Bibliografia publikacji pracowników
Państwowej Szkoły Wyższej w Białej Podlaskiej
Baza tworzona przez Bibliotekę Akademii Bialskiej im. Jana Pawła II.
Zapytanie:
DIATOMS Liczba odnalezionych rekordów: 4
Przejście do opcji zmiany formatu | Wyświetl/ukryj etykiety | Wyświetlenie wyników w wersji do druku | Pobranie pliku do edytora | Nowe wyszukiwanie Streszczenie: During African Humid Period in the Holocene when the summer Intertropical Convergence Zone migrated to its northernmost position, the Qarun Lake in the Faiyum Oasis in Egypt was fed with regular inflows from the Nile River and rainfall brought by the Mediterranean winter circulation. Finely-laminated lake sediments, dated at 8.5-6.7 cal kyr B.P., were examined in terms of lithology, geochemistry, microfossils (diatom, pollen) and magnetic susceptibility. Based on the inferred geographical derivation of pollen, the environmental affiliation of diatom taxa and geochemistry of lake sediments, wind trajectories were distinguished, related to two main atmospheric circulation phases. During the earlier phase (8.50-7.83 cal kyr B.P.) there were northwestern wind trajectories followed by southern ones and during the later phase (7.83-6.70 cal kyr B.P.), the northern winds were followed by northwestern and southern ones. Northwestern and northern winds brought winter rainfall and caused water turbulence in the lake, and the southern winds were associated with regional aridification. This scenario of atmospheric circulation in northeastern Africa extends significantly our understanding of key modes of climatic variability and wind trajectories in the Early to Middle Holocene (Greenlandian to Northgrippian) transition. Projekt/grant: Rekonstrukcja zmian klimatu w dorzeczu Nilu w holocenie i ich wpływ na rozwój cywilizacji starożytnego Egiptu : Narodowe Centrum Nauki, DEC-2012/05/B/ST10/00558
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Nr opisu: 0000036478 Autorzy: Abdelfattah Zalat, Fabian Welc, Jerzy Antoni Nitychoruk, Leszek Marks, Marta Chodyka, Łukasz Jan Zbucki. Tytuł pracy: Last two millennia water level changes of the Młynek Lake (northern Poland) inferred from diatoms and chrysophyte cysts record Tytuł czasopisma: Szczegóły: 2018, Vol. 35, no. 2, p. 77--89 p-ISSN: 1641-5558 Charakterystyka formalna: artykuł w czasopiśmie polskim Charakterystyka merytoryczna: artykuł oryginalny naukowy Charakterystyka wg MNiSW: artykuł w czasopiśmie bez IF (wykaz MEiN) Język publikacji: ENG Punktacja ministerstwa: 14.000 Praca recenzowana Słowa kluczowe ang.: diatoms ; chrysophyte ; environment ; water level ; climate change ; Młynek lake ; Poland Uwaga: Kopia dostępna w Sekcji Bibliometrii. http://www.studia.quaternaria.pan.pl/pdfs/sq35-2/1_Zalat.pdf DOI: 10.2478/squa-2018-0006 Streszczenie: A sediment core, 350 cm long recovered from Młynek Lake, northern of Poland (Warmia and Masuria Region) was analyzed with respect to their content of diatoms and chrysophyte cysts. The aim was to reconstruct the lake water level and climatic changes during the past 2500 years. The recognized diatom assemblages displayed marked floristic changes along the sediment core samples. The main change in diatom composition consists of a shift from an assemblage dominated by benthic Fragilaria sensu lato species through marked intervals to a planktonic one in distinct zones. A high proportion of benthic to plankton taxa has been reported as indicative for a lowering of the lake level with long ice cover in a cold dry climate and a shift from benthic to planktonic diatom taxa reflects arising water level with longest growing season and reduced ice cover on the lake during a warm wet climate. Multivariate statistical analysis included hierarchical ascending clustering distinguished four diatom ecological groups. The analyzed core section was divided into 11 diatom zones according to a distribution of ecological groups and