2018
Okuniewska-Nowaczyk, I.; Rahmonov, O.; Snytko, V. A.; Szczypek, T.
Palynological Record of the History of Vegetation in the Sandy Areas of Southern Poland Journal Article
In: Geography and Natural Resources, vol. 39, no. 4, pp. 396-402, 2018, ISSN: 18753728, (2).
@article{2-s2.0-85059761075,
title = {Palynological Record of the History of Vegetation in the Sandy Areas of Southern Poland},
author = { I. Okuniewska-Nowaczyk and O. Rahmonov and V.A. Snytko and T. Szczypek},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85059761075&doi=10.1134%2fS1875372818040145&partnerID=40&md5=fb844a493d96a504b681d1edc6c0a722},
doi = {10.1134/S1875372818040145},
issn = {18753728},
year = {2018},
date = {2018-01-01},
journal = {Geography and Natural Resources},
volume = {39},
number = {4},
pages = {396-402},
publisher = {Pleiades Publishing},
abstract = {A palynological analysis was made of the paleosoil (less than 20 cm in thickness) of the age of 4110 ± 110 BP which had formed on the top of river sediments and was subsequently covered with aeolian sands (3.6 m thick) of the so–called Bledow Desert. The results of the palynological analysis indicate: (1) the dominant role of pollen from lime (Tilia) among the tree species; (2) substantial amounts of pollen from maple (Acer); (3) a significant presence of pollen from heather (Ericaceae), and 4) an increase in the contribution of pollen from plants (including grains) associated with human activity. A comparison of data obtained with results from analyzing the contemporary pollen rain in different plant communities of the other parts of Poland indicates that during the formation stage of the Holocene soils in the Bledow Desert, the aforementioned tree species were dominant in the composition of forests and that the presence of a large contribution of pollen from lime and pollen in the soil was determined by their properties and ability to persist in the paleosol. © 2018, Pleiades Publishing, Ltd.},
note = {2},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A palynological analysis was made of the paleosoil (less than 20 cm in thickness) of the age of 4110 ± 110 BP which had formed on the top of river sediments and was subsequently covered with aeolian sands (3.6 m thick) of the so–called Bledow Desert. The results of the palynological analysis indicate: (1) the dominant role of pollen from lime (Tilia) among the tree species; (2) substantial amounts of pollen from maple (Acer); (3) a significant presence of pollen from heather (Ericaceae), and 4) an increase in the contribution of pollen from plants (including grains) associated with human activity. A comparison of data obtained with results from analyzing the contemporary pollen rain in different plant communities of the other parts of Poland indicates that during the formation stage of the Holocene soils in the Bledow Desert, the aforementioned tree species were dominant in the composition of forests and that the presence of a large contribution of pollen from lime and pollen in the soil was determined by their properties and ability to persist in the paleosol. © 2018, Pleiades Publishing, Ltd.
2017
Rahmonov, O.; Szczypek, T.; Niedźwiedź, T.; Myga-Piątek, U.; Rahmonov, M.; Snytko, V. A.
The human impact on the transformation of juniper forest landscape in the western part of the Pamir-Alay range (Tajikistan) Journal Article
In: Environmental Earth Sciences, vol. 76, no. 8, 2017, ISSN: 18666280, (14).
