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    Wyświetlanie 1-7 z 7
    Tytuł:
    Spore-pollen and phytoplankton analysis of the Upper Miocene depositsfrom Józefina (Kraków-Silesia Upland, Poland)
    Autorzy:
    Worobiec, E.
    Gedl, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059037.pdf
    Data publikacji:
    2010
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Polska
    Miocene
    palaeoenvironment
    stratigraphy
    freshwater algae
    pollen grains
    Opis:
    Pollen grains, spores and phytoplankton from the Neogene succession of a borehole at Józefina (northern part of the Kraków–Silesia Upland, Poland) have been studied. The composition of the pollen spectra and the mutual ratio of palaeotropical and arctotertiary elementssuggest a Late Miocene age. Among the pollen grains, there are significant elements characteristic of riparian forests (Pterocarya, Caryaand Liquidambar) and mixed mesophytic forests (Pinus, Fagus and Carpinus). Such a pollen and spore association suggests a temperateand mid-wet climate, cooler than during the Early and Mid Miocene period, but still warmer than the present-day climate of Poland. Thismakes the pollen-spore association from Józefina comparable with XII climatic phase represented by the Carpinipites-Juglandaceaespore-pollen zone. The occurrence of aquatic plants and freshwater algae (e.g., Sigmopollis, Zygnemataceae and desmids) indicates alacustrine palaeoenvironment.
    Źródło:
    Geological Quarterly; 2010, 54, 1; 41-54
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Palynoflora and palaeoenvironment of the early Miocene palaeolake from the Bełchatów mine, central Poland
    Autorzy:
    Worobiec, Elżbieta
    Worobiec, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/2201201.pdf
    Data publikacji:
    2022
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Palynology
    palaeoclimate
    palaeovegetation
    Neogene
    freshwater algae
    central Europe
    Opis:
    The Bełchatów lignite deposits are a rich archive allowing palaeoenvironmental, palaeoecological and palaeoclimatic reconstructions from the Neogene and Quaternary periods. We describe the results of palynological studies (including non-pollen palynomorphs) of eight samples from the lower Miocene KRAM-P 211/214 collection of plant macroremains. The results of this palynological analysis are consistent with the results of previous studies of plant macroremains and significantly enrich our knowledge of vegetation and palaeoenvironment. Both studies indicate the presence of a freshwater body (a moderately large and deep lake) surrounded by wetland vegetation (including swamp forests with Glyptostrobus, Taxodium, Nyssa and Osmunda) and upland mesophytic forests. Evergreen or at least semi-evergreen forest communities grew along the ancient shores of the lake and on the slopes of the Mesozoic calcareus rocks surrounding the lake. In the lake, green algae (Pediastrum, Tetraedron and some Botryococcus) and freshwater peridinoid dinoflagellates were major components of the algal community. The same lake was the source of previously identified animal remains: freshwater fishes, molluscs, and mammals, including Megachiroptera bats. Our analysis shows that the climate was subtropical and humid, with an estimated mean annual temperature of 16.8–17.8°C.
    Źródło:
    Geological Quarterly; 2022, 66, 4; art. 66, no. 32
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Freshwater algae of the Thala Hills oasis (Enderby Land, East Antarctic)
    Autorzy:
    Starmach, Karol
    Powiązania:
    https://bibliotekanauki.pl/articles/2052635.pdf
    Data publikacji:
    1995
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Antarctic
    Enderby Land
    freshwater algae
    Cyanophyceae
    Chrysophyceae
    Xanthophyceae
    Chlorophyceae
    Źródło:
    Polish Polar Research; 1995, 16, 3-4; 113-148
    0138-0338
    2081-8262
    Pojawia się w:
    Polish Polar Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Palaeoenvironment of late Neogene lacustrine sediments at the Gray Fossil Site, Tennessee, USA
    Autorzy:
    Worobiec, E.
    Liu, Y.S.