variation in abundance of dominant species supported by 14C data. The results displayed a developmental history of the Młynek Lake that can be divided into 6 main phases of alternating warm wet and cold dry shifts. A distinct dominance of planktonic eutrophic indicator diatoms accompanied by a low abundance of chrysophyte cysts indicates increased lake trophicity and a general trend for the increasing anthropogenic impact. Projekt/grant: Wpływ osadnictwa prehistorycznego na sedymentację w jeziorze Młynek : Fundusz Grantów na Badania Własne / PSW Biała Podlaska Projekt/grant: Korelacja faz osadnictwa pradziejowego i wczesnośredniowiecznego w Polsce północno-wschodniej z przemianami środowiska przyrodniczego w świetle badań osadów jeziornych (Correlation of prehistoric and early medieval settlement phases in northeast Poland with the changes of the natural environment in the light of lacus-trine sediments study) : Narodowe Centrum Nauki, UMO-2016/21/B/ST10/03059
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Nr opisu: 0000033785 Autorzy: Abdelfattah A. Zalat, Leszek Marks, Fabian Welc, Alaa Salem, Jerzy Antoni Nitychoruk, Zhongyuan Chen, Aleksandra Majecka, Marcin Szymanek, Marta Chodyka, Anna Tołoczko-Pasek, Qianli Sun, Xiaoshuang Zhao, Jun Jiang. Tytuł pracy: Diatom Stratigraphy of FA-1 Core, Qarun Lake, Records of Holocene Environmental and Climatic Change in Faiyum Oasis, Egypt Tytuł czasopisma: Szczegóły: 2017, Vol. 34, no. 1, p. 61--69 p-ISSN: 1641-5558 Charakterystyka formalna: artykuł w czasopiśmie polskim Charakterystyka merytoryczna: artykuł oryginalny naukowy Charakterystyka wg MNiSW: artykuł w czasopiśmie bez IF (wykaz MEiN) Język publikacji: ENG Punktacja ministerstwa: 14.000 Słowa kluczowe: holocen ; środowisko ; zmiany klimatu ; jezioro Karun ; okrzemki ; oaza Fajum ; Egipt Słowa kluczowe ang.: holocene ; environment ; climate change ; Qarun Lake ; diatoms ; Faiyum Oasis ; Egypt Uwaga: Kopia dostepna w Sekcji Bibliometrii Inne bazy podające opis:
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Scopus
Emerging Sources Citation Index (Web of Science Core Collection)
DOAJ
Zoological Rekord
IC Journals Master List
http://www.studia.quaternaria.pan.pl/pdfs/sq34-1/5_Zalat.pdf DOI: 10.1515/squa-017-0005 Streszczenie: This study evaluates changes in the environmental and climatic conditions in the Faiyum Oasis during the Holocene based on diatom analyses of the sediment FA-1 core from the southern seashore of the Qarun Lake. The studied FA-1 core was 26 m long and covered the time span ca. 9.000 cal. yrs BP. Diatom taxa were abundant and moderately to well-preserved throughout the core sediments. Planktonic taxa were most abundant than the benthic and epiphytic forms, which were very rare and sparsely distributed. The most dominant planktonic genera were Aulacoseira and Stephanodiscus followed by frequently distribution of Cyclostephanos and Cyclotella species. The stratigraphic distribution patterns of the recorded diatoms through the Holocene sediments explained five ecological diatom groups. These groups represent distinctive environmental conditions, which were mainly related to climatic changes through the early and middle Holocene, in addition to anthropogenic activity during the late Holocene. Comparison of diatom assemblages in the studied sediment core suggests that considerable changes occurred in water level as well as salinity. There were several high stands of the freshwater lake level during humid, warmer-wet climatic phases marked by dominance of planktonic, oligohalobous and alkaliphilous diatoms alternated with lowering of the lake level and slight increases in salinity and alkalinity during warm arid conditions evident by prevalence of brackish water diatoms. Projekt/grant: Opracowanie nowych algorytmów analizy obrazu z wykorzystaniem sztucznych sieci komputerowych : działalność statutowa WNET PSW, 2017-WNET/KNT/ZI/1