@article{2-s2.0-85018524263,
title = {The human impact on the transformation of juniper forest landscape in the western part of the Pamir-Alay range (Tajikistan)},
author = { O. Rahmonov and T. Szczypek and T. Niedźwiedź and U. Myga-Piątek and M. Rahmonov and V.A. Snytko},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85018524263&doi=10.1007%2fs12665-017-6643-4&partnerID=40&md5=499ba0452cb9af79f623030d39cef0d5},
doi = {10.1007/s12665-017-6643-4},
issn = {18666280},
year = {2017},
date = {2017-01-01},
journal = {Environmental Earth Sciences},
volume = {76},
number = {8},
publisher = {Springer Verlag},
abstract = {Detailed analyses were conducted of human impact on juniper forest landscapes occurring within the Zarafshan Range (Pamir-Alay). Juniperus seravschanica and J. semiglobosa belong to forest-forming species in Central Asia. At present, juniper forests all over Tajikistan are seriously threatened as a result of excessive logging and cattle grazing. The aim of this paper is to present juniper forest transformation as a result of human activities as well as the diversity of soil properties in the organic and humus horizons in the altitudinal system of soil zonation. Three groups of phytocoenoses were distinguished: those with a dominant share of Juniperus seravschanica; those with a dominant share of J. semiglobosa; and mixed. Associations with Juniperus seravschanica and J. semiglobosa feature several variants of phytocoenoses with dominant species: Artemisia lehmanniana, A. dracunculus, Eremurus olgae, Festuca sulcata, Ligularia thomsonii, Stipa turkestanica, Thymus seravschanicus, and Ziziphora pamiroalaica. The collected soil samples differ in their granulometric composition. Gravelly cobble fractions >2 mm are dominant; the share of sandy particles <2 mm is much lower (about 10–20%). Fraction 0.5–0.05 attains 35% on average. The Corg content of the soil varied from 0.26 to 11.40% in the humus horizon (A) and from 4.3 to 25% in the organic (O). Similar relationships were reported in the case of Ntot concentration. A clear relationship can be observed between concentrations of Corg and Ntot. Soil pH varied, ranging from very low acidic (pH 5.5) to neutral (pH 8.5). The content of available P varied; high concentrations were noted in organic (O) (40.46–211 mg kg−1) and mixed horizons (OA) (2.61–119 mg kg−1). Maximum accumulations of Pavail (1739.6 mg kg−1) and Ptot (9696 mg kg−1) were observed at a site heavily affected by intense grazing. Concentrations of Mgavail varied from 116 to 964 mg kg−1. Most of the analysed soil profiles lacked an organic horizon; only thin humus occurred. © 2017, The Author(s).},
note = {14},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Detailed analyses were conducted of human impact on juniper forest landscapes occurring within the Zarafshan Range (Pamir-Alay). Juniperus seravschanica and J. semiglobosa belong to forest-forming species in Central Asia. At present, juniper forests all over Tajikistan are seriously threatened as a result of excessive logging and cattle grazing. The aim of this paper is to present juniper forest transformation as a result of human activities as well as the diversity of soil properties in the organic and humus horizons in the altitudinal system of soil zonation. Three groups of phytocoenoses were distinguished: those with a dominant share of Juniperus seravschanica; those with a dominant share of J. semiglobosa; and mixed. Associations with Juniperus seravschanica and J. semiglobosa feature several variants of phytocoenoses with dominant species: Artemisia lehmanniana, A. dracunculus, Eremurus olgae, Festuca sulcata, Ligularia thomsonii, Stipa turkestanica, Thymus seravschanicus, and Ziziphora pamiroalaica. The collected soil samples differ in their granulometric composition. Gravelly cobble fractions >2 mm are dominant; the share of sandy particles <2 mm is much lower (about 10–20%). Fraction 0.5–0.05 attains 35% on average. The Corg content of the soil varied from 0.26 to 11.40% in the humus horizon (A) and from 4.3 to 25% in the organic (O). Similar relationships were reported in the case of Ntot concentration. A clear relationship can be observed between concentrations of Corg and Ntot. Soil pH varied, ranging from very low acidic (pH 5.5) to neutral (pH 8.5). The content of available P varied; high concentrations were noted in organic (O) (40.46–211 mg kg−1) and mixed horizons (OA) (2.61–119 mg kg−1). Maximum accumulations of Pavail (1739.6 mg kg−1) and Ptot (9696 mg kg−1) were observed at a site heavily affected by intense grazing. Concentrations of Mgavail varied from 116 to 964 mg kg−1. Most of the analysed soil profiles lacked an organic horizon; only thin humus occurred. © 2017, The Author(s).
2016
Rahmonov, O.; Snytko, V. A.; Szczypek, T.
Influence of melioration in natural ecological processes of a small river valley (Poland) Journal Article
In: Geography and Natural Resources, vol. 37, no. 4, pp. 379-384, 2016, ISSN: 18753728, (3).
@article{2-s2.0-85007399983,
title = {Influence of melioration in natural ecological processes of a small river valley (Poland)},
author = { O. Rahmonov and V.A. Snytko and T. Szczypek},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007399983&doi=10.1134%2fS1875372816040132&partnerID=40&md5=d08f76b2a49ad26b0cc118ddae914951},
doi = {10.1134/S1875372816040132},
issn = {18753728},
year = {2016},
date = {2016-01-01},
journal = {Geography and Natural Resources},
volume = {37},
number = {4},
pages = {379-384},
publisher = {Springer Science+Business Media},
abstract = {On the basis of the topographic maps from 1933, 1951 and 1962 (sc 1:10 000; 1:25 000 and 1:100 000; respectively) and the satellite image from 2014 (sc 1:10 000), we determined changes in the channel of the small Brynica river (Southern Poland) as well as in the land-use pattern along this river valley after its melioration. Terrain regulation and drainage brought about an intensification of the overland runoff, and a decrease in irrigation of the territory. Due to soil overdrying, some tracts of the valley are experiencing a moisture deficiency. Peat drying can lead to negative consequences, because shallow peats mostly occur on the study territory. Disappearance of peaty soils acts to decrease the degree of suitability of the riverside territories for economic purposes as well as their capacity for recovery. The schematic map of vegetation distribution along the river valley prior to and after melioration as compiled from results of field observations displays differences between mosaic quasi-natural vegetation and areas of typical agrocenoses. The preservation of the natural values along the Brynica valley is possible through balanced economic management, while the differentiation of topography contributes to creating favorable conditions for the formation of biodiversity. © 2016, Pleiades Publishing, Ltd.},
note = {3},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
On the basis of the topographic maps from 1933, 1951 and 1962 (sc 1:10 000; 1:25 000 and 1:100 000; respectively) and the satellite image from 2014 (sc 1:10 000), we determined changes in the channel of the small Brynica river (Southern Poland) as well as in the land-use pattern along this river valley after its melioration. Terrain regulation and drainage brought about an intensification of the overland runoff, and a decrease in irrigation of the territory. Due to soil overdrying, some tracts of the valley are experiencing a moisture deficiency. Peat drying can lead to negative consequences, because shallow peats mostly occur on the study territory. Disappearance of peaty soils acts to decrease the degree of suitability of the riverside territories for economic purposes as well as their capacity for recovery. The schematic map of vegetation distribution along the river valley prior to and after melioration as compiled from results of field observations displays differences between mosaic quasi-natural vegetation and areas of typical agrocenoses. The preservation of the natural values along the Brynica valley is possible through balanced economic management, while the differentiation of topography contributes to creating favorable conditions for the formation of biodiversity. © 2016, Pleiades Publishing, Ltd.
2014
Rahmonov, O.; Holbegov, M.; Szczypek, T.; Snytko, V. A.; Kłys, G.; Rahmonova, M.
In: Geography and Natural Resources, vol. 35, no. 2, pp. 193-197, 2014, ISSN: 18753728, (7).
@article{2-s2.0-84903391986,
title = {The consequences of vegetation degradation under the influence of anthropogenic activity in the territory of the Zarafshan Range (Western Tajikistan)},
author = { O. Rahmonov and M. Holbegov and T. Szczypek and V.A. Snytko and G. Kłys and M. Rahmonova},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84903391986&doi=10.1134%2fS1875372814020127&partnerID=40&md5=16aa5a464c82c89914eb9c4350f07941},
doi = {10.1134/S1875372814020127},
issn = {18753728},
year = {2014},
date = {2014-01-01},
journal = {Geography and Natural Resources},
volume = {35},
number = {2},
pages = {193-197},
publisher = {Springer Science+Business Media},
abstract = {We examine the richness and diversity of the flora of the Zarafshan Range in Tajikistan by using endemic species as an example. We determined the character and type of ecosystems, and the presence of endemics in a particular biotope. A potential threat to the unique ecosystems is brought by the cutting down of shrubs and juniper vegetation, unauthorized removal of rare plants, gathering of edible plants as well as waterlogging of the territory. © 2014 Pleiades Publishing, Ltd.},
note = {7},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
We examine the richness and diversity of the flora of the Zarafshan Range in Tajikistan by using endemic species as an example. We determined the character and type of ecosystems, and the presence of endemics in a particular biotope. A potential threat to the unique ecosystems is brought by the cutting down of shrubs and juniper vegetation, unauthorized removal of rare plants, gathering of edible plants as well as waterlogging of the territory. © 2014 Pleiades Publishing, Ltd.
2013
Rahmonov, O.; Snytko, V. A.; Szczypek, T.; Parusel, T.
Vegetation development on post-industrial territories of the Silesian Upland (Southern Poland) Journal Article
In: Geography and Natural Resources, vol. 34, no. 1, pp. 96-103, 2013, ISSN: 18753728, (12).
@article{2-s2.0-84876439842,
title = {Vegetation development on post-industrial territories of the Silesian Upland (Southern Poland)},
author = { O. Rahmonov and V.A. Snytko and T. Szczypek and T. Parusel},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876439842&doi=10.1134%2fS1875372813010137&partnerID=40&md5=a741d710902b0c9d021f45a6347533b5},
doi = {10.1134/S1875372813010137},
issn = {18753728},
year = {2013},
date = {2013-01-01},
journal = {Geography and Natural Resources},
volume = {34},
number = {1},
pages = {96-103},
abstract = {Destruction of vegetation cover on post-industrial barren lands is considered. The process of ecological succession is governed by the character of substratum, and by the type of emerging disturbance. In the majority of cases, the processes are initiated and conditioned by Calamagrostis epigejos. © 2013 Pleiades Publishing, Ltd.},
note = {12},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Destruction of vegetation cover on post-industrial barren lands is considered. The process of ecological succession is governed by the character of substratum, and by the type of emerging disturbance. In the majority of cases, the processes are initiated and conditioned by Calamagrostis epigejos. © 2013 Pleiades Publishing, Ltd.
2011
Rahmonov, O.; Rahmonova, M.; Snytko, V. A.; Szczypek, T.
Anthropogenic disturbance to vegetation on the polygon-transect in the Kulikalon depression (Tajikistan) Journal Article
In: Geography and Natural Resources, vol. 32, no. 4, pp. 386-393, 2011, ISSN: 18753728, (9).
@article{2-s2.0-84876422519,
title = {Anthropogenic disturbance to vegetation on the polygon-transect in the Kulikalon depression (Tajikistan)},
author = { O. Rahmonov and M. Rahmonova and V.A. Snytko and T. Szczypek},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876422519&doi=10.1134%2fS1875372811040147&partnerID=40&md5=fe309f7ab74da8bdb1885dd9829b4870},
doi = {10.1134/S1875372811040147},
issn = {18753728},
year = {2011},
date = {2011-01-01},
journal = {Geography and Natural Resources},
volume = {32},
number = {4},
pages = {386-393},
abstract = {Investigations into the vegetation cover on the polygon-transect in the Kulikalon depression (Tajikistan) revealed the influence of anthropogenic pressure on the ecosystem of archovniks (juniper forests). Archovniks constitute the main landscape component of the Zarafshan geobotanical region. Only small areas occupied by them are not disturbed by human economic activity on the territory of the Kulikalon depression. © 2011 Pleiades Publishing, Inc.},
note = {9},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Investigations into the vegetation cover on the polygon-transect in the Kulikalon depression (Tajikistan) revealed the influence of anthropogenic pressure on the ecosystem of archovniks (juniper forests). Archovniks constitute the main landscape component of the Zarafshan geobotanical region. Only small areas occupied by them are not disturbed by human economic activity on the territory of the Kulikalon depression. © 2011 Pleiades Publishing, Inc.
2010
Rahmonov, O.; Snytko, V. A.; Szczypek, T.
Anthropogenic changes in landscape of the Krakow-Czestochowa Upland (Southern Poland) Journal Article
In: Geography and Natural Resources, vol. 31, no. 2, pp. 177-182, 2010, ISSN: 18753728, (6).
@article{2-s2.0-77954099824,
title = {Anthropogenic changes in landscape of the Krakow-Czestochowa Upland (Southern Poland)},
author = { O. Rahmonov and V.A. Snytko and T. Szczypek},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-77954099824&doi=10.1016%2fj.gnr.2010.06.014&partnerID=40&md5=0fe238cc90ac4c1d690505ef9e7f8272},
doi = {10.1016/j.gnr.2010.06.014},
issn = {18753728},
year = {2010},
date = {2010-01-01},
journal = {Geography and Natural Resources},
volume = {31},
number = {2},
pages = {177-182},
abstract = {Based on field investigations, we have analyzed the terrain relief and the geological structure of substrate and described the physical features and chemical properties of soils as well as the character of vegetation along the transect. It is found that the catena under investigation is distinguished by attributes of anthropogenic impacts which are most clearly manifested in plant communities. © 2010.},
note = {6},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Based on field investigations, we have analyzed the terrain relief and the geological structure of substrate and described the physical features and chemical properties of soils as well as the character of vegetation along the transect. It is found that the catena under investigation is distinguished by attributes of anthropogenic impacts which are most clearly manifested in plant communities. © 2010.
2009
Rahmonov, O.; Snytko, V. A.; Szczypek, T.
Formation of phytogenic hillocks in Southern Poland Journal Article
In: Geography and Natural Resources, vol. 30, no. 4, pp. 399-402, 2009, ISSN: 18753728, (2).
@article{2-s2.0-70749097818,
title = {Formation of phytogenic hillocks in Southern Poland},
author = { O. Rahmonov and V.A. Snytko and T. Szczypek},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-70749097818&doi=10.1016%2fj.gnr.2009.11.017&partnerID=40&md5=8d99ff8c02e4d16eb191e98034cff6a5},
doi = {10.1016/j.gnr.2009.11.017},
issn = {18753728},
year = {2009},
date = {2009-01-01},
journal = {Geography and Natural Resources},
volume = {30},
number = {4},
pages = {399-402},
abstract = {We discuss the issues related to the formation of phytogenic hillocks on sand massifs in the eastern part of the Silesian Highlands. These regions formed on originally deflated fossil soils. The formation processes of hillocks are directly associated with the growth of Salix arenaria. The spread of Salix arenaria in deflation regions is not accidental but exhibits a direct linkage with underlying substrate, especially with the emergence of silt material in it. Species that colonize such regions form propagation cores of vegetation through the spread of secondary roots. Adventitious (daughter) branch roots of Salix arenaria that are responsible for the formation of phytogenic hillocks develop along the main mother roots. © 2009.},
note = {2},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
We discuss the issues related to the formation of phytogenic hillocks on sand massifs in the eastern part of the Silesian Highlands. These regions formed on originally deflated fossil soils. The formation processes of hillocks are directly associated with the growth of Salix arenaria. The spread of Salix arenaria in deflation regions is not accidental but exhibits a direct linkage with underlying substrate, especially with the emergence of silt material in it. Species that colonize such regions form propagation cores of vegetation through the spread of secondary roots. Adventitious (daughter) branch roots of Salix arenaria that are responsible for the formation of phytogenic hillocks develop along the main mother roots. © 2009.
Rahmonov, O.; Snytko, V. A.; Szczypek, T.
Phytogenic hillocks as an effect of indirect human activity Journal Article
In: Zeitschrift fur Geomorphologie, vol. 53, no. 3, pp. 359-370, 2009, ISSN: 03728854, (9).
@article{2-s2.0-70350284274,
title = {Phytogenic hillocks as an effect of indirect human activity},
author = { O. Rahmonov and V.A. Snytko and T. Szczypek},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-70350284274&doi=10.1127%2f0372-8854%2f2009%2f0053-0359&partnerID=40&md5=008e5de4c2aba7f2f908f4f569aac510},
doi = {10.1127/0372-8854/2009/0053-0359},
issn = {03728854},
year = {2009},
date = {2009-01-01},
journal = {Zeitschrift fur Geomorphologie},
volume = {53},
number = {3},
pages = {359-370},
abstract = {Phytogenic hillocks are landforms typical for areas built of blown sands. They occur in desert areas with hot and dry (desert) climate as well as in sandy areas in moderate humid climate. They are an effect of cooperation of wind with bushy vegetation of specific features. Under natural desert conditions they are created at e. g. participation of tamarisks and they can reach the height of 6-7 m. In moderate climate, e. g. in area of seaside dunes they are formed at participation of other species and reach decidedly smaller heights. They can also originate in areas of blown inland sands, which were uncovered owing to human activity. One of such areas is located in Silesian Upland in southern Poland (so-called Bledow "Desert"), which beginning goes back to the Middle Ages. It is connected with deforestation, mainly for the needs of contemporary lead, silver and zinc metallurgy. Presently this area is covered in result of intentional vegetation introduction as well as by natural vegetation expansion and succession. One of species intensively entering into this area is Salix arenaria. And just at participation of this bushy willow in deflation areas very characteristic phytogenic hillocks of heights reaching up to 1,5 m are here created using more humid clayey insertions of substratum. They are an effect of these bushes covering up, thanks to which this plant spreads and creates larger and larger landforms. In area discussed it is possible to observe different development stages of phytogenic hillocks-from initial through mature to disappearing ones. The oldest from them were started to create in the period 1973-1976, wherefore the youngest-in the years 2000-2002. The age of hills was determined on the base of dendrochronological analysis. These hills have different shapes and heights, which are conditioned by the intensity of aeolian processes. It is possible to state that phytogenic hillocks of so-called Bledow "Desert" are created by natural physicogeographical processes but conditions for their development were prepared by human being. Thus they are the effect of indirect anthropogenic activity. © 2009 Gebrüder Bornraeger.},
note = {9},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Phytogenic hillocks are landforms typical for areas built of blown sands. They occur in desert areas with hot and dry (desert) climate as well as in sandy areas in moderate humid climate. They are an effect of cooperation of wind with bushy vegetation of specific features. Under natural desert conditions they are created at e. g. participation of tamarisks and they can reach the height of 6-7 m. In moderate climate, e. g. in area of seaside dunes they are formed at participation of other species and reach decidedly smaller heights. They can also originate in areas of blown inland sands, which were uncovered owing to human activity. One of such areas is located in Silesian Upland in southern Poland (so-called Bledow "Desert"), which beginning goes back to the Middle Ages. It is connected with deforestation, mainly for the needs of contemporary lead, silver and zinc metallurgy. Presently this area is covered in result of intentional vegetation introduction as well as by natural vegetation expansion and succession. One of species intensively entering into this area is Salix arenaria. And just at participation of this bushy willow in deflation areas very characteristic phytogenic hillocks of heights reaching up to 1,5 m are here created using more humid clayey insertions of substratum. They are an effect of these bushes covering up, thanks to which this plant spreads and creates larger and larger landforms. In area discussed it is possible to observe different development stages of phytogenic hillocks-from initial through mature to disappearing ones. The oldest from them were started to create in the period 1973-1976, wherefore the youngest-in the years 2000-2002. The age of hills was determined on the base of dendrochronological analysis. These hills have different shapes and heights, which are conditioned by the intensity of aeolian processes. It is possible to state that phytogenic hillocks of so-called Bledow "Desert" are created by natural physicogeographical processes but conditions for their development were prepared by human being. Thus they are the effect of indirect anthropogenic activity. © 2009 Gebrüder Bornraeger.
2004
Ovchinnikov, G. I.; Snytko, V. A.; Szczypek, T.; Wika, S.
The barchan landscape on the Argada river in Barguzin Basin (Transbaikalya) Journal Article
In: Quaestiones Geographicae, no. 23, pp. 55-62, 2004, ISSN: 0137477X.
@article{2-s2.0-40149084861,
title = {The barchan landscape on the Argada river in Barguzin Basin (Transbaikalya)},
author = { G.I. Ovchinnikov and V.A. Snytko and T. Szczypek and S. Wika},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-40149084861&partnerID=40&md5=578599d3e34ad77efcc446680c48462b},
issn = {0137477X},
year = {2004},
date = {2004-01-01},
journal = {Quaestiones Geographicae},
number = {23},
pages = {55-62},
abstract = {This elaboration presents morphology of barchan developing on the valley edge, cut by a meandering river. Barchan moves towards south, covering with sand esporto grass - absinth steppe. At dune area psammosteppe vegetation has been formed. The basic community is Oxytropis lanata-Bromopsis pumpelliana, which - in dependence on wind influence degree - occurs in three development phases: initial, optimal and terminal.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This elaboration presents morphology of barchan developing on the valley edge, cut by a meandering river. Barchan moves towards south, covering with sand esporto grass - absinth steppe. At dune area psammosteppe vegetation has been formed. The basic community is Oxytropis lanata-Bromopsis pumpelliana, which - in dependence on wind influence degree - occurs in three development phases: initial, optimal and terminal.
Chibilyov, A. A.; Snytko, V. A.; Szczypek, T.
Contemporary aeolian landforms and deposits in the ural river basin (south Russia) Journal Article
In: Acta Universitatis Carolinae, Geographica, vol. 39, no. 1, pp. 85-94, 2004, ISSN: 03005402.
@article{2-s2.0-27744563633,
title = {Contemporary aeolian landforms and deposits in the ural river basin (south Russia)},
author = { A.A. Chibilyov and V.A. Snytko and T. Szczypek},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-27744563633&partnerID=40&md5=046f9b2bb4d3085077862481e0ffd61c},
issn = {03005402},
year = {2004},
date = {2004-01-01},
journal = {Acta Universitatis Carolinae, Geographica},
volume = {39},
number = {1},
pages = {85-94},
abstract = {This paper presents main features of environment conditions of the steppe zone in southern Russia in Orenburg Region. These features make a background where contemporary aeolian landforms of psammosteppes are discussed. Mechanical features of dune sediments (grain size distribution and sand abrasion) are also discussed and compared to the substratum sediments. The observations included the Irtek river valley and the interfluve area of the Ilek and Khobda rivers.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This paper presents main features of environment conditions of the steppe zone in southern Russia in Orenburg Region. These features make a background where contemporary aeolian landforms of psammosteppes are discussed. Mechanical features of dune sediments (grain size distribution and sand abrasion) are also discussed and compared to the substratum sediments. The observations included the Irtek river valley and the interfluve area of the Ilek and Khobda rivers.
2003
Jankowski, A. T.; Snytko, V. A.; Szczypek, T.
In: Czasopismo Geograficzne, vol. 74, no. 1-2, pp. 119-125, 2003, ISSN: 00459453.
@article{2-s2.0-35448938124,
title = {Threats to ecosystems on Lake Baikal western shore as a result of tourist traffic (a case study of the Goloustnaia delta) [Zagrożenia geosystemów zachodniego wybrzeża Bajkału wskutek ruchu turystycznego (na przykładzie okolic delty Gołoustnej)]},
author = { A.T. Jankowski and V.A. Snytko and T. Szczypek},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-35448938124&partnerID=40&md5=057aaa79effe0b22d434b7bc153edbf8},
issn = {00459453},
year = {2003},
date = {2003-01-01},
journal = {Czasopismo Geograficzne},
volume = {74},
number = {1-2},
pages = {119-125},
publisher = {University of Wroclaw},
abstract = {The elaboration presents short characteristics of five main ecosystems of the neighbourhood of the Goloustnaia river delta on western shore of lake Baikal (1 - of mountain taiga of Primorski khrebet hilltop parts, 2 - of subtaiga and steppe of western slopes of Primorski khrebet, 3 - of subtaiga and steppe of submountain plains, 4 - of river valleys bottoms and 5 - of near-shore - fig. 1A) paying the attention to the more interesting natural objects (fig. 2, 3, 4). It also presents the evaluation of geosystems for tourist purposes (fig. 1B) and the degree of their resistance to anthropogenic threats (fig. 1C). It was stated that decided majority of this very attractive tourist area is - analogously to other similar places on Baikal - completely vulnerable to degradation. Therefore it is necessary to regulate and control the tourist traffic.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The elaboration presents short characteristics of five main ecosystems of the neighbourhood of the Goloustnaia river delta on western shore of lake Baikal (1 - of mountain taiga of Primorski khrebet hilltop parts, 2 - of subtaiga and steppe of western slopes of Primorski khrebet, 3 - of subtaiga and steppe of submountain plains, 4 - of river valleys bottoms and 5 - of near-shore - fig. 1A) paying the attention to the more interesting natural objects (fig. 2, 3, 4). It also presents the evaluation of geosystems for tourist purposes (fig. 1B) and the degree of their resistance to anthropogenic threats (fig. 1C). It was stated that decided majority of this very attractive tourist area is - analogously to other similar places on Baikal - completely vulnerable to degradation. Therefore it is necessary to regulate and control the tourist traffic.
2001
Szczypek, T.; Snytko, V. A.; Wika, S.
Landscapes of modern aeolian sands on Olkhon Island (Lake Baikal Journal Article
In: Quaestiones Geographicae, no. 21, pp. 89-96, 2001, ISSN: 0137477X, (1).
@article{2-s2.0-0034776013,
title = {Landscapes of modern aeolian sands on Olkhon Island (Lake Baikal},
author = { T. Szczypek and V.A. Snytko and S. Wika},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0034776013&partnerID=40&md5=cfa50fdf16c878b1b42e9eda5445e037},
issn = {0137477X},
year = {2001},
date = {2001-01-01},
journal = {Quaestiones Geographicae},
number = {21},
pages = {89-96},
abstract = {This study presents principal results of geomorphological and geobotanical investigations realised on the areas of blowout aeolian sands on Olkhon Island of Lake Baikal. It also points out to the reasons of modern activation of aeolian processes and characterises two morphologically unlike fields of mobile sands and against a background of this the community with Oxytropis lanata - Chamaerhodos grandiflora with an endemic species Astragalus olchonensis.},
note = {1},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This study presents principal results of geomorphological and geobotanical investigations realised on the areas of blowout aeolian sands on Olkhon Island of Lake Baikal. It also points out to the reasons of modern activation of aeolian processes and characterises two morphologically unlike fields of mobile sands and against a background of this the community with Oxytropis lanata - Chamaerhodos grandiflora with an endemic species Astragalus olchonensis.
1989
Łaszczyca, P.; Lehouelleur, J.; Bruner, J.
Low calcium treatment provokes persistent spiking in tonic crayfish muscle. Journal Article
In: General physiology and biophysics, vol. 8, no. 2, pp. 171-176, 1989, ISSN: 02315882.
@article{2-s2.0-0024643710,
title = {Low calcium treatment provokes persistent spiking in tonic crayfish muscle.},
author = { P. Łaszczyca and J. Lehouelleur and J. Bruner},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0024643710&partnerID=40&md5=87cce4bdd30f2ff7804f9d83bbd4baad},
issn = {02315882},
year = {1989},
date = {1989-01-01},
journal = {General physiology and biophysics},
volume = {8},
number = {2},
pages = {171-176},
abstract = {[No abstract available]},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
[No abstract available]
1988
Lehouelleur, J.; Łaszczyca, P.; Bruner, J.
Sodium-dependent depolarizing potentials in veratrinized crayfish muscle fibres Journal Article
In: Neuroscience Letters, vol. 89, no. 3, pp. 299-304, 1988, ISSN: 03043940, (1).
@article{2-s2.0-0023948644,
title = {Sodium-dependent depolarizing potentials in veratrinized crayfish muscle fibres},
author = { J. Lehouelleur and P. Łaszczyca and J. Bruner},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0023948644&doi=10.1016%2f0304-3940%2888%2990543-5&partnerID=40&md5=6d447d0fcd4a419dab7acc5387f7de2c},
doi = {10.1016/0304-3940(88)90543-5},
issn = {03043940},
year = {1988},
date = {1988-01-01},
journal = {Neuroscience Letters},
volume = {89},
number = {3},
pages = {299-304},
abstract = {In the slow abdominal flexor muscle fibers of the crayfish Procambarus clarkii, veratrine or veratridine applied during several minutes produced the persistent transformation of the muscle fibre from a non-spiking into a Ca-dependent spiking one and spikes were followed by a long-duration depolarization. The long-duration potential depends on external Na+ but is not blocked by 30 μM tetrodotoxin (TTX). In solutions containing normal concentrations of Na+ (207 mM) the absence of Ca2+ or the presence of calcium channel blockers abolished both potentials. The results show that alkaloid toxins reveal a Ca2+-dependent, TTX-resistant Na+ conductance in crayfish tonic muscle fibres. © 1988.},
note = {1},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
In the slow abdominal flexor muscle fibers of the crayfish Procambarus clarkii, veratrine or veratridine applied during several minutes produced the persistent transformation of the muscle fibre from a non-spiking into a Ca-dependent spiking one and spikes were followed by a long-duration depolarization. The long-duration potential depends on external Na+ but is not blocked by 30 μM tetrodotoxin (TTX). In solutions containing normal concentrations of Na+ (207 mM) the absence of Ca2+ or the presence of calcium channel blockers abolished both potentials. The results show that alkaloid toxins reveal a Ca2+-dependent, TTX-resistant Na+ conductance in crayfish tonic muscle fibres. © 1988.