@article{2-s2.0-85178353318,

title = {Classification of Water Reservoirs in Terms of Ice Phenomena Using Advanced Statistical Methods—The Case of the Silesian Upland (Southern Poland)},

author = { M. Rzętała and M. Topolski and M. Solarski},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85178353318&doi=10.3390%2fw15223925&partnerID=40&md5=4c09e10a877f645579e5b913727cc2be},

doi = {10.3390/w15223925},

issn = {20734441},

year  = {2023},

date = {2023-01-01},

journal = {Water (Switzerland)},

volume = {15},

number = {22},

publisher = {Multidisciplinary Digital Publishing Institute (MDPI)},

abstract = {Ice phenomena occurring in water bodies are an important indicator of natural changes (e.g.; climate change) and the possibilities for economic use of water bodies (e.g.; using the ice cover); hence, there is a need to adopt new advanced statistical methods for the purpose of their analysis and assessment. Material for this study was collected for three winter seasons in 39 water bodies in the Silesian Upland (southern Poland). Nine variables were used in the analysis, of which three pertained to the features of the water bodies studied (surface area; mean depth; the amount of water retained), and six pertained patterns to of ice phenomena (average near-surface water temperature during ice phenomena; average and maximum ice thickness; the number of days with ice phenomena; the number of days with ice cover; and average thickness of the snow accumulated on ice). The centroid class principal component analysis (CCPCA) method was found to be the most precise of the five methods used in the study for classifying water bodies in terms of their ice regimes. It enabled the most accurate division of the group of water bodies covered by the study in terms of their ice regimes in conjunction with their morphometric features and hydrological types. The presented method of classifying water bodies using advanced statistical methods is an original proposal, which was used for the first time in limnological research and in the analysis of ice phenomena. © 2023 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85165122821,

title = {Planning Recreation around Water Bodies in Two Hard Coal Post-Mining Areas in Southern Poland},

author = { I. Kantor-Pietraga and R. Krzysztofik and M. Solarski},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85165122821&doi=10.3390%2fsu151310607&partnerID=40&md5=67c3bb48894af9f47748a513ca876bdd},

doi = {10.3390/su151310607},

issn = {20711050},

year  = {2023},

date = {2023-01-01},

journal = {Sustainability (Switzerland)},

volume = {15},

number = {13},

publisher = {Multidisciplinary Digital Publishing Institute (MDPI)},

abstract = {Green and blue infrastructure is a unique aspect of sustainable development in post-industrial and post-mining cities. The article examines the issue of the characteristic post-mining lake district in one of Europe’s largest urban and hard coal mining regions—the Katowice Conurbation in Southern Poland. This article aims to clarify the conditions and problems of developing post-mining water bodies as an element of blue and green infrastructure, with a particular focus on the issue of developing recreational functions. The latter aspect was analyzed using extensive CAVI (Computer-Assisted Web Interview)/CATI (Computer-Assisted Telephone Interviewing) surveys conducted among residents, in-depth stakeholder interviews, and strategic and planning document analysis. This research confirmed that residents and local authorities treat post-mining reservoirs as necessary for creating green and blue infrastructure. Recreational functions were perceived as one of the elements of urban policy, in which the preservation of valuable ecosystems created around reservoirs has the same place. An essential element of the research findings is also the typology of post-mining reservoirs presented here, which allows for a better understanding of the development dilemmas of these areas in a highly urbanized and post-mining area. © 2023 by the authors.},

note = {3},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85149917244,

title = {Toxic Metals, Non-Metals and Metalloids in Bottom Sediments as a Geoecological Indicator of a Water Body’s Suitability for Recreational Use},

author = { M.A. Rzętała and R. Machowski and M. Solarski and D. Bakota and A. Płomiński and M. Rzętała},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85149917244&doi=10.3390%2fijerph20054334&partnerID=40&md5=1bbaf32b72099df3486e225dc1447da5},

