RELATION BETWEEN INUNDATION FREQUENCY AND HABITAT CONDITIONS OF FLOODPLAIN LAKES - A CASE STUDY OF THE LOWLAND BIEBRZA RIVER (NE POLAND)

2016 ◽  
Vol 15 (6) ◽  
pp. 1311-1321 ◽  
Author(s):  
Jaroslaw Chormanski ◽  
Malgorzata Slapinska ◽  
Katarzyna Glinska-Lewczuk
Keyword(s):  
Floodplain Lakes ◽  
Habitat Conditions ◽  
Inundation Frequency ◽  
Ne Poland

Effects of extreme habitat conditions on otolith morphology – a case study on extremophile livebearing fishes (Poecilia mexicana, P. sulphuraria)

Zoology ◽  
2011 ◽  
Vol 114 (6) ◽  
pp. 321-334 ◽  
Author(s):  
Tanja Schulz-Mirbach ◽  
Rüdiger Riesch ◽  
Francisco J. García de León ◽  
Martin Plath
Keyword(s):  
Habitat Conditions ◽  
Poecilia Mexicana ◽  
Otolith Morphology ◽  
Extreme Habitat

Detecting changes in riparian habitat conditions based on patterns of greenness change: A case study from the Upper San Pedro River Basin, USA

2008 ◽  
Vol 8 (1) ◽  
pp. 89-99 ◽  
Author(s):  
K. Bruce Jones ◽  
Curtis E. Edmonds ◽  
E. Terrance Slonecker ◽  
James D. Wickham ◽  
Anne C. Neale ◽  
...  
Keyword(s):  
River Basin ◽  
Riparian Habitat ◽  
Habitat Conditions ◽  
San Pedro River ◽  
San Pedro

scholarly journals Miniature radiocarbon measurements ( <  150 µg C) from sediments of Lake Żabińskie, Poland: effect of precision and dating density on age–depth models

Geochronology ◽  
2020 ◽  
Vol 2 (1) ◽  
pp. 63-79 ◽  
Author(s):  
Paul D. Zander ◽  
Sönke Szidat ◽  
Darrell S. Kaufman ◽  
Maurycy Żarczyński ◽  
Anna I. Poraj-Górska ◽  
...  
Keyword(s):  
Lacustrine Sediments ◽  
Plant Macrofossils ◽  
Ion Source ◽  
14C Dating ◽  
Sample Mass ◽  
Carbon Dating ◽  
Analytical Precision ◽  
Ne Poland ◽  
Gas Source

Abstract. The recent development of the MIni CArbon DAting System (MICADAS) allows researchers to obtain radiocarbon (14C) ages from a variety of samples with miniature amounts of carbon (<150 µg C) by using a gas ion source input that bypasses the graphitization step used for conventional 14C dating with accelerator mass spectrometry (AMS). The ability to measure smaller samples, at reduced cost compared with graphitized samples, allows for greater dating density of sediments with low macrofossil concentrations. In this study, we use a section of varved sediments from Lake Żabińskie, NE Poland, as a case study to assess the usefulness of miniature samples from terrestrial plant macrofossils for dating lake sediments. Radiocarbon samples analyzed using gas-source techniques were measured from the same depths as larger graphitized samples to compare the reliability and precision of the two techniques directly. We find that the analytical precision of gas-source measurements decreases as sample mass decreases but is comparable with graphitized samples of a similar size (approximately 150 µg C). For samples larger than 40 µg C and younger than 6000 BP, the uncalibrated 1σ age uncertainty is consistently less than 150 years (±0.010 F14C). The reliability of 14C ages from both techniques is assessed via comparison with a best-age estimate for the sediment sequence, which is the result of an OxCal V sequence that integrates varve counts with 14C ages. No bias is evident in the ages produced by either gas-source input or graphitization. None of the 14C ages in our dataset are clear outliers; the 95 % confidence intervals of all 48 calibrated 14C ages overlap with the median best-age estimate. The effects of sample mass (which defines the expected analytical age uncertainty) and dating density on age–depth models are evaluated via simulated sets of 14C ages that are used as inputs for OxCal P-sequence age–depth models. Nine different sampling scenarios were simulated in which the mass of 14C samples and the number of samples were manipulated. The simulated age–depth models suggest that the lower analytical precision associated with miniature samples can be compensated for by increased dating density. The data presented in this paper can improve sampling strategies and can inform expectations of age uncertainty from miniature radiocarbon samples as well as age–depth model outcomes for lacustrine sediments.

scholarly journals Assessment of Ground Regeneration around Borehole Heat Exchangers between Heating Seasons in Cold Climates: A Case Study in Bialystok (NE, Poland)

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4793
Author(s):  
Joanna Piotrowska-Woroniak
Keyword(s):  
Heat Exchangers ◽  
Experimental Studies ◽  
Heat Pumps ◽  
Cold Climate ◽  
Ne Poland ◽  
North Eastern ◽  
Recorded Data ◽  
Source Of Information

Based on the experimental studies, the process of ground regeneration around the borehole loaded with brine-water heat pumps working exclusively for heating purposes in the period of four consecutive heating seasons in a cold climate was presented. The research was conducted in north-eastern Poland. The aim of the work is to verify the phenomenon of thermal ground regeneration in the period between heating seasons on the basis of the recorded data and to check whether the ground is able to regenerate itself and at what rate. It was noticed that the ground does not fully regenerate, especially during heating seasons with lower temperatures. In the analyzed period, from 22 September 2016 to 12 October 2020, the ground probably cooled irreversibly by 1.5 °C. In order to illustrate and evaluate the speed of changes in the ground, the one’s profile with an undisturbed temperature field was presented for each month of the year. The presented results can be a very important source of information for the analysis of geothermal conditions occurring in the ground. They can be used to verify mathematical models and conduct long-term simulations that allow us to see the complexity of the processes taking place in the ground.

The tawny owl Strix aluco as a material collector in faunistic investigations: the case study of small mammals in NE Poland

2011 ◽  
Vol 21 (3) ◽  
pp. 185-191 ◽  
Author(s):  
Michał Żmihorski ◽  
Jakub Gryz ◽  
Dagny Krauze-Gryz ◽  
Anna Olczyk ◽  
Grzegorz Osojca
Keyword(s):  
Small Mammals ◽  
Tawny Owl ◽  
Strix Aluco ◽  
Ne Poland
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