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    Wyświetlanie 1-11 z 11
    Tytuł:
    Early Vistulian vegetation history and climate change at Gutów (Wielkopolska Lowland) from pollen analysis
    Autorzy:
    Malkiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059081.pdf
    Data publikacji:
    2010
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Wielkopolska Lowland
    Early Vistulian
    pollen analysis
    history of vegetation
    climate changes
    Opis:
    Pollen assemblages in peat and silt deposits from a core drilled at Gutów, Wielkopolska Lowland, have been analysed, enabling characterization of the development of vegetation and of palaeoenviromental change. The pollen analysis shows phases with forest and open vegetation communities alternating in response to climate changes. The age of the succession can be related to the stadials and interstadials of the Early Vistulian.
    Źródło:
    Geological Quarterly; 2010, 54, 3; 357-366
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Instability of the environment at the end of the Eemian Interglacial as illustrated by the isopollen maps for Poland
    Autorzy:
    Kupryjanowicz, M.
    Granoszewski, W.
    Nalepka, D.
    Pidek, I. A.
    Walanus, A.
    Balwierz, Z.
    Fiłoc, M.
    Kołaczek, P.
    Majecka, A.
    Malkiewicz, M.
    Nita, M.
    Noryśkiewicz, B.
    Winter, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060182.pdf
    Data publikacji:
    2016
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    palaeoclimate
    intra-interglacial cooling
    vegetation history
    isopolles
    pollen analysis
    Opis:
    Many terrestrial pollen profiles from Poland (and a few pollen records from other parts of Central Europe) show the end of the last interglacial (Eemian, MIS 5e) to have been characterized by climatic and environmental instability. This is expressed by a strong, rapid cooling in the middle part of the pine phase ending this interglacial (E7 regional pollen assemblage zone), and then a re-warming at the very end of this phase, immediately before the transition to the glacial conditions of the last glaciation (Vistulian, Weichselian, MIS 5d). We have characterized the regional distribution of these climatic fluctuations in Poland on the basis of isopollen maps prepared for the Eemian Interglacial based on palynological data from 31 Polish pollen profiles. These maps show unequivocally that the intra-interglacial cooling at the end of the Eemian Interglacial was a transregional phenomenon, which was reflected very clearly by a temporary openness of vegetation across the whole of Poland. It was associated with a distinct decrease in pine forest areas and an increase in birch forests and open communities of cold steppe type with a domination of Artemisia. The pronounced climate and environment instability during the last phase of the Eemian Interglacial may be consistent with it being a natural phenomenon, characteristic of transitional stages. Taking into consideration the currently observed global warming, coinciding with a natural cooling trend, the study of such transitional stages is important for understanding the underlying processes of climate change.
    Źródło:
    Geological Quarterly; 2016, 60, 1; 225--237
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    12 millennia of climatic and human induced vegetation changes in the Lower San Valley near Jarosław (SE Poland) in the light of pollen analysis
    Autorzy:
    Kołaczek, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/2026704.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Sandomierz Basin
    pollen analysis
    vegetation history
    Late Glacial
    Holocene
    human impact
    Ulmus
    Opis:
    Veg e ta tion changes in the Lower San Val ley near Jaros³aw are re con structed from the Youn ger Dryas to the pres ent time on the ba sis of palynological anal y sis of the peat core. The pol len pro file came from a an old riverbed and was sup ple mented by ra dio car bon datings. The Youn ger Dryas and early Preboreal veg e ta tion was char ac ter ised by a high pro por tion of for est com mu ni ties with pine (Pinus sylvestris and P. cembra) and birch (Betula), while patches of open area were dom i nated by the steppe with Ar te mi sia. Cli ma tic ame lio ra tion dur ing the Preboreal chronozone led to the rapid spread of elm (Ulmus), which was prob a bly a dom i nant taxon on the low est ter races of the val ley. Terrestrialization of the wa ter body ex ist ing in the palaeomeaner and the sub se quent