doi = {10.3390/ijerph20054334},

issn = {16617827},

year  = {2023},

date = {2023-01-01},

journal = {International Journal of Environmental Research and Public Health},

volume = {20},

number = {5},

publisher = {MDPI},

abstract = {The study of bottom sediments was conducted within the basins of water bodies used for recreational purposes (e.g.; bathing; fishing and diving) in the Silesian Upland and its periphery in southern Poland. Various concentrations of trace elements were found in bottom sediments, reflected by the following levels: Pb (30–3020 mg/kg), Zn (142–35;300 mg/kg), Cd (0.7–286 mg/kg), Ni (10–115 mg/kg), Cu (11–298 mg/kg), Co (3–40 mg/kg), Cr (22–203 mg/kg), As (8–178 mg/kg), Ba (263–19;300 mg/kg), Sb (0.9–52.5 mg/kg), Br (1–31 mg/kg), Sr (63–510 mg/kg) and S (0.001–4.590%). These trace elements are present in amounts that usually exceed those found in other bodies of water or are sometimes even unprecedented among bodies of water in the world (e.g.; cadmium—286 mg/kg; zinc—35;300 mg/kg; lead—3020 mg/kg; arsenic—178 mg/kg). It was found that bottom sediments were contaminated to varying degrees with toxic metals, metalloids and non-metals, as evidenced by the values of geoecological indicators, i.e., the geoaccumulation index (−6.31 < Igeo < 10.90), the sediment contamination factor (0.0 ≤ (Formula presented.) < 286.0), the sediment contamination degree (4.6 < Cd < 513.1) and the ratios of the concentrations found to the regional geochemical background (0.5 < IRE < 196.9). It was concluded that the presence of toxic elements (e.g.; lead; zinc; cadmium; chromium; strontium and arsenic) in bottom sediments should be taken into account when classifying water bodies as suitable for recreational use. A maximum ratio of the concentrations found to the regional geochemical background of IRE ≤ 5.0 was proposed as the threshold for the permissibility of recreational use of water bodies. The water bodies used for recreational purposes in the Silesian Upland and its periphery do not meet the geoecological conditions for safe use in terms of recreation and leisure activities. Forms of their recreational use that directly affect the participants’ health (e.g.; fishing and the consumption of fish and other aquatic organisms) should be abandoned. © 2023 by the authors.},

note = {1},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85143650239,

title = {A Comparison of Model Calculations of Ice Thickness with the Observations on Small Water Bodies in Katowice Upland (Southern Poland)},

author = { M. Solarski and M. Rzętała},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85143650239&doi=10.3390%2fw14233886&partnerID=40&md5=6416e8bb91519bfc20f1d9f04005ee80},

doi = {10.3390/w14233886},

issn = {20734441},

year  = {2022},

date = {2022-01-01},

journal = {Water (Switzerland)},

volume = {14},

number = {23},

publisher = {MDPI},

abstract = {Small bodies of water in densely populated areas have not yet been thoroughly studied in terms of their ice cover. Filling the existing research gap related to ice cover occurrence is therefore important for identifying natural processes (e.g.; response to climate warming and water oxygenation in winter), and also has socio-economic significance (e.g.; reducing the risk of loss of health and life for potential ice cover users). This paper addresses the issue of determining the utility of two simple empirical models based on the accumulated freezing degree-days (AFDD) formula for predicting maximum ice thickness in water bodies. The study covered 11 small anthropogenic water bodies located in the Katowice Upland and consisted of comparing the values obtained from modelling with actual ice thicknesses observed during three winter seasons (2009/2010; 2010/2011; and 2011/2012). The best fit was obtained between the values observed and those calculated using Stefan’s formula with an empirical coefficient of 0.014. A poorer fit was obtained for Zubov’s formula (with the exception of the 2011/2012 season), which is primarily due to the fact that this model does not account for the thickness of the snow accumulated on the ice cover. Bengst’cise forecasting of the state of the ice cover and the provision of the relevant information to interested users will increase the safety of using such water bodies in climate warming conditions, reducing the number of accidents. © 2022 by the authors.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85125154026,

