Wyniki wyszukiwania - BazTech

1

The Occurrence of Diatoms from Genus Kobayasiella in Southern Poland

Noga Teresa, Poradowska Anita

Journal of Ecological Engineering

|

2022

|

Vol. 23, nr 4

197--200

EN

The Kobayasiella genus develops mostly in oligoor dystrophic freshwaters with low to medium electrolyte content. The studies carried out from 2008 to 2016 in southern Poland showed the presence of four Kobayasiella species. These species usually occurred individually in peatland areas or in the upper sections of small rivers and streams. The species presented in the study were most frequently found in oligotrophic peatbogs, characterized by acidic or very acidic waters with low or medium conductivity values.

2

Osuwiska na stokach Magury Witowskiej (Podhale)

Marciniec Paweł, Granoszewski Wojciech, Zimnal Ziemowit

Przegląd Geologiczny

|

2019

|

Vol. 67, nr 5

405--413

EN

The landslide on the northern slopes of Magura Witowska is an example ofa consequent-structural type oflandslide. It has been developed due to several favorable conditions like: monoclinal layer deposition where the dip angle and direction of collapsing layers are close to those of slope exposition. Moreover, shale packages are commonly present in the bedrock. In the lower part of the landslide an elongated basin filled with peat sediments is situated. The 8-m long profile was recovered with an Instorf sampler for 14C dating and pollen analysis purposes. The results of radiocarbon dating and pollen analysis point to Subboreal and Subatlantic age of these sediments. Undisturbed biogenic sedimentation, lack of minerogenic intercalations together with the unbroken course of pollen succession suggest that the studied landslide has not undergone any significant active events since its formation.

3

Dynamika wahań poziomu wody na zdegradowanych torfowiskach bałtyckich

Duda F., Woźniak E., Jereczek-Korzeniewska K., Cieśliński R.

Przegląd Geologiczny

|

2017

|

Vol. 65, nr 8

526--532

EN

Baltic-type raised bog (dome-shaped) is a type of peatbog with predominant atmospheric water supply and a convex shape, known as the dome. In Poland, 72 Baltic peatbogs have been distinguished, with various degrees of transformation, in the coastal zone and lake districts of the South Baltic Sea. None of them has natural water conditions. Their common name indicates significant similarities due to water supply conditions. However, due to the differences in morphology, both primary and secondary (resulting from the different course and scale of anthropogenic transformations), they may be expected to show some variability within the subtype. The aim of the paper is to present the diversity of water-level fluctuations in degraded Baltic raised bogs. An attempt was made to answer the question how strong the diversity of fluctuations is, both within each object and between two objects situated close to each other. Moreover, speed and value of the response of water level to atmospheric precipitation were analysed. The spatial scope of the paper covers two Baltic raised bogs in the lower part of the Łeba River valley: Czarne Bagno and £ebskie Bagno. To answer the questions asked, the results of measurements of water level and precipitation on the peat bogs were used. The study found that both the bogs show high dynamics in the variation of groundwater level. Lowering of the water level on both peatlands has always been recorded in the summer months, whilst its increase, which lasted until spring, has been observed in autumn. The water retention amount and water level on the peatlands were influenced primarily by precipitation. Extreme meteorological conditions that make it less conspicuous is the variation resulting from factors such as location in different parts of the bog, or type of degradation.