Pub Date : 2023-01-01DOI: 10.33275/1727-7485.1.2023.708
І. Roman, O. Gromyko
Unique biotopes can be a source of new plant growth promotion (PGP) bacteria with rare properties. The Antarctic habitat is an attractive location for research, as it is characterized by many stress factors, and the local microbiota is under permanent selective pressure. We believe that the rhizosphere bacteria of this habitat may have important PGP properties that can be used in agriculture. A variety of research methods were used in this work: the molecular genetic technique to establish the gene sequence, chemical to test the ability to produce nitrite, ammonia, and indole acetic acid, microbiological to investigate the cultured properties of the strain, as well as antagonistic and PGP activities. We found that the strain belongs to the genus Amycolatopsis. It showed antagonistic activity against phytopathogenic bacteria (Xanthomonas campestris pv. campestris IMB8003 and Bacillus subtilis ATCC 31324) and fungi (Alternaria alternata DSM 1102, Fusarium oxysporum ІМВ 54201, Aspergillus niger ІМВ 16706), and also demonstrated some PGP properties (solubilization of phosphorus and zinc and production of nitrite and ammonia). Inoculation of wheat seeds with spores of this strain promoted germination and growth of seedlings. The strain has demonstrated properties that make it a promising basis for developing biofertilizers that can be used in agriculture.
{"title":"Plant growth promoting properties of an antarctic strain Amycolatopsis sp. Cq 72-27","authors":"І. Roman, O. Gromyko","doi":"10.33275/1727-7485.1.2023.708","DOIUrl":"https://doi.org/10.33275/1727-7485.1.2023.708","url":null,"abstract":"Unique biotopes can be a source of new plant growth promotion (PGP) bacteria with rare properties. The Antarctic habitat is an attractive location for research, as it is characterized by many stress factors, and the local microbiota is under permanent selective pressure. We believe that the rhizosphere bacteria of this habitat may have important PGP properties that can be used in agriculture. A variety of research methods were used in this work: the molecular genetic technique to establish the gene sequence, chemical to test the ability to produce nitrite, ammonia, and indole acetic acid, microbiological to investigate the cultured properties of the strain, as well as antagonistic and PGP activities. We found that the strain belongs to the genus Amycolatopsis. It showed antagonistic activity against phytopathogenic bacteria (Xanthomonas campestris pv. campestris IMB8003 and Bacillus subtilis ATCC 31324) and fungi (Alternaria alternata DSM 1102, Fusarium oxysporum ІМВ 54201, Aspergillus niger ІМВ 16706), and also demonstrated some PGP properties (solubilization of phosphorus and zinc and production of nitrite and ammonia). Inoculation of wheat seeds with spores of this strain promoted germination and growth of seedlings. The strain has demonstrated properties that make it a promising basis for developing biofertilizers that can be used in agriculture.","PeriodicalId":33831,"journal":{"name":"Ukrayins''kii antarktichnii zhurnal","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134989111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.33275/1727-7485.1.2023.709
K. Tretyak, D. Kukhtar
The aim of this study is modeling the dependence of maximum velocity of the Trooz Glacier (Kyiv Peninsula, West Antarctica) on air temperature. For this purpose, we processed a time series of meteorological observations at the Akademik Vernadsky station and the ice flow velocity of the Trooz Glacier. The ice velocities were determined from the synthetic aperture radar images, acquired by the Sentinel-1 satellite, for the period from May 2015 to November 2022. The SAR images were processed in the SNAP (Sentinel Application Platform) program using the Offset Tracking method. As a result, 219 ice flow velocitymaps were obtained. During the studied period, the maximum velocities varied from 2.64 m/day (August 19, 2015) to 4.05 m/day (April 18, 2020). A functional dependence between the temperature data from the Akademik Vernadsky station and the remotesensing data on the air temperature above the glacier’s surface was established. We combined the three parameters (time series of the maximum velocities of the glacial flow, remote temperature measurements above the glacier, and direct temperature measurements at the Akademik Vernadsky station) in a linear model. In order to increase the accuracy of the modeling, an a posteriori optimization was carried out. As a result, the average error in determining the maximum velocity of the glacier reduced from 23 cm/day to 17 cm/day.
{"title":"Modeling the Trooz Glacier’s movement using air temperature data and satellite SAR observations in 2015–2022","authors":"K. Tretyak, D. Kukhtar","doi":"10.33275/1727-7485.1.2023.709","DOIUrl":"https://doi.org/10.33275/1727-7485.1.2023.709","url":null,"abstract":"The aim of this study is modeling the dependence of maximum velocity of the Trooz Glacier (Kyiv Peninsula, West Antarctica) on air temperature. For this purpose, we processed a time series of meteorological observations at the Akademik Vernadsky station and the ice flow velocity of the Trooz Glacier. The ice velocities were determined from the synthetic aperture radar images, acquired by the Sentinel-1 satellite, for the period from May 2015 to November 2022. The SAR images were processed in the SNAP (Sentinel Application Platform) program using the Offset Tracking method. As a result, 219 ice flow velocitymaps were obtained. During the studied period, the maximum velocities varied from 2.64 m/day (August 19, 2015) to 4.05 m/day (April 18, 2020). A functional dependence between the temperature data from the Akademik Vernadsky station and the remotesensing data on the air temperature above the glacier’s surface was established. We combined the three parameters (time series of the maximum velocities of the glacial flow, remote temperature measurements above the glacier, and direct temperature measurements at the Akademik Vernadsky station) in a linear model. In order to increase the accuracy of the modeling, an a posteriori optimization was carried out. As a result, the average error in determining the maximum velocity of the glacier reduced from 23 cm/day to 17 cm/day.","PeriodicalId":33831,"journal":{"name":"Ukrayins''kii antarktichnii zhurnal","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134989118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.33275/1727-7485.1.2023.704
І. Savchyn, K. Tretyak
{"title":"Tectonic plates moment of inertia and angular momentum determination: the case of the Antarctic plate","authors":"І. Savchyn, K. Tretyak","doi":"10.33275/1727-7485.1.2023.704","DOIUrl":"https://doi.org/10.33275/1727-7485.1.2023.704","url":null,"abstract":"","PeriodicalId":33831,"journal":{"name":"Ukrayins''kii antarktichnii zhurnal","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135312711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.33275/1727-7485.1.2023.707
S. Komplikevych, O. Maslovska, T. Moravska, I. Yarmoliuk, N. Biront, Y. Zaritska, S. Hnatush
{"title":"Adaptations of the antarctic bacterium Paenibacillus tundrae IMV B-7915 to copper (II) chloride exposure","authors":"S. Komplikevych, O. Maslovska, T. Moravska, I. Yarmoliuk, N. Biront, Y. Zaritska, S. Hnatush","doi":"10.33275/1727-7485.1.2023.707","DOIUrl":"https://doi.org/10.33275/1727-7485.1.2023.707","url":null,"abstract":"","PeriodicalId":33831,"journal":{"name":"Ukrayins''kii antarktichnii zhurnal","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135312712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.33275/1727-7485.1.2023.706
M. Nabokin, O. Salganskiy, V. Tkachenko, P. Kovalenko, A. Dzhulai, A. Puhovkin, S. Gogol, Yu. Protsenko, L. Svetlichniy, I. Kozeretska
The copepod Boeckella poppei (Mrazek, 1901) (Calanoida: Centropagidae) is one of the Maritime Antarctic’s most common freshwater zooplankton species. It was first discovered in 1961–1962 on Signy Island (South Orkney Islands). Nowadays, it is found on many other islands in the region. The copepod is also found on Western Subantarctic islands, in the eastern part of the continent, and South America. However, in the Wilhelm Archipelago, there have been only a few disjointed findings of the species so far: it has been noted as numerous both north and south of the Ukrainian Antarctic Akademik Vernadsky station, yet for thearchipelago, there are only two brief records which do not describe its distribution in this region. Our data are based on 114 specimens collected in 2005–2023 during Ukrainian Antarctic Expeditions. Boeckella poppei was found in 51 samples from 23 lakes on eight islands: Uruguay, Irizar, Berthelot, Galindez, Roca, and Eight (Wilhelm Archipelago), Nelson, King George (South Shetland Islands). Live specimens were recorded during the ice-free period and significantly after the surface was frozen. In many samples, adults and copepodid stages were found, while nauplii were not found.
{"title":"Records of Boeckella poppei (Mrazek, 1901) (Calanoida: Centropagidae) obtained during Ukrainian Antarctic Expeditions","authors":"M. Nabokin, O. Salganskiy, V. Tkachenko, P. Kovalenko, A. Dzhulai, A. Puhovkin, S. Gogol, Yu. Protsenko, L. Svetlichniy, I. Kozeretska","doi":"10.33275/1727-7485.1.2023.706","DOIUrl":"https://doi.org/10.33275/1727-7485.1.2023.706","url":null,"abstract":"The copepod Boeckella poppei (Mrazek, 1901) (Calanoida: Centropagidae) is one of the Maritime Antarctic’s most common freshwater zooplankton species. It was first discovered in 1961–1962 on Signy Island (South Orkney Islands). Nowadays, it is found on many other islands in the region. The copepod is also found on Western Subantarctic islands, in the eastern part of the continent, and South America. However, in the Wilhelm Archipelago, there have been only a few disjointed findings of the species so far: it has been noted as numerous both north and south of the Ukrainian Antarctic Akademik Vernadsky station, yet for thearchipelago, there are only two brief records which do not describe its distribution in this region. Our data are based on 114 specimens collected in 2005–2023 during Ukrainian Antarctic Expeditions. Boeckella poppei was found in 51 samples from 23 lakes on eight islands: Uruguay, Irizar, Berthelot, Galindez, Roca, and Eight (Wilhelm Archipelago), Nelson, King George (South Shetland Islands). Live specimens were recorded during the ice-free period and significantly after the surface was frozen. In many samples, adults and copepodid stages were found, while nauplii were not found.","PeriodicalId":33831,"journal":{"name":"Ukrayins''kii antarktichnii zhurnal","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134989113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.33275/1727-7485.1.2023.705
O. Koloskov, P. T. Jayachandran, Yu. Yampolski
The main objective of this study is to evaluate the effectiveness of the CARISMA (Canadian Array for Realtime Investigations of Magnetic Activity) – Akademik Vernadsky station (65.25°S 64.25°W, Vernadsky) Extremely Low Frequency (ELF) induction magnetometer network as a planetary monitoring system for thunderstorm activity, with observation sites located in the Arctic and Antarctic regions, respectively. To achieve this, daily ELF records from Vernadsky and Fort Churchill (FCHU, 58.76°N 94.08°W) collected in January 2022 were processed and analyzed. For CARISMA, data from the FCHU site were used due to the better signal-to-noise ratio. The horizontal magnetic components of Schumann signals obtained at Vernadsky and FCHU underwent spectral and polarization processing. ELF transients were identified, and subsequent geolocation was performed as well. Both regular (quiet) thunderstorm activity periods and an unprecedented local amplification of lightning activity near the Hunga Tonga-Hunga Ha'apai volcano during its eruption on January 15, 2022, were studied. Throughout the quiet periods, ELF signal processing yielded similar characteristics of integral lightning activity derived from CARISMA and Vernadsky records, consistent with findings in the literature and previous investigations at the Vernadsky site. On the other hand, the analysis of Schumann spectra and ELF transients during the Tonga volcano eruption confirmed that most thunderstorms were concentrated within a relatively small area around the epicenter, validating the point source model for the global lightning center. This paper demonstrates that the CARISMA and Vernadsky magnetometer network is well-suited for establishing a global lightning activity monitoring andintense lightning geolocation system. Such a system can be employed to assess and study global temperature trends, monitor the growth of lightning activity in high latitudes, and detect terrestrial, atmospheric, and geospace disaster phenomena.
{"title":"On the performance of CARISMA – Akademik Vernadsky station Schumann resonance monitoring","authors":"O. Koloskov, P. T. Jayachandran, Yu. Yampolski","doi":"10.33275/1727-7485.1.2023.705","DOIUrl":"https://doi.org/10.33275/1727-7485.1.2023.705","url":null,"abstract":"The main objective of this study is to evaluate the effectiveness of the CARISMA (Canadian Array for Realtime Investigations of Magnetic Activity) – Akademik Vernadsky station (65.25°S 64.25°W, Vernadsky) Extremely Low Frequency (ELF) induction magnetometer network as a planetary monitoring system for thunderstorm activity, with observation sites located in the Arctic and Antarctic regions, respectively. To achieve this, daily ELF records from Vernadsky and Fort Churchill (FCHU, 58.76°N 94.08°W) collected in January 2022 were processed and analyzed. For CARISMA, data from the FCHU site were used due to the better signal-to-noise ratio. The horizontal magnetic components of Schumann signals obtained at Vernadsky and FCHU underwent spectral and polarization processing. ELF transients were identified, and subsequent geolocation was performed as well. Both regular (quiet) thunderstorm activity periods and an unprecedented local amplification of lightning activity near the Hunga Tonga-Hunga Ha'apai volcano during its eruption on January 15, 2022, were studied. Throughout the quiet periods, ELF signal processing yielded similar characteristics of integral lightning activity derived from CARISMA and Vernadsky records, consistent with findings in the literature and previous investigations at the Vernadsky site. On the other hand, the analysis of Schumann spectra and ELF transients during the Tonga volcano eruption confirmed that most thunderstorms were concentrated within a relatively small area around the epicenter, validating the point source model for the global lightning center. This paper demonstrates that the CARISMA and Vernadsky magnetometer network is well-suited for establishing a global lightning activity monitoring andintense lightning geolocation system. Such a system can be employed to assess and study global temperature trends, monitor the growth of lightning activity in high latitudes, and detect terrestrial, atmospheric, and geospace disaster phenomena.","PeriodicalId":33831,"journal":{"name":"Ukrayins''kii antarktichnii zhurnal","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134989119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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