title = {Hypsometric changes in urban areas resulting from multiple years of mining activity},

author = { M. Solarski and R. Machowski and M. Rzętała and M.A. Rzętała},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85125154026&doi=10.1038%2fs41598-022-06847-8&partnerID=40&md5=a23d658ae3d2a0109e866c48895debed},

doi = {10.1038/s41598-022-06847-8},

issn = {20452322},

year  = {2022},

date = {2022-01-01},

journal = {Scientific Reports},

volume = {12},

number = {1},

publisher = {Nature Research},

abstract = {The impact of multiple years of underground mining of minerals on changes in the elevation of an urban area has been evaluated using the case study of Bytom in southern Poland. Between 1883 and 2011, that city experienced changes in absolute minimum (from 250.0 to 243.0 m a.s.l.) and maximum (from 340.0 to 348.4 m a.s.l.) elevations. During that period, the difference between minimum and maximum elevations increased from 90.0 to 105.4 m. The consequence of underground mining has been the formation of extensive subsidence basins with a maximum depth of 35 m. Where the terrain became raised, its elevation rose most commonly by 1.1 m to 5.0 m, with maximum increase in elevation caused by human activity amounting to 35 m. The rate of anthropogenic subsidence in the city between 1883 and 2011 averaged 43 mm/year (5.5 m over the study period). © 2022, The Author(s).},

note = {14},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85136935995,

title = {Determinants of Spatial Variability of Ice Thickness in Lakes in High Mountains of the Temperate Zone—The Case of the Tatra Mountains},

author = { M. Solarski and M. Rzętała},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85136935995&doi=10.3390%2fw14152360&partnerID=40&md5=2a20a10f4c9af23ecf34c74f7e557b82},

doi = {10.3390/w14152360},

issn = {20734441},

year  = {2022},

date = {2022-01-01},

journal = {Water (Switzerland)},

volume = {14},

number = {15},

publisher = {MDPI},

abstract = {Vertical and horizontal variation in the ice cover of mountain lakes in the temperate climate zone has not been thoroughly studied. The study concerned ice phenomena in four lakes located in the Tatra National Park in the Tatra Mountains (the Czarny Staw Gąsienicowy; Czarny Staw pod Rysami; Morskie Oko; and Smreczyński Staw). The research, which was conducted in the 2018/2019 winter season, included an analysis of variability in atmospheric conditions, an analysis of presence of ice phenomena on satellite images, field work (measurements of ice layer and of snow and slush layer thickness were conducted at a total of 151 sites), and statistical analyses. It was determined that negative air temperature was just one factor among those that determined the maximum thickness of the ice forming on lakes in high mountains. It was found that in addition to ambient thermal conditions, a major factor affecting the magnitude of variation in lake ice thickness was the thickness of the snow overlying the ice and its spatial variability. Thicker ice cover tended to form in areas where a thick layer of snow was deposited. The decisive factor that contributed to a significant variation in ice thickness between lakes was the uneven accretion of snow ice from above. The maximum ice thickness values modeled using Stefan’s formula were significantly underestimated (accounting for 38–61% of the ice thickness measured) relative to the highest ice thickness values found empirically at the end of the winter season. Study results fill a gap in our knowledge and methodology related to vertical and horizontal variation in the ice cover of mountain lakes; they also have significant applications, indicating the risk of winter use of water bodies with different ice cover structure, thickness, and extent. © 2022 by the authors.},

note = {2},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85112510066,

title = {Is the naturalization of the townscape a condition of de-industrialization? An example of bytom in southern poland},

author = { M. Solarski and R. Krzysztofik},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85112510066&doi=10.3390%2fland10080838&partnerID=40&md5=5883f99733faae3bb31c23691257290b},