be gin ning of peat ac cu mu la tion caused a de - te ri o ra tion in pol len pres er va tion. Hence, the in ter pre ta tion of the pro file sec tion span ning the pe riod be tween the Bo - real and Subatlantic chronozones was se ri ously dis turbed due to se lec tive cor ro sion and the overrepresentation of Pinus sylvestris type and Filicales monolete sporomorphs. Be tween ca. 336 and 1152 AD fluc tu a tions in wood land cover were re corded. Im por tant com po nents in those for ests, de spite the dom i na tion of Pinus sylvestris, were Quercus, Carpinus betulus, Fagus sylvatica and Abies alba. The first pol len grains of ce re als (Cerealia type) were found be fore ca. 1605–1414 BC and may be at trib uted to the ag ri cul tural ac tiv ity of the Neo lithic and/or early Bronze tribes. Pe ri - ods of strong de for es ta tion caused by hu mans were prob a bly re lated to the time when the Tarnobrzeska Group of the Lusatian Cul ture and the Przeworska Cul ture were ac tive. The first groups of Slavs did not sig nif i cantly in flu ence the en vi ron ment, but the sub se quent de vel op ment of those groups led to more vis i ble de for es ta tion, which was trig gered af ter the es tab lish ment of Jaros³aw in the 11th cen tury AD.
    Źródło:
    Studia Quaternaria; 2011, 28; 25-39
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Late Holocene palaeoenvironment of Tse Dura, a Later Stone Age (LSA) rock shelter, north-central Nigeria
    Autorzy:
    Orijemie Emuobosa Akpo, Orijemie
    Powiązania:
    https://bibliotekanauki.pl/articles/2025245.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Microliths
    Vegetation history
    Plant management
    Tiv
    Middle Benue Valley
    Nigeria
    Nauki o Ziemi
    Opis:
    Palynological and archaeobotanical analyses were conducted on excavated sediments from Tse Dura, a Later Stone Age rock shelter in north-central Nigeria with the aim of reconstructing the environment conditions at the site within the last millennium. From 933 ± 29 BP to 802 ± 29 BP, the environment alternated between Guinea savanna with dry conditions, and secondary and riverine forests with humid conditions. During these periods of environmental fluctuations, the LSA populations engaged in the management of economic plants the most significant of which included Dioscorea spp. Pennisetum glaucum and Elaeis guineensis, and exploited wild plants such as Pavetta crassipes, Sarcocephalus latifolius and Lophira cf. lanceolata for dietary and ethnomedicinal purposes. Around 310 ± 30 BP cal, the environment became very wet after which it was succeeded by a drier period. It was during this period that Sorghum bicolor became prominent, and the environment attained its current status dominated by Guinea savanna elements and secondary forests.
    Źródło:
    Studia Quaternaria; 2018, 35; 41-53
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lithology and biostratigraphy of the Holocene succession of Lake Kuži, Vidzeme Heights (Central Latvia)
    Autorzy:
    Kangur, M.
    Koff, T.
    Punning, J.-M.
    Vainu, M.
    Vandel, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059201.pdf
    Data publikacji:
    2009
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Vidzeme Heights
    Haanja Heights
    pollen analysis
    lithological analysis
    vegetation history
    lake level fluctuations
    Opis:
    Holocene sediment profile from a paludified near-shore area of Lake Kńži (Vidzeme Heights, Central Latvia) was investigated using lithological and palaeobotanical (pollen and macrofossil analysis) methods and accelerator mass spectrometry AMS 14C dating. The results of this first comprehensive study of a Holocene sed i ment core from the Vidzeme Heights indicate that at the beginning of the Early and at the end of the Late Holocene the lake level was low and fen peat accumulated around the lake. From ca. 9000 BP up to 1500 BP the mire was flooded and gyttja with interlayers of sand and peat accumulated. The water level fluctuations are clearly represented in the lithological succession and pollen spectra. We compared the L. Kńži pollen diagram with well-studied sites from the Haanja Heights, which have a similar genesis. The most obvious difference in these diagrams is the earlier appearance (9200 BP) of Picea pollen in the L. Kńži profile and its dominance up to 1000 BP. Compara tive analysis of the lithology and pollen spectra from L. Kńži and reference profiles from the Haanja Heights indicate the importance of broad regional factors in influencing the pollen spectra.
