Science and earth science

Polish Polar Research

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Polish Polar Research | Accepted articles

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Abstract

Seabirds constitute an important link between marine and terrestrial ecosystems, one of its manifestations being the transport of organic matter from the sea to breeding grounds. The main aim of our study was to determine the impact of gregarious and planktivorous little auks on the quantity and chemistry of soil organic matter along the western coast of Spitsbergen, Svalbard archipelago. Samples from the vicinity of four breeding colonies and respective controls were investigated using the elemental analyzers as well as the Fourier transform infrared spectrometer with attenuated total reflection module. The results clearly indicate that soils affected by little auks are characterized by significantly higher content of soil organic carbon, total nitrogen, water-extractable organic carbon, and water-extractable total nitrogen in comparison with those unaffected by the birds. The size of the local population of little auks appears to be the crucial factor here. The chemistry of soil organic matter in soils affected by little auks is significantly different from that in soils unaffected by the birds. This is associated with fertilization of soils via guano deposition as well as differences in the quantity and quality of vegetation cover related to aforementioned process.
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Authors and Affiliations

Wojciech Szymański
1
ORCID: ORCID
Adrian Zwolicki
2
Katarzyna Zmudczyńska-Skarbek
2
ORCID: ORCID
Lech Stempniewicz
2
ORCID: ORCID

  1. Institute of Geography and Spatial Management, Jagiellonian University, ul. Gronostajowa 7, 30-387 Kraków, Poland
  2. Department of Vertebrate Ecology and Zoology, University of Gdańsk, ul. Wita Stwosza 59, 80–308, Gdańsk, Poland
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Abstract

Studies on the surface-active agents added during the cultivation process proved their effect on the synthesized bioproducts. The biosynthesis and accumulation of exopolysaccharide and biomass by Antarctic producer Cryptococcus laurentii AL65 were studied in submerged cultivation using different carbon sources in the culture medium added to a one-percent concentration (pentoses, hexoses and oligosaccharides). Sucrose was chosen as the most appropriate carbon source for the cell growth and extracellular polymer biosynthesis. Absorption of sucrose by a strain producer was monitored and the residual sugars were traced in the dynamics of the fermentation process. The effect of polyoxyethylene sorbitan monooleate (Tween 80) on the cell growth and the accumulation of the synthesized biopolymer were studied for the first time with the Antarctic producer. The optimal increase in the amount of accumulated exopolysaccharide was recorded at a concentration of 6% Tween 80 at 24 h from the start of fermentation. The surfactant treatment contributed to an increase in the total amount of lipids in the cell, to the increased biosynthesis of unsaturated fatty acids compared to saturated ones, and to the increased cellular synthesis of valuable metabolites such as phosphatidylinositol, phosphatidylserine and phosphatidylethanolamine. The impact of Tween 80 on intracellular and extracellular metabolites is a valuable asset in a possible scale-up of the process in industrial settings.
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Authors and Affiliations

Snezhana Rusinova-Videva
1
ORCID: ORCID
Zhana Petkova
2
ORCID: ORCID
Ginka Antova
2
ORCID: ORCID
Plamen Stoyanov
3 4
ORCID: ORCID
Tsvetelina Mladenova
3
ORCID: ORCID
Tzenka Radoukova
3
ORCID: ORCID

  1. The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 139 Ruski Blvd, 4000 Plovdiv, Bulgaria
  2. Department of Chemical Technology, University of Plovdiv Paisii Hilendarski, 24 Tz. Assen, 4000 Plovdiv, Bulgaria
  3. Department of Botany, University of Plovdiv Paisii Hilendarski, 24 Tz. Assen, 4000 Plovdiv, Bulgaria
  4. Department of Pharmacognosy and Pharmaceutical Chemistry, Medical University of Plovdiv, 15A V. Aprilov, 4000, Plovdiv, Bulgaria
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Abstract

Polar snow and its accumulation preserve valuable information derived from the atmosphere on past climate and environmental changes in high resolution, particularly in coastal sites. A 2.5-m snow-pit was excavated from the coastal ice rise (Moore Dome) near Amundsen Sea region in February 2012. This study evaluated the isotopic and chemical compositions in the snow-pit and compared them with meteorological variables. Based on the seasonal peaks of the MSA and nssSO42– together with 18O, D, and d-excess, the snow-pit record was corresponded to accumulation during austral winter 2011 to summer 2011/2012. The annual mean accumulation rate was assumed thus to be as large as or even higher than 1.03 m w.e. yr–1 at this site. A relatively warm winter temperature in 2011 was traceable in the variations of 18O, D, and d-excess. This study emphasizes the importance of the high snow accumulation observed at this site in providing valuable information on sub-annual variations in climate and environmental changes through the study of longer ice cores.
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Authors and Affiliations

Sang-Bum Hong
1
ORCID: ORCID
Yalalt Nyamgerel
2
ORCID: ORCID
Won Sang Lee
1
ORCID: ORCID
Jeonghoon Lee
2
ORCID: ORCID

  1. Division of Glacial Environment Research, Korea Polar Research Institute, 26, Songdomirae-ro, Yeonsu-gu, Incheon 21990, Korea
  2. Department of Science Education, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
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Abstract

The paper presents the potential of combining satellite radar data and neural networks for quasi-automatic detection of glacier grounding lines. The conducted research covered five years and was carried out in the area of the Amery Ice Shelf. It has a very complex shoreline, so its grounding-line location is uncertain. Thus, it has always been the subject of much research. The main objective of our work was to find out if Synthetic Aperture Radar data combined with a deep learning implementation would enable rapid detection of ice shelf grounding lines over large areas. For this purpose, 290 radar images from the Sentinel-1 satellite covering 46 000 km2 were used. Processed by the Differential Interferometry of Synthetic Aperture Radar four-pass method, the images formed a time-consistent series between 2017 and 2021. As a result of performed calculations, a total length of 1280 km of grounding line was determined. They were validated by comparing with other independent data sources based on manual measurements. It has been demonstrated that the combination of satellite radar data and automated data processing allows for obtaining high-precision results continuously in a very short time. Such an approach allows monitoring of grounding line position in the long term with intervals of less than one week. It enables analysis of the dynamics changes with unprecedented frequency and the identification of patterns.
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Authors and Affiliations

Michał Tympalski
1
ORCID: ORCID
Marek Sompolski
1
ORCID: ORCID
Anna Kopeć
1
ORCID: ORCID
Wojciech Milczarek
1
ORCID: ORCID

  1. Faculty of Geoengineering, Mining and Geology, Wrocław University of Science and Technology, Na Grobli 15, 50-421 Wrocław, Poland
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Abstract

Developments in Arctic international relations resulting from Russia's aggression against Ukraine in 2022 stand as the most serious crisis in regional cooperation since the end of the Cold War. This crisis has necessitated a re-evaluation of the regional governance system and an update of the political strategies of Arctic stakeholders. In this article, based on qualitative research methodology, we explore the challenges to regional cooperation in the near and mid-term perspectives, and we discuss how the current situation can contribute to a transformation of Poland's role in the Arctic, particularly in the field of science diplomacy. The study includes a critical analysis of the content of the Polish Polar Policy officially adopted in 2020, as well as its implementation. We conclude that the future of Arctic relations will be based not only on the hindered functioning of the Arctic Council but also on the emergence of new competitive forms of collaboration to be developed by Russia and its partners, distancing themselves from Western states. In such a situation and in the face of the emerging opposition between the two blocs, the role of science diplomacy will substantially increase and gain new dynamics. This, in turn, means that although Poland's Arctic policy in its present framework requires only minor conceptual correction, its implementation should be considerably built up and advanced.
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Authors and Affiliations

Michał Łuszczuk
1
ORCID: ORCID
Piotr Rakowski
2
ORCID: ORCID
Monika Szkarłat
3
ORCID: ORCID

  1. Institute of Socio-Economic Geography and Spatial Planning, Maria Curie Skłodowska University, Al. Kraśnicka 2D, Lublin 20-718, Poland
  2. Independent researcher, Wróblowa Street, Rozgarty, 87-134, Poland
  3. Institute of Political Science, Maria Curie Skłodowska University, ul. Głęboka 45, Lublin 20-612, Poland
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Abstract

Significant increasing trends in the air temperature were found both in the surface station of Svalbard Lufthavn and in the low-tropospheric temperature field over the Atlantic Arctic. The variability in temperature, as well as the multiannual trend, is at least three times bigger in the winter months than in summer. An attempt was made to explain the high day-to-day variability in the winter air temperature by the daily variability in the regional pressure field and circulation conditions. Six regional-scale circulation patterns were found by applying the principal component analysis to the mean daily sea level pressure (SLP) reanalysis data and their impact on the low-tropospheric air temperature variability was determined. A bipolar pattern, with a positive center over Greenland and a negative center over the White Sea, dominates in the region and strongly influences the air temperature field at 850 hPa geopotential height (correlation coefficients up to –0.65). The second pattern that impacts the temperature field in the Atlantic Arctic is the one with a center of action over Svalbard (mostly a low-pressure center in winter), strongly influencing the air temperature over the Barents Sea. The remaining circulation types, explaining only 5–8% of the total variance of the SLP field each, do not modify significantly the air temperature at 850 hPa geopotential level over the Atlantic Arctic, and none of the circulation types seems to influence the multiannual temperature trends.
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Authors and Affiliations

Ewa Bednorz
1
ORCID: ORCID
Arkadiusz M. Tomczyk
1
ORCID: ORCID
Bartosz Czernecki
1
ORCID: ORCID
Miłosz Piękny
1

  1. Department of Meteorology and Climatology, Institute of Physical Geography and Environmental Planning, Adam Mickiewicz University, B. Krygowskiego 10, 61–680 Poznań, Poland
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Abstract

Although Svalbard archipelago is considered as a natural laboratory for the environmental studies in the High Arctic, the knowledge on the transport and diversity of bioaerosols (aeroplankton) in the atmosphere is poorly recognized. To improve our knowledge about the aeroplankton over the Svalbard, we conducted a short-term study in the central part of the archipelago with a special focus on two important, but understudied in this region, airborne components: pollen grains and invertebrates. Aerobiological traps, three impact-type samplers and 12 pitfall-type water traps, were operated for a week of July 2022 at three sites located near Longyearbyen, the largest settlement of Svalbard. These sites, that is, Platåfjellet, Longyearbreen Glacier, and glacier valley, varied in the local sources of biological material and altitude. In total, 11 pollen taxa were isolated from pollen impactors. Most of them (68%) belonged to non-native plants, for example, Alnus sp., Betula sp., Picea abies, or Pinus sylvestris-type pollen. In pitfall-type water traps, we found invertebrates representing Acari (Prostigmata, Endeostigmata and Oribatida), Collembola ( Agrenia bidenticulata), Tardigrada (Eutardigrada) and Rotifera (Bdelloidea). The most taxa-rich site, both for pollen and invertebrates, was Platåfjellet, characterized by open landscape dominated by small cryptogams, mainly lichens and mosses, and sparse patches of vascular plants. Even though our sampling was short-term, we found diverse taxa belonged to native and alien species, indicating that both local and long-range transport shape aeroplankton composition and seeding of Arctic habitats. Long-term aerobiological monitoring in diverse ecosystems of Svalbard is needed to understand spatio-temporal influence of aeroplankton on ecosystems.
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Authors and Affiliations

Łukasz Grewling
1
ORCID: ORCID
Ronald Laniecki
1
Mikołaj Jastrzębski
1
Julia Borkowska
1
Zofia Marek
1
Katarzyna Kondrat
1
Zofia Nowak
1
Michał Zacharyasiewicz
1
Marcelina Małecka
1
Barbara Valle
2 3
ORCID: ORCID
Beata Messyasz
1
ORCID: ORCID
Krzysztof Zawierucha
1
ORCID: ORCID

  1. Faculty of Biology, Adam Mickiewicz University, ul. Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland
  2. Department of Life Sciences, Università degli Studi di Siena, Via A. Moro 2, 53100 Siena, Italy
  3. NBFC, National Biodiversity Future Center, Palermo, Italy

Instructions for authors


The quarterly Polish Polar Research invites original scientific papers dealing with all aspects of polar research. The journal aims to provide a forum for publication of high-quality research papers, which are of international interest.

We warmly welcome review papers and proposals for thematic Special Issues.

Articles must be written in English. Authors are requested to have their manuscript read by a person fluent in English before submission. They should not be longer than 30 typescript pages, including tables, figures and references. However, upon request, longer manuscripts may be considered for publication. All papers are peer-reviewed. With a submitted manuscript, authors should provide e-mail addresses of at least three suggested reviewers.


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