doi = {10.3390/land10080838},

issn = {2073445X},

year  = {2021},

date = {2021-01-01},

journal = {Land},

volume = {10},

number = {8},

publisher = {MDPI AG},

abstract = {A characteristic element of the transformations of cities in Central and Eastern Europe after 1990 was the emergence of shrinking cities. The main problem related to shrinking cities is around how this process developed as a result of rapidly intensifying de-industrialization. While many studies in this area are devoted to demographic, social, and economic issues, relatively few studies address the spatial dimension. In this article, the example of spatial development in the (post-) mining city of Bytom in southern Poland is discussed, pointing to the need for a multifaceted approach to this issue. This article begins with an attempt to contextualize this issue within a broader time perspective. Such an analysis makes it possible to better situate contemporary changes in the context of the processes that were visible in previous periods. Next, these changes are described using two methods. The basis of the first method is comparisons between the different types of land use. The second method, which is emphasized, is the method of A. Macias, which indicates the degree of naturalization/anthropogenization of space. Macias’ method is crucial in the context of discussions about the future of post-mining towns, where attention is paid, among other things, to the issue of sustainable development. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.},

note = {3},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85107267992,

title = {Changes in the Thickness of Ice Cover on Water Bodies Subject to Human Pressure (Silesian Upland, Southern Poland)},

author = { M. Solarski and M. Rzętała},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107267992&doi=10.3389%2ffeart.2021.675216&partnerID=40&md5=36bfd3936a608c8ab228f8a90f8e023f},

doi = {10.3389/feart.2021.675216},

issn = {22966463},

year  = {2021},

date = {2021-01-01},

journal = {Frontiers in Earth Science},

volume = {9},

publisher = {Frontiers Media S.A.},

abstract = {The paper discusses the reasons behind the variation in the thickness of ice on 39 anthropogenic water bodies located in the Silesian Upland (southern Poland). The studies were conducted over the course of three consecutive winter seasons. The measurements and observations were scheduled every 2 days during the freezing and ablation of the ice, and every 4 days when ice cover was present. Each time the thickness of the ice cover and the snow layer covering it were measured. The results show that the 35 water bodies studied are characterized by a similar—quasi-natural—ice regime, in which ice thickness variation depends mostly on the air temperature and the thickness of the snow layer covering the ice. The ice thickness on those water bodies does not significantly differ from that observed on lakes located in northern Poland, measuring on average from circa 4 to 21 cm, and with maximum thicknesses ranging from circa 14 to 40 cm, depending on the season. Four water bodies are characterized by different ice conditions; in their case the average and maximum ice thickness was significantly lower. In the Niezdara N water body this was caused by the inflow of warmer potamic water (quasi-natural regime), whereas in Pod Borem, Sośnicka, and Somerek it was caused by discharges of warm mine water (anthropogenic regime). © Copyright © 2021 Solarski and Rzetala.},

note = {2},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85092252879,

title = {Conditions of spatiotemporal variability of the thickness of the ice cover on lakes in the Tatra Mountains},

author = { M. Solarski and M. Szumny},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85092252879&doi=10.1007%2fs11629-019-5907-8&partnerID=40&md5=547dcde52377f75526ab2a3f7cb66a53},

doi = {10.1007/s11629-019-5907-8},

issn = {16726316},

year  = {2020},

date = {2020-01-01},

journal = {Journal of Mountain Science},

volume = {17},

number = {10},

pages = {2369-2386},

publisher = {Science Press},

abstract = {This research aimed to identify the impact of local climatic and topographic conditions on the formation and development of the ice cover in high-mountain lakes and the representativeness assessment of periodic point measurements of the ice cover thickness by taking into consideration the role of the avalanches on the icing of the lakes. Field works included measurement of the ice and snow cover thickness of seven lakes situated in the Tatra Mountains (UNESCO biosphere reserve) at the beginning and the end of the 2017/2018 winter season. In addition, morphometric, topographic and daily meteorological data of lakes from local IMGW (Polish Institute of Meteorology and Water Management) stations and satellite images were used. The obtained results enabled us to quantify the impact of the winter eolian snow accumulation on the variation in ice thickness. This variation was ranging from several centimetres up to about 2 meters and had a tendency to increase during the winter season. The thickest ice covers occurred in the most shaded places in the direct vicinity of rock walls. The obtained results confirm a dominating role of the snow cover in the variation of the ice thickness within individual lakes. © 2020, The Author(s).},