    Źródło:
    Geological Quarterly; 2009, 53, 2; 199-208
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Late Glacial and Holocene vegetation and climate history of an alpine wetland on the Qinghai-Tibetan Plateau
    Autorzy:
    Liu, D. L.
    Chen, G.
    Lai, Z.
    Weis, H.
    Zhou, G.
    Peng, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059730.pdf
    Data publikacji:
    2013
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Late Glacial
    Holocene
    Qinghai-Tibetan Plateau
    alpine wetland
    optically stimulated luminescence
    pollen analysis
    Opis:
    This study provides a vegetation and climate history of an alpine wetland in the centre of China’s Qinghai–Tibetan Plateau (QTP) over the last 14.8 ka. High resolution climate proxies include vegetation (pollen), geochemical (Ba, Rb, δ13C) and physical (particle size and magnetic susceptibility) data; optically stimulated luminescence (OSL) and AMS radiocarbon dating were used to reconstruct the environmental changes in the wetland ecosystem. Based on physical and geochemical proxies, the sucession divided into five stratigraphic units encompassing time intervals of 14.76–14.31, 14.31–13.17, 13.17–4.47, 4.47–0.51 and 0.51–0 ka. The average sedimentation rate of all these units was 0.098 mm/a. The study showed that this ecosystem was sensitive to climate change.
    Źródło:
    Geological Quarterly; 2013, 57, 2; 261--268
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Palynology of biogenic sediments of the Eemian Interglacial at Bieganin near Kalisz, Central Poland
    Autorzy:
    Malkiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2058816.pdf
    Data publikacji:
    2003
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Central Poland
    Eemian Interglacial
    pollen analysis
    history of vegetation
    Opis:
    The paper presents palynological data from Bieganin, a village located near Kalisz, Central Poland, where organic sediments were deposited in a subglacial trough dating from the Wartanian Glaciation. The succession of vegetation is characteristic of the Eemian Interglacial. The pollen diagram indicates six local pollen assemblages: B1-Pinus-Betula, B2-Betula-Pinus-Ulmus, B3-Quercus-Corylus, B4 -Corylus, B5-Carpinus-Tilia-Polypodiaceae, B6-Pinus-Picea which correlate well with regional pollen assemblages obtained by Mamakowa (1989b) and Tobolski (1991). The plant succession in Bieganin started in the beginning of the Eemian (zone E1) and ended with the development of coniferous forest (zone E6). The profile does not include the final zone, E7, of the interglacial.
    Źródło:
    Geological Quarterly; 2003, 47, 4; 367-372
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Holocen history of vegetation at “Uroczysko Mokradła” (SW Poland) - paleobotanical research
    Holoceńska historia roślinności "Uroczyska Mokradła" (południowo-zachodnia Polska) - badania paleobotaniczne
    Autorzy:
    Tomaszewska, K.
    Malkiewicz, M.
    Podlaska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/28136.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Opis:
    Two peat bogs were studied in the Bory Dolnośląskie, the forest complex in Lower Silesia (Poland). An Instorf drill was used to collect two peat profiles from the deepest places. The macroremains analysis showed that after the initiation of peat-forming processes phytocoenoses responsible for the deposition of transition sphagnum peat were developed at both locations. Later on, the development of both peat bogs differed. The smaller peat bog continued to develop, whereas the big bog was shifted to ombrotrophic water regime. Therefore, phytocoenoses accumulated 1.3 m of Sphagnum peat. The peat-forming process was initiated at different times in both sites. For the smaller peat bog, it took place during the Atlantic period, while in the case of the larger peat bog – several thousand years later. The first identified forest phytocoenoses in the Atlantic period are mesophilic multi-species deciduous forests. Dry coniferous forests and mixed birch-pine forests grew in dry habitats. Riparian forests occupied lower grounds. In the Subboreal period, the oak–hazel communities initially developed and mixed coniferous forests were partially replaced by light oak forests. The encroachment of spruce, fir, hornbeam, and beech resulted in the development of dry ground forests, including beech–fir woods. The importance of riparian forests increased, whereas in dry grounds pine and mixed coniferous forests continued to occur. In the Subatlantic period, the transformations in forest communities were associated with the spread of hornbeam, beech, and fir and thereby vast fertile habitats were colonized by dry ground communities and beech woods. Pine and mixed forests as well as riparian forests were of lesser importance. Pollen records from the last 500 years showed the clear presence of humans. It was evident from the presence of cereal and weed pollen and from the disturbances in the pollen records caused by peat extraction in the Middle Ages.
