyczną jest obecność gatunków typowych dla zimnych faz klimatycznych. Drugi, młodszy zespół (fauna F) jest typowy dla ciepłego i wilgotnego klimatu fazy atlantyckiej. Charakteryzuje on siedliska zwartych lasów mieszanych i liściastych. Pojawiają się tu liczne formy o wysokich wymaganiach termicznych. Najmłodszy zespół (fauna O) wskazuje na rozległe antropogeniczne wylesienia na obszarze depozycji martwic wapiennych. Ta zmiana cech siedlisk przyrodniczych była prawdopodobnie związana z fazą intensywnego zasiedlenia okolic wsi Rybna i rozwoju rolnictwa we wczesnym średniowieczu.
    Numerous molluscan shells were found in an outcrop of calcareous tufa in the village of Rybna near Kraków. In 12 samples, over 2500 specimens belonging to 49 taxons were found. Three types of molluscan assemblages can be distinguished within the malacological sequences. The oldest of them (M-type fauna) corresponds to the cold period of the Early Holocene and represents shady habitats of significant moisture, covered with bushes or sparse coniferous forests. Its characteristic feature is the presence of cold-tolerant species typical for cold climate phases. The second, younger assemblage (F-type fauna) is typical for the warm and moist climate of the Atlantic Phase. It characterizes habitats of dense mixed and deciduous forests. Numerous forms of high thermal requirements are found here. The youngest assemblage (O-type fauna) implies extensive anthropogenic deforestations in the surrounding area. This change in the characteristics of natural environment was most likely associated with a phase of intense settlement in the village of Rybna and development of agriculture during the Middle Ages.
    Źródło:
    Biuletyn Państwowego Instytutu Geologicznego; 2021, 478; 1--14
    0867-6143
    Pojawia się w:
    Biuletyn Państwowego Instytutu Geologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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