    Zavada, M. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/191791.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    palaeopalynology
    sinkhole
    non-pollen palynomorphs
    NPPs
    freshwater algae
    palaeoenvironment
    Neogene
    North America
    Opis:
    A new palaeopalynological investigation was conducted on 15 samples from four test-pits at the Gray Fossil Site (Bear Pit, Elephant Pit, Test Pit 2-2010, and Rhino Pit). In total, 50 morpho-species of miospores (including five species of spores, eight species of gymnosperm pollen, and 37 species of an giosperm pollen) and 18 morpho-species of fresh water algal micro-remains were identified. One new morphological species, related to zygospores of the Zygnemataceae, Stigmozygodites grayensis sp. nov., is proposed. The assemblage of fossil algae recovered provides in sights into the palaeoenvironmental conditions of the uppermost (125 cm) part of the Gray Fossil Site sedimentary cover, deposited after the formation of a number of sink holes, and the fill of the palaeosinkholes. Most of the algae identified prefer meso- to eutrophic conditions and are characteristic of stagnant to slowly flowing shallow fresh water. Therefore, the lacustrine fossiliferous sediments at the Gray Fossil Site represent pond deposits. The palaeopalynological analysis revealed differences in the composition of the miospore and algal assemblages of the pits studied, suggesting that the Test Pit 2-2010, Bear, and Elephant pits are similar and may have been formed in the same pond, while the presence of a higher percentage of algae in the Rhino Pit may indicate sedimentation in a separate waterbody.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2013, 83, 1; 51-63
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ temperatury na przyrost biomasy mikroalg słodkowodnych hodowanych w bioreaktorach laboratoryjnych
    Influence of temperature on biomass growth of freshwater microalgae cultured in laboratory bioreactors
    Autorzy:
    Dziosa, K.
    Makowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2073241.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    glony słodkowodne
    biomasa
    temperatura
    bioreaktor laboratoryjny
    freshwater algae
    biomass
    temperature
    laboratory bioreactor
    Opis:
    W pracy przedstawiono wyniki badań wpływu temperatury na wydajność produkcji biomasy alg słodkowodnych. Laboratoryjną hodowlę prowadzono w szklanych bioreaktorach cylindrycznych w temperaturze 26, 28 oraz 30°C. Zawartość biomasy w podłożu hodowlanym oznaczano metodą wagową. Najwyższą efektywność przyrostu biomasy uzyskano prowadząc hodowlę alg w temperaturze 28°C. Wzrost temperatury do 30°C nie powodował zwiększenia produktywności biomasy.
    The paper presents the influence of temperature on the efficiency of freshwater algae biomass production. Laboratory culture was carried out incylindrical glass bioreactors at 26, 28 and 30°C. The content of biomass in the culture medium was determined by dry weight measurement. The highest efficiency of algae biomass growth was obtained at 28°C. The incrase of biomass production with the rise of temperature to 30°C was not observed.
    Źródło:
    Inżynieria i Aparatura Chemiczna; 2015, 4; 152--153
    0368-0827
    Pojawia się w:
    Inżynieria i Aparatura Chemiczna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza palinologiczna mioceńskich wypełnień lejów krasowych w Tarnowie Opolskim na Wyżynie Śląskiej - wyniki wstępne
    Palynological analysis of Miocene infill of karst sinkholes at Tarnów Opolski, Upper Silesian Upland - a preliminary report
    Autorzy:
    Worobiec, E.
