Methodology and experience of landscape-limnological research into lake-basin systems of Ukraine

Kovalchuk, Ivan; Martyniuk, Vitalii

doi:10.1134/s1875372815030117

Cited by 7 publications

(3 citation statements)

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“…The results of geo-component studies, which are given above, became a prerequisite for the landscape analysis of the lake as a natural aquatic complex (NAC). According to the methodology (Kovalchuk & Martyniuk, 2015), the lake is considered a NAC of the rank of a complex aquatic tract. In the NAC of Lake Tuchne, based on the obtained results of bathymetry, the composition and thickness of bottom sediments, the species diversity of plant communities, and the temperature regime of water in the warm season of the year (April 15-October 15), we distinguished two aquatic sub-tracts and some aquafacies (Fig.…”

Section: Results and Analysismentioning

confidence: 99%

“…The article is based on the author's field expedition research of landscape complexes (territorial and aquatic) of the upper Pripyat basin (Klestov et al, 2001;Kovalchuk & Khilchevskyi, 2003;Zubkovych & Martyniuk, 2020) and analysis of the materials of the Kyiv Geological Exploration Expedition (Kyiv GEE). When choosing the research methodology, we relied on works on limnology (Evans, 2021), landscape and limnology analysis of the LBS (Kovalchuk & Martyniuk, 2015;Kovalchuk et al, 2020), GIS mapping of the LBS (Kovalchuk, 2014) and geo-ecological assessment of the LBS (Martyniuk et al, 2023). The object of the research was Lake Tuchne, located in the Upper Prypyat physical-geographical district of Volyn Polissia (Fig.…”

Section: Methodsmentioning

confidence: 99%

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The geoecological analysis of Lake Tuchne (Volyn Polissia) and assessment of sapropel reserves in it

Martyniuk,

Kovalchuk,

Zubkovych

et al. 2024

Journ. Geol., Geogr., and Geoec..

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The administrative-territorial reform in Ukraine, which began in 2015, opened up prospects for newly created territorial communities to determine the resource potential of local territories under control and develop strategies for balanced nature use and their progressive development. The lakes, which have a significant potential for sapropel resources, take an important place in the Polissia region of Ukraine. Given the above, there is a need for a comprehensive study of specific lakes and justification of recommendations for the rational use and protection of their water and sapropel resources. The object of our research is Lake Tuchne, Volyn Polissia. The catchment area of Lake Tuchne is 10.05 km2, and the reservoir itself is 0.39 km2. A bathymetric model of the lake was built with a depth interval of 0.5 m. The vegetation index (NDVI) for the reservoir over the past five years has been varying from -0.53 (12/02/2021) to +0.48 (07/15/2021). The research presents a stratigraphic section of the reservoir sediments. The area of accumulated sapropel is 20.5 hectares, the average thickness is 4.46 m, and the maximum is 10.0 m. The ash content of sapropel varies within 17.5-37.5% (on dry substance). The content of Fe2O3 in the core ranges from 2.53% to 7.26%. The distribution of CaO compounds in the samples ranges from 2.09 to 8.12%. The CO2 content varies from 1.97 to 9.72%. The concentration of Р2О5 in sapropel samples is 0.19-0.53%. The distribution of S in sapropel deposits ranges from 0.23 to 1.09%. The pH (salt extract) distribution in the core samples varies from moderately alkaline (7.63) to close to neutral – 5.97. A digital landscape map of the lake was constructed with the selection of the littoral and sublittoral-profundal aqua sub-areas and five types of aquafacies. A landscape-metric analysis of the natural and aquatic complex of the lake was carried out. The potential of water resources of Tuchne lake is 827.0 thousand m3. Sapropel reserves of category A are 914,000 m3, and based on a conditional 60.0% humidity, they are 155,000 tons. The species composition of sapropel is represented by zoogenic, organo-ferrous, and organo-limestone species. The total stock of sapropel in the lake basin is 52.5% of its volume. The reservoir is promising for extracting sapropel due to its quality characteristics and hydro-technical prerequisites for operation. Mined sapropel can be used in agriculture, medicine, recreation, etc. Implementing this task will improve the geoecological state of the lake and the quality of its water resources.

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Section: Results and Analysismentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

The geoecological analysis of Lake Tuchne (Volyn Polissia) and assessment of sapropel reserves in it

Martyniuk,

Kovalchuk,

Zubkovych

et al. 2024

Journ. Geol., Geogr., and Geoec..