note = {5},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85090892058,

title = {Ice regime of the Kozlowa Góra reservoir (Southern Poland) as an indicator of changes of the thermal conditions of ambient air},

author = { M. Solarski and M. Rzętała},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85090892058&doi=10.3390%2fw12092435&partnerID=40&md5=33b13a5a3fdb7cbaf73a105b294963aa},

doi = {10.3390/w12092435},

issn = {20734441},

year  = {2020},

date = {2020-01-01},

journal = {Water (Switzerland)},

volume = {12},

number = {9},

publisher = {MDPI AG},

abstract = {Ice phenomena are construed as the occurrence of ice in water irrespective of its structure, form, and duration. One of the most frequently discussed research problems is the possibility of using long-term ice phenology as an indicator of changes of the thermal conditions of ambient air. The study used correlation analysis and regression models in order to determine changes in the parameters studied over time. In order to compare the ice regime of the study reservoir and other lakes in the region, discriminant function analysis, principal components analysis (PCA), and canonical redundancy analysis (RDA) were applied. During the 52 winter seasons studied (1964-2015), there were weak but still statistically significant trends concerning the increase in air temperature in the region (by 0.3 °C per decade), the reduction in the number of days with ice cover (by 8.6 days per decade) and the decline in the maximum and average thicknesses of lake ice (by 2.0 cm and 1.2 cm per decade). The low average depth and volume capacity are reflected in the rapid freezing rate of the reservoir, and its location results in a longer duration of ice cover, greater ice thickness, and later dates of its melting. © 2020 by the authors.},

note = {9},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85073053924,

title = {Anthropogenic enrichment of the chemical composition of bottom sediments of water bodies in the neighborhood of a non-ferrous metal smelter (Silesian Upland, Southern Poland)},

author = { R. Machowski and M.A. Rzętała and M. Rzętała and M. Solarski},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85073053924&doi=10.1038%2fs41598-019-51027-w&partnerID=40&md5=3cabff15cc551a721df8218572a3f290},

doi = {10.1038/s41598-019-51027-w},

issn = {20452322},

year  = {2019},

date = {2019-01-01},

journal = {Scientific Reports},

volume = {9},

number = {1},

publisher = {Nature Publishing Group},

abstract = {An assessment was carried out of the anthropogenic enrichment of the chemical composition of the bottom sediments of water bodies situated in an area with an urban and industrial character (63.7% of the total area). The endorheic catchments of the water bodies studied are lithologically uniform with sandy formations accounting for more than 90% of the surface area. On the basis of geoaccumulation index values, it was found that the bottom sediments of the water bodies studied were contaminated with the following elements: Cd, Zn, S, As, Pb, Sr, Co, Cr, Cu, Ba, Ni, V, Be, in degrees ranging from moderate to extreme, with lower contamination (or absence of contamination) with the same elements being found in the formations present in the vicinity and in the substrate of the basins of water bodies. It was found that one consequence of the fact that these water bodies are located in urban and industrial areas is that there is anthropogenic enrichment of the chemical composition of bottom sediments with certain basic components (organic matter; Mn; Ca and P compounds) and trace elements: Cd, Zn, Pb, Sb, As, Cu and Co, Br, Ni, S, Be, Cs, Sr, V, Cr, Sc, Ba, U, Ce, Eu and Th, with virtually no enrichment of sediments with the other basic and trace components analysed (La; Rb; K2O; Nd; Sm; Na2O; Hf; SiO2; Zr). © 2019, The Author(s).},

note = {15},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84990217604,

title = {Geomorphological and Hydrological Effects of Subsidence and Land use Change in Industrial and Urban Areas},

