Bibliographies thématiques / Balason catchment

Littérature scientifique sur le sujet « Balason catchment »

Auteur : Grafiati
Publié le 18 mai 2024

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Articles de revues sur le sujet "Balason catchment"

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Eck-Varanka, Bettina, Nóra Kováts, Árpád Benkő-Kiss, Eszter Horváth, Árpád Ferincz et Gábor Paulovits. « A najádok (Bivalvia : Unionidae) elterjedésének vizsgálata a Balaton-vízgyűjtő déli oldalán ». Kaposvári Rippl-Rónai Múzeum Közleményei, no 3 (2014) : 81–86. http://dx.doi.org/10.26080/krrmkozl.2014.3.81.

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The unionid mussel fauna of the complex system of waterflows, situated on the southern part of the Balaton-catchment was studied. Altogether thirty-seven sampling points on nine watercourses were sampled in order to de-scribe the mussel assemblages of these waters and to as-sess the actual distribution and abundance of chinese pond mussel (Sinanodonta woodiana) populations. Mussels were found in 46% of the localities, in six out of the nine sampled watercourses. Five native and one non-indigenous unionid mussel species were identified during the sampling campaign. The non-indigenous chinese pond mussel was the most fre-quent species, occurred in 13 sampling sites and its relative abundance was 15.5% in the whole sample. our study also revealed that fishponds are potential sources of the invasive S. woodiana in the Balaton-catchment.
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Németh, T., J. Szabó, L. Pásztor et Zs Bakacsi. « Elaboration of a complex GIS application in a catchment area ». Water Science and Technology 45, no 9 (1 mai 2002) : 133–40. http://dx.doi.org/10.2166/wst.2002.0223.

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Rearrangement of land resources after political changes has not yet been finished in Hungary. It is almost impossible to collect information necessary for planning activities on outer areas of settlements. The data are distributed among various organizations and can be found in diverse forms or there are no available data at all. However water quality protection has become legally ordered concerning municipal activities around Lake Balaton which is considered as the most important recreation area and tourist target in Hungary and is also affected by a number of factors providing sources of environmental conflicts. Settlements in a catchment area (Tetves Creek) on the southern shoreline of Lake Balaton in Central Hungary tendered a complex project for collecting sources of authentic data of the Hungarian rural areas along with systematizing and saving these data in a uniform GIS. An application using Autodesk MapGuide Program for Internet realization was developed. The implemented web-based system can be used in Internet and Intranet environments.
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Sümegi, Pál, Tünde Törőcsik, Gusztáv Jakab, Sándor Gulyás, Péter Pomázi, Péter Majkut, Dávid Gergely Páll, Gergő Persaits et Emese Bodor. « The environmental history of Fenékpuszta with a special attention to the climate and precipitation of the last 2000 years ». Journal of Environmental Geography 2, no 3-4 (1 juin 2009) : 5–14. http://dx.doi.org/10.14232/jengeo-2009-43869.

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This work presents the details of a multidisciplinary palaeoecological and geoarcheological study on the sedimentary sequences, including 2 undisturbed cores of the Little Balaton situated in the western part of Lake Balaton in Central Europe. The application of Quaternary palaeoecological analysis to peat and lacustrine deposits enables to identify long-term environmental changes in aquatic and terrestrial ecosystems. The principal aims were to shed light onto how former human societies and culture shaped and altered their natural environment on the one hand. Furthermore, to reconstruct the once existing environmental conditions within the framework of the natural evolution of the vegetation, soil, fauna and the catchment basin for the times preceding written historical records via the application of sedimentological, geochemical, isotope geochemical, palynological, macrobotanical, malacological and microfaunal analytical methods and approaches.
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Kertész, Ádám, Loránd Attila Nagy et Boglárka Balázs. « Effect of land use change on ecosystem services in Lake