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“…Today, bathymetric maps are widely used for studying underwater topography and physical-geographical characteristics of water objects bottom. They allow to receive detailed depth contours of water objects, define the size, form, and distribution of underwater objects [3], [7]- [9]. It should be noted, that water level fluctuations depend on atmospheric circulation, solar activity and processes related to it; rainfalls as well as subterranean sources of water supply if such exists [10].…”

Section: Introductionmentioning

confidence: 99%

Estimation the Subterranean Sources of Lakes Water Supply Based on Bathymetric Survey

Rusyn

Alokhina

Korus

et al. 2022

Environmental and Climate Technologies

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Modern technologies give an opportunity to create a large number of bathymetric maps, but less of them have been focused on processing the water depth data in order to study and estimate the subterranean sources of water object supply. This study aims to create a mechanism for estimating the productivity of subterranean sources of lakes water supply, based on bathymetric survey data. Lake Svitiaz was chosen as the study site as the deepest closed lake of natural origin in Ukraine with an area of 2500 ha and a maximum depth of 58.4 m. To get depth data, ground-based measurements were conducted using an echosounder Lowrance LMS-527cDF. The Lake morphometric changes were investigated, using bathymetric data and Sentinel A, and B data in the digital elevation model (15×15 m). Bathygrahic analysis was performed, allowing selecting areas for further echo-sounding, taking into account complex relief and specific basin forms of the Lake. To develop an appropriate technique for estimating the productivity of subterranean water supply sources, GIS and image (echogram) processing techniques were applied. The research tasks are completed as a technique for detecting ‘tracks’ and a mechanism that is quite effective, particularly for early evaluation of subterranean sources of water supply productivity that can be repeated on any similar water objects.

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Assessment of the Ecological and Geographical Condition of the Basin System Lakes Strilske (Hydrological Monument of Nature)

2021

Visnyk of v. N. Karazin Kharkiv National University Series "Ecology"

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Topicality. The available information on specific lakes of nature protection fund (NPF) objects, primarily of local significance, is limited to brief information on morphometric and hydrological characteristics, information on the rare component of aquatic organisms and the species diversity of the adjacent catchment areas. This state of affairs does not benefit the development of protected areas and encourages ecological and geographical searches of lakes or lake-basin systems, which are part of the NPF. Purpose is to assess the ecological and geographical condition of the lake basin system Strelske (hydrological monument of nature) for cadastral needs of NPF objects of Polissya region of Ukraine. Methods of regional constructive-geographical limnology, landscape-limnological analysis, soil-geochemical profiling of lake catchments, GIS-cartographic modeling. Results of the study are presented in the form of a cartographic model of the spatial-typological structure of the lands of the lake catchment. Shooting and substantiation of its geoecological condition, bathymetric map of the lake and morphological-morphometric and hydrological calculations of the LBS. The hydrochemical parameters of the lake were analyzed according to the block of indicators of salt composition, tropho-saprobiological characteristics and substances of toxic action. The lithological composition and capacity of the bottom sediments of the lake are estimated, the graphs of radial migration of chemical elements and compounds at one of the probing points are constructed and the qualitative composition of the lake sapropel is substantiated. Using GIS technologies, a landscape map of the natural-aqual complex of the lake was built. Shooting and landscape-metometric assessment of its morphological structure. Conclusions. The basin system has in the past undergone anthropogenic transformations as a result of reclamation nature management, which has limited the share of surface runoff into the lake. The lake water exceeded the MPC by 1.7 times the chemical oxygen demand, 1.6 times the biological oxygen demand and 2 times the total iron consumption. The lake basin is 65.7% filled with bottom sediments, which are represented mainly by organo-iron sapropel. The littoral aqua facies of the lake suffer the greatest anthropogenic load, which is connected with the recreational activities of the seasonally functioning recreation center.

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Methodology and experience of landscape-limnological research into lake-basin systems of Ukraine

Cited by 7 publications

References 1 publication

The geoecological analysis of Lake Tuchne (Volyn Polissia) and assessment of sapropel reserves in it

The geoecological analysis of Lake Tuchne (Volyn Polissia) and assessment of sapropel reserves in it

Estimation the Subterranean Sources of Lakes Water Supply Based on Bathymetric Survey

Assessment of the Ecological and Geographical Condition of the Basin System Lakes Strilske (Hydrological Monument of Nature)

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