author = { R. Machowski and M.A. Rzętała and M. Rzętała and M. Solarski},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84990217604&doi=10.1002%2fldr.2475&partnerID=40&md5=f2d4ddae53d38553de8d3e9054905110},

doi = {10.1002/ldr.2475},

issn = {10853278},

year  = {2016},

date = {2016-01-01},

journal = {Land Degradation and Development},

volume = {27},

number = {7},

pages = {1740-1752},

publisher = {John Wiley and Sons Ltd},

abstract = {Land subsidence caused by mining activities is an example of human transformation of the natural environment and leads to changes in land use. The study covers an area of 958 ha in the Silesian Upland, southern Poland. Records from the period 1890–1990 document the presence of subsidence effects in 82.9% of the study area and the maximum displacement figure is more than 30 m which translates to an average rate of 0.3 m per year. It was found that subsidence basins serve as the new local erosion base and new sedimentation basins. They are filled with sediments whose level of pollution ranges from moderate to heavy and extremely heavy. Subsidence has caused a dramatic change in the local hydrology, including the quality and quantity of the water. The specifics involve: the emergence of new closed drainage catchments with a total area of 651.1 ha; an increase in the total watercourse length (from 0.9 to 5.7 km); an increase in the river network density (from 0.09 to 0.56 km km−2); a decrease in the number (from 81 to 48) and an increase in the area (from 23.8 to 58.4 ha) of lakes and ponds; an increase in the lake coverage ratio (from 2.5% to 6.1%) and in water pollution. Subsidence has limited the potential land uses, which led to a decrease in arable land from 619.0 to 122.5 ha that gave way to other land uses, including those equivalent to wasteland. Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.},

note = {34},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84904578935,

title = {Eutrophication of water reservoirs under anthropogenic, agricultural and industrial impacts (example of Southern Poland)},

author = { M.A. Rzętała and M. Solarski and A. Pradela and M. Rzętała},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84904578935&partnerID=40&md5=64dc636fba0e5acfacf5ca900b60517d},

issn = {09720626},

year  = {2014},

date = {2014-01-01},

journal = {Research Journal of Chemistry and Environment},

volume = {18},

number = {4},

pages = {49-55},

publisher = {International Congress of Chemistry and Environment},

abstract = {The purpose of the study was to identify the trophic level in retention water bodies located in Southern Poland (Central Europe). Thirty nine different water bodies were selected for study. In order to achieve the objectives of the study, the chlorophyll concentration was measured in the epilimnion layer of these reservoirs throughout the 2012 hydrological year. The water transparency during the summer season was also measured using the Secchi disc method. Based on the chlorophyll content and Secchi disc visibility, the Trophic State Index (TSI) values were calculated for chlorophyll α and Secchi disc visibility (Carlson method) and for chlorophyll α alone (Walker method). Additional measurements included the pH, dissolved oxygen, oxygenation and conductivity of the water. As demonstrated by the analyses conducted in the experiment, the annual average chlorophyll α content varied from approximately 2.5 ug/L in oligotrophic reservoirs (such as for example Pogoria III and Kuźnica Warȩżyńska), up to more than 70 ug/L in retention reservoirs holding strongly eutrophicated water (i.e. Rozlewisko Bytomki and Żabie Doły N). Water transparency ranged from over 5 m in oligotrophic reservoirs (5.1 m in Pogoria III and 5.5 m in Kuźnica Warȩżyńska), down to less than 0.5 m in hypertrophic reservoirs (Kamieniec -0.35 m and Rozlewisko Bytomki -0.45 m ). Based on the calculated TSI indicators and the classifications found in bibliographic sources covering chlorophyll content, the reservoirs covered by the study were classified according to their specific trophic type. There were three reservoirs classified as oligotrophic and eight as mesotrophic water bodies. There were 28 reservoirs at various stages of eutrophication, ranging from mesoeutrophic (3 reservoirs), eutrophic (18), to water bodies demonstrating seasonal or permanent signs of hypertrophy (7).},

note = {3},

keywords = {},

pubstate = {published},

tppubtype = {article}

}