    Szulc, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074753.pdf
    Data publikacji:
    2010
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    paleokras
    palinologia
    glony słodkowodne
    paleośrodowisko
    miocen
    Wyżyna Śląska
    paleokarst
    palynology
    freshwater algae
    palaeoenvironment
    Miocene
    Upper Silesian Upland
    Opis:
    Pollen analysis of 16 samples of coaly sediments taken from one of sinkholes developed within the Triassic limestones cropping out at Tarnów Opolski, Upper Silesian Upland has been done. The study revealed a taxonomically rich assemblage of excellently preserved sporomorphs (pollen grains and spores) as well as microfossils of fresh-water algae (mainly Chlorophyta). The pollen analysis made it possible to reconstruct a vegetation growing during sedimentation of deposits filling the studied sinkhole and clear facies succession, from open aquatic (with abundant fresh-water algae) to marshy one (e.g. swamp forests composed of Taxodium, Nyssa and Alnus). Riparian forests dominated by deciduous trees, e.g. Pterocarya, Carya and Liquidambar, grew on wet terrains surrounding the water body. Drier elevated terrains were overgrown by mixed mesophytic forests with small admixture of thermophilous plants. Results of the pollen analysis indicate that during the sedimentation of the sinkhole filling the climate was warm temperate and moderately wet. Recorded sporomorphs and a mutual ratio of arctotertiary and palaeotropical taxa point at a Middle Miocene age of the studied deposit.
    Źródło:
    Przegląd Geologiczny; 2010, 58, 12; 1176-1181
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kopalne zygospory glonów Zygnemataceae (Chlorophyta) z osadów górnego miocenu KWB Bełchatów
    Fossil zygospores of Zygnemataceae algae (Chlorophyta) from the Upper Miocene of the Bełchatów Lignite Mine
    Autorzy:
    Worobiec, E.
    Worobiec, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074571.pdf
    Data publikacji:
    2008
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    analiza pyłkowa
    glony słodkowodne
    zygospory
    glonów Zygnemataceae
    tafonomia
    paleoekologia
    górny miocen
    Bełchatów
    pollen analysis
    freshwater algae
    zygospores
    Zygnemataceae
    taphonomy
    paleoecology
    Upper Miocene
    Opis:
    The Zygnemataceae are an extant family of freshwater filamentous green algae which produce acid-resistant zygospores. Palynomorphs of probable zygnematacean affinity occur in sediments of the Carboniferous to Holocene age (van Geel & Grenfell, 1996). These algae reproduce using four types of spores, but only zygospores and probably aplanospores are acid-resistant and can be preserved in the fossil record. The majority of recent species have zygospores of constant form of three types: elliptical (occurring in genera Debarya and Spirogyra), square (occurring in Mougeotia) or circular (occurring in Zygnema). The zygospores normally have a three-layered wall (exospore, mesospore and endospore), but only mesospore contains a decay and acid-resistant substance (most probably algaenans), so usually only this layer is preserved in fossil state, and is of interest to palynologists. The mesospore layer is smooth or ornamented with various sculptures (Kadłubowska, 1972; Grenfell, 1995). The shape and sculpture are very important features for determination of both the recent and fossil species. Two samples from the Bełchatów Lignite Mine were palynologically examined and two types of probable fossil zygnematacean zygospores, differing in shape, were encountered. The following species have been distinguished: Tetraporina sp., Spintetrapidites quadriformis Krutzsch & Pacltová as well as Ovoidites elongatus (Hunger) Krutzsch, and O. ligneolus Potonié ex Krutzsch. The fossil genus Tetraporina is usually related to the recent zygnematacean algae zygospores of Mougeotia genus, fossil Ovoidites is the nearest the recent zygospores of Spirogyra and Sirogonium, while Spintetrapidites is similar to both zygospores of Zygnemataceae and Tetraedron green algae. Species of recent genera Mougeotia and Spirogyra are usually found in shallow, freshwater, oxygen-rich environments such as ponds, lake margins (paludal or low gradient fluvial), ditches and very slowly moving streams (Kadłubowska, 1972). Occurrence of Tetraporina and Ovoidites zygnematacean zygospores in the material studied from Bełchatów points out at presence of water basin(s) during sedimentation time. That confirms the previous geological results that formation of examined sediments took place in the environment of a meandering river (including ox-bow lakes).
    Źródło:
    Przegląd Geologiczny; 2008, 56, 11; 1000-1004
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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