Wszystkie pola: Nitychoruk, Jerzy - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Application of remote sensing to topographic maps of polar areas
Autorzy:: Dzierżek, Jan
Lindner, Leszek
Marks, Leszek
Nitychoruk, Jerzy
Szczęsny, Ryszard
Powiązania:: https://bibliotekanauki.pl/articles/2052826.pdf
Data publikacji:: 1991
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Źródło:: Polish Polar Research; 1991, 12, 2; 149-160
0138-0338
2081-8262
Pojawia się w:: Polish Polar Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Last two millennia water level changes of the Młynek Lake (northern Poland) inferred from diatoms and chrysophyte cysts record
Autorzy:: Zalat, Abdelfattah
Welc, Fabian
Nitychoruk, Jerzy
Marks, Leszek
Chodyka, Marta
Zbucki, Łukasz
Powiązania:: https://bibliotekanauki.pl/articles/2025243.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Diatoms
chrysophyte
environment
water level
climate change
Młynek Lake
Polska
Opis:: 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.
Źródło:: Studia Quaternaria; 2018, 35; 77-89
1641-5558
2300-0384
Pojawia się w:: Studia Quaternaria
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

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

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