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Wyszukujesz frazę "Nitychoruk, Jerzy" wg kryterium: Wszystkie pola


Wyświetlanie 1-2 z 2
Tytuł:
Unique finds in palynological spectra: acetolyze resistant vegetative forms of freshwater dinoflagellate based on the Lake Młynek record from northeastern Poland
Autorzy:
Bińka, Krzysztof
Welc, Fabian
Nitychoruk, Jerzy
Sieradz, Dominika
Lewczuk, Antoni
Powiązania:
https://bibliotekanauki.pl/articles/2025037.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
freshwater dinoflagellate
microfossil
human impact
Holocene
Opis:
The freshwater dinoflagellate represent microfossils which are very rarely noted in lake deposits. In Late Holocene sediments of the Lake Młynek, the Iława Lakeland, northern Poland, we identified intense blooms of algae of the genus Palatinus. They occurred primarily in the period of strong human impact during expansion of the Monastic State of the Teutonic Order. The most amazing thing is that samples in which conventional palynological maceration has been used dinoflagellate are represented by armored vegetative forms instead of cysts. During this laboratory processes, especially acetolysis, cellulosic thecae of armored forms should be destructed. This is the second known example of acetolysis resistant thecae of modern dinoflagellate, built by substance other than cellulose. Palatinus blooms were associated probably with the hydrotechnical works made by Teutonic Knights in the catchment, which caused supply and discharge of micronutrients e.g. selenium in the basin.
Źródło:
Studia Quaternaria; 2020, 37; 59-67
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary report on unique laminated holocene sediments from the Garun Lake in Egypt
Autorzy:
Marks, Leszek
Salem, Alaa
Welc, Fabian
Nitychoruk, Jerzy
Chen, Zhongyuan
Zalat, Abdelfattah
Majecka, Aleksandra
Chodyka, Marta
Szymanek, Marcin
Tołoczko-Pasek, Anna
Powiązania:
https://bibliotekanauki.pl/articles/2027070.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Holocene
laminated sediments
Qarun Lake
Faiyum Oasis
Egypt
Opis:
The Lake Qarun (Faiyum Oasis, northern Egypt) is a relic of the much larger Holocene lake. Past lake levels and extensions were reconstructed, based on setting of archaeological sites scattered along northern paleoshores of the ancient lake. However, geoarcheological works did not yield enough data to establish continuous environmental history of the lake. A deep drilling FA-1 on the southeastern shore of the lake, performed in 2014, supplied with a core, 26 m long that is the one of the longest lake sediment cores in northeastern Africa. The basal section of the core consisted of thin-laminated diatom marly deposits, underlain at the Late Pleistocene/Holocene boundary by coarse-grained sands. The sediment lamine were quite well developed, especially in the lower part of the core. Preliminary results indicated annually deposited sediment sequence with seasonality signals provided by microlamine of diatoms, calcite, organic matter and clastic material. Early Holocene varved sediments from the Faiyum Oasis supplied with exceptional paleoenvironmental data for northeastern Africa, which enriched a record from previous logs drilled at the southwestern margin of the Qarun Lake.
Źródło:
Studia Quaternaria; 2016, 33; 35-46
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
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