    Badano dwa torfowiska, wchodzące w skład „Uroczyska Mokradła” znajdującego się w Polsce, w Borach Dolnośląskich. Z najgłębszych miejsc obu obiektów pobrano świdrem Instorfu po dwa profile. W ich spągu był piasek. Pobrany torf poddano badaniom makroszczątków oraz badaniom palinologicznym. Analizy makroszczątków wykazały, że po zainicjowaniu procesu torfotwórczego w obu obiektach rozwijały się fitocenozy odpowiedzialne za odłożenie torfu przejściowego. Później drogi rozwoju w każdym obiekcie przebiegały inaczej. W przypadku torfowiska mniejszego utrzymany został ten sam kierunek rozwoju (torfowisko przejściowe), natomiast torfowisko większe przeszło na ombrotorficzną gospodarkę i fitocenozy odłożyły 1.3 m torfu wysokiego. Proces torfotwórczy obu obiektów został zainicjowany w różnym czasie. W przypadku torfowiska mniejszego – w okresie atlantyckim (9000–5800 lat kalendarzowych), natomiast większe rozpoczęło rozwój kilka tysięcy lat później. Pierwsze rozpoznane fitocenozy leśne w okresie atlantyckim to mezofilne wielogtunkowe lasy liściaste z udziałem dębu, lipy, klonu i topoli oraz z leszczyną, kaliną i kruszyną w warstwie podszytu. Na siedliskach suchych występowały bory suche i mieszane sosnowo-brzozowe z dębem i świerkiem. W obniżeniach terenu rosły lasy łęgowe. W okresie subborealnym zaznaczyło się powolne ustępowanie wiązu, lipy, jesionu i sosny, w związku z czym rozwinęły się zbiorowiska dębowo-leszczynowe, a bory mieszane częściowo zastąpione zostały przez widne lasy dębowe. Dodatkowo wkraczanie świerku, jodły, grabu i buka spowodowało rozwój lasów w typie grądów, m.in. bukowo-jodłowych. Wzrosło znaczenia lasów łęgowych, ale na terenach suchych wciąż występowały bory sosnowe i mieszane. W okresie subatlantyckim odnotowano rozprzestrzenienie się graba, buka i jodły, w związku z czym rozległe, żyzne siedliska opanowane zostały przez zbiorowiska grądowe i buczyny. Zdecydowanie mniejsze znaczenie miały bory sosnowe i mieszane oraz lasy łęgowe. W zapisie pyłkowym ostatnich 500 lat zaznaczyła się wyraźnie obecność człowieka. Świadczy o tym obecność pyłku zbóż, chwastów pól i łąk oraz zaburzenia w zapisie pyłkowym spowodowane wydobyciem torfu w okresie średniowiecza.
    Źródło:
    Acta Agrobotanica; 2016, 69, 3
    0065-0951
    2300-357X
    Pojawia się w:
    Acta Agrobotanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Post-glacial vegetation and environment of the Labanoras Region, East Lithuania: implications for regional history
    Autorzy:
    Gaidamavičius, A.
    Stančikaite, M.
    Kisieliene, D.
    Mažeika, J.
