Temat: bory - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Wstępna analiza kręgów kamiennych w Borach Tucholskich
Preliminary analysis of the stone circles in Bory Tucholskie
Autorzy:: Ruszkowski, Michał
Powiązania:: https://bibliotekanauki.pl/articles/2076210.pdf
Data publikacji:: 2021
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: Odra
Leśno
kamienne kręgi
stela
Bory Tucholskie
Odry
stone circles
stele
Opis:: According to the definition, stone circles are structures made of vertically arranged blocks and stone boulders forming circles. Such structures are found mainly in Central and Northern Europe. They are also found in Africa and the Middle East, and single circles have been recorded in remote regions of Siberia. The largest clusters of this type of structures are located in northern Poland and southern Scandinavia. This article describes the preliminary results of field works at the Odry and Leśno sites. The result of the research work was the first discovery of the image of a human on the central stone in the circle number V in Odry. It is the first discovery of this type in northern Poland.
Źródło:: Przegląd Geologiczny; 2021, 69, 2; 100--102
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Zmiany żyzności trofii w ekosystemach miękkowodnych jezior Borów Tucholskich
Changes of trophy in soft water lakes of Tuchola Pinewoods (N Poland).
Autorzy:: Milecka, K.
Bogaczewicz-Adamczak, B.
Powiązania:: https://bibliotekanauki.pl/articles/2074418.pdf
Data publikacji:: 2006
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:: jezioro miękkowodne
badania paleoekologiczne
osad denny
badania pyłkowe
Bory Tucholskie
soft water lakes
pollen analysis
diatom analysis
trophy changes
Holocene
Tuchola Pinewoods
Opis:: Soft water lakes are mostly acid, poor in minerals and have a lot of free CO2 in their water and bottom sediments. So called Lobelia lakes, containing Lobelia dortmanna L., Isoëtes lacustris L., and Littorella uniflora (L.) Ascherson, are a type of soft water lakes. These species are rare in Poland and in Europe mainly because of eutrophication and anthropopression. Lobelia lakes and ecology of isoetids were described in many scientific articles, but their history is poorly recognised. Thus, for some years palaeoecological research has been done in the Tuchola Pinewoods to reveal the time of migration, spreading and development of Lobelia lakes. Pollen analysis and diatom analysis were done for the sediments of lakes: Nierybno, Okoń Duży, Linowskie, Moczadło and Nawionek (Fig. 1). Content of plant remains of Lobelia dortmanna nad Isoëtes lacustris, fossil diatoms and Pediastrum indicates phases of low and high trophy of Lake Nierybno (Fig. 5). The highest trophy was found in the Younger Dryas, in the middle Boreal Period and the oldest time of Subboreal Period. The lowest trophy was observed at the beginning of the Holocene, in the Atlantic Period and in modern times. Low trophy of the lake is related to acid or neutral pH of the water. Reconstruction of the lake history based on diatom analysis shows two main phases of the Nierybno ecosystem existence. In the early stages of the lake’s development it was an eutrophic basin with elevated pH. At the beginning of the Atlantic Period the pH decreased and content of nutrients in the water was reduced. Navicula radiosa, N. leptostriata and N. heimansioides, species typical for Lobelia lakes have been present since then. Generally Lobelia lakes are well preserved in the Tuchola Pinewoods due to low anthropopression and conservation activity of the Tuchola Pinewoods National Park and the Zaborski Landscape Park.
Źródło:: Przegląd Geologiczny; 2006, 54, 1; 81-86
0033-2151
Pojawia się w:: Przegląd Geologiczny
Dostawca treści:: Biblioteka Nauki

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