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    Wyświetlanie 1-8 z 8
    Tytuł:
    Late Holocene water-level changes in Lake Iso Lehmälampi, Southern Finland, reflected in subfossil Cladocerans and Chironomids
    Autorzy:
    Nevalainen, Liisa
    Luoto, Tomi P.
    Sarmaja- Korjonen, Kaarina
    Powiązania:
    https://bibliotekanauki.pl/articles/2026067.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Chironomidae
    Cladocera
    climate
    Finland
    late Holocene
    lake-level changes
    Opis:
    Anal y ses of subfossil cladocerans (Crustacea: Cladocera) and chi rono mids (Diptera: Chironomidae) were ap plied to ex am ine wa ter-level changes in a small and oligotrophic lake in south ern Fin land over the past 2000 years. Ma jor changes in the in ver te brate com mu ni ties oc curred ca. 400 AD on wards when the lit to ral cladoceran Alonella nana started to re place the plank tonic Eubosmina as the dom i nant spe cies and chi rono mids Psectrocladius sordidellus group and Zalutschia zalutschicola in creased. These changes were most likely due to a de creas ing wa ter level and an en larg ing pro por tion of the lit to ral area, pro vid ing suit able veg e ta tive hab i tats, e.g. aquatic bryophytes (mosses), for these taxa. The low er ing wa ter level reached its min i mum just be fore the Me di eval Warm Pe riod, ca. 800–1000 AD, af ter which the lake level rose again and re mained high un til mod ern times. A prom i nent change in the chi rono mid as - sem blages oc curred dur ing the 20th cen tury when Ablabesmyia monilis and Chironomus anthracinus type in creased, pre sum ably due to changes in wa ter chem is try, caused by anthropogenic load of pol lut ants.
    Źródło:
    Studia Quaternaria; 2008, 25; 33-42
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hydrological changes in the Lublin Polesie during the Late Glacial and Holocene as reflected in the sequences oflacustrine and mire sediments
    Autorzy:
    Bałaga, Krystyna
    Powiązania:
    https://bibliotekanauki.pl/articles/2027411.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Lublin Polesie
    Late Glacial
    Holocene
    hydrological changes
    pollen analysis
    Opis:
    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.
    Źródło:
    Studia Quaternaria; 2002; 37-53
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    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:
    Early and Middle Holocene paleoclimates in the South Western Desert of Egypt – the worldbefore unification
    Autorzy:
    Schild, R.
    Wendorf, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/2027010.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    South Western Desert
    Egypt
    Late Glacial
    Holocene
    prehistoric cultural entities
    climatic changes
    Opis:
    In the field sea sons of 1990 to 2008 the Com bined Pre his toric Ex pe di tion con ducted an ex ten sive ar chae o log i cal, archaeozoological, archaeobotanical and geomorphological field work at more than a hun dred sites in the Nabta, Kiseiba, El Kortain, Gebal El Beid, Gebel Ramlah and Berget El Sheb Ar eas, South West ern Desert of Egypt. The re - search has helped to de velop a long chro no log i cal se quence of Late Gla cial and Ho lo cene cli ma tic changes in the re - gion. The cli ma tic se quence has been sup ported by more than 300 14C and OSL as says that per mit ted to place most of the cli ma tic events in a firm chro no log i cal frame.
    Źródło:
    Studia Quaternaria; 2013, 30; 125-133
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    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
    Tytuł:
    History of the Białowieża Primeval Forest, NE Poland
    Autorzy:
    Milecka, Krystyna
    Noryśkiewicz, Agnieszka M.