    Gryguc, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059149.pdf
    Data publikacji:
    2011
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    E Lithuania
    post-glacial
    environment
    vegetation dynamics
    plant macrofossil
    pollen
    Opis:
    Multiproxy data (pollen, plant macrofossils, 14C dates and loss-on--ignition measurements) obtained from the Bevardis and Verpstinis lakes in the Labanoras area (East Lithuania) were used to reconstruct a vegetation history and to reveal major environmental features during post-glacial time. Biostratigraphical data indicates ongoing sedimentation in Verpstinis Lake since the final stages of the AllerÝd. The pollen data shows that Pinus-dominated forest flourished during the AllerÝd, while the Younger Dryas was characterized by open shrub/herb/grass vegetation with highly abundant Juniperus. These are evidences of severe climatic conditions in the area. The 14C data suggests that sedimentation started in Bevardis Lake with the onset of the Holocene. Picea immigrated into the Verpstinis Lake surroundings in the Late Glacial, just before 11 500 cal yr BP according to the palynological evidence. The expanding deciduous taxa, e.g., Corylus (ca. 10 200-10 000 cal yr BP), Alnus (8200-8000 cal yr BP), and broad-leaved species with Ulmus (ca. 10 000 cal yr BP), Tilia (7700-7400 cal yr BP) and Quercus (5200 cal yr BP), formed a dense mixed forest where Picea appeared at 7300-6800 cal yr BP. Both diagrams show only negligible human impact. It seems that natural factors were responsible for the formation of vegetation cover and environment in the study area throughout the post-glacial.
    Źródło:
    Geological Quarterly; 2011, 55, 3; 269-284
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diversity of Forest and Shrub Communities as a Result of Site History and of Extensive and Intensive Forest Management (Glinno Ługi Case Study)
    Autorzy:
    Woziwoda, Beata
    Ambrożkiewicz, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/764939.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
    Tematy:
    land use
    abandoned arable fields
    afforestation
    succession of vegetation
    Scots pine
    Central Poland
    Opis:
    The paper presents the diversity of natural and anthropogenic forest communities occurring in post-cultivated fields in Glinno Ługi. An impoverished fresh pine forest association (Leucobryo-Pinetum) and nine secondary forest communities have been distinguished in the transect line (1.16 km in length). Factors influencing the structure and species composition of recent forest communities, such as habitat properties, previous land use forms and the intensity of forest management, are described.
    Źródło:
    Acta Universitatis Lodziensis. Folia Biologica et Oecologica; 2011, 7; 149-162
    1730-2366
    2083-8484
    Pojawia się w:
    Acta Universitatis Lodziensis. Folia Biologica et Oecologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of the Kładkowe Bagno peat-bog in the Late Glacial and Holocene: diversified history of two deposit basins studied with use of macrofossil remains analysis
    Autorzy:
    Drzymulska, Danuta
    Powiązania:
    https://bibliotekanauki.pl/articles/2026058.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Late Glacial
    Holocene
    Puszcza Knyszyńska Forest
    peat
    analysis of plant remains
    subfossil vegetation
    Opis:
    This pa per pres ents re sults of in ves ti ga tion on peat and la cus trine sedi ments from the K³ad kowe Bagno peat- bog located in the Puszcza Knyszyñska For est. Us ing analy sis of plant re mains from sedi ment sam ples, vege ta tive and gen era tive finds were iden ti fied which al lowed de scrib ing peat units. Bas ing on these re sults, re con struc tion of sub fos silvege ta tion and pa laeoen vi ron men tal changes in the mire was made. Al to gether 4 sub as so cia tions of Sphag ne tum mag -el lan ici were de scribed, which de liv ered in for ma tion about hu mid ity of the mire sur face dur ing peat form ing pro -cesses. Stages of de posit de vel op ment were dated by ra dio car bon method. Ac cu mu la tion of the old est sedi ments in thesouth ern ba sin took place in the Late Gla cial. Peat of the north ern ba sin started to ac cu mu late in the At lan tic pe riod.The both parts of the mire ag gre gated proba bly 400 years ago.
    Źródło:
    Studia Quaternaria; 2008, 25; 23-32
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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