    Kowalewski, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/2026074.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Pollen and macrofossil analysis
    Białowieża Primeval Forest
    NE Poland
    peatland
    Late Glacial
    Holocene
    Opis:
    Bia³owie¿a in Po land is a very fa mous re gion in Eu rope (be cause of its pri me val for est and bi son pop u la tion), but its en vi ron men tal his tory is poorly known. This ar ti cle shows the re sults of palynological anal y sis, macrofossil anal y sis and geo log i cal set tings of two mires in the Bia³owie¿a For est. The pol len di a grams show changes of the veg e ta tion cover from the youn ger part of the Late Gla cial un til the pres ent time. The rel a tive time scale is based on palynostratigraphy and com par i son to pub lished re sults of other sites from the ad ja cent re gions. Dur ing the Late Gla cial two stages of the veg e ta tion suc ces sion were re vealed: steppe and for est dur ing the Alleröd pe riod and tun dra-like veg e ta tion during the Youn ger Dryas. The Ho lo cene his tory con sists of five stages of plant cover de vel op ment. The spe cial fea tures of the Bia³owie¿a For est are con di tioned by two main fac tors: low de gree of anthropogenic im pact and in flu ences of con ti nen tal cli mate and bo real zone, stron ger than in the other re gions of Po land.
    Źródło:
    Studia Quaternaria; 2009, 26; 25-39
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Late Glacial and Holocene molluscan assemblages in deposits filling palaeolakes in northern Poland
    Autorzy:
    Alexandrowicz, W.P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2027032.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lacustrine chalk
    calcareous gyttja
    palaeolakes
    molluscan assemblages
    Late Glacial
    Holocene
    northern
    Po land
    Opis:
    Late Gla cial and Ho lo cene car bon ate lac us trine de pos its de vel oped as lac us trine chalk and cal car e ous gyttja are fairly wide spread across north ern Po land. They form fill ings of palaeolakes which de vel oped dur ing the deglaciation. These for ma tions are usu ally cov ered by peat. Rich and di ver si fied malacofauna has been found in the afore men tioned sed i -ments. The pro files from 154 sites de scribed and pub lished by var i ous au thors were sub jected to malacological anal y -sis. In the whole ma te rial, 18 mol lus can as sem blages were dis tin guished, rep re sent ing three types of hab i tats: terrestrial,of tem po rary wa ter bod ies, and of per ma nent wa ter bod ies. The com po si tion and struc ture of these as sem blages al lows char ac ter iz ing cli mate and dif fer en ti at ing hab i tats. The time-se quences of malacological as sem blages pro videdpos si bil ity to de fine three types of malacological se quences. On the ba sis of these suc ces sions, a scheme of the lakewa ter bod ies evo lu tion dur ing Late Gla cial and in north ern Po land was elab o rated.
    Źródło:
    Studia Quaternaria; 2013, 30; 5-17
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The application of malacological analysis in the study of slope deposits: late Pleistocene and Holocene of the Podhale Basin (Carpathians, Poland)
    Autorzy:
    Alexandrowicz, W. P.
    Powiązania:
    https://bibliotekanauki.pl/articles/139145.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    molluscs
    molluscan assemblage
    Slope deposits
    Late Pleistocene
    Holocene
    southern Poland
    mięczaki
    zespół mięczaków
    osady stokowe
    późny plejstocen
    holocen
    Polska Południowa
    Opis:
    Slope deposits developed on calcareous sandstone and limestone formations in the eastern part of the Podhale Basin (Carpathians) were studied. In total, the analysis included fifteen profiles of such sediments, which revealed the presence of abundant malacofaunas comprising 39 mollusc species. Five faunistic assemblages differing in species composition and structure were defined in the material studied. Individual assemblages correspond to different climatic and environmental conditions, thereby making it possible to interpret the features of the sedimentary environments and specify the age of the deposits. Faunas with Pupilla loessica and Pupilla sterri containing species typical of loess formations are characteristic of deposits from the coldest phase of the last Glacial period (MIS 2). A fauna with Vertigo genesii, with a large proportion of cold-loving and moisture-loving taxa, is typical of the Younger Dryas. Associations that are dominated by shade-loving species, with Discus ruderatus and Discus perspectivus, correspond to the early and middle Holocene respectively. The investigations show that malacological analysis can be successfully applied to the research into slope deposits, enabling both the depositional conditions and the age of the sediments to be determined.
    Źródło:
    Acta Geologica Polonica; 2015, 65, 2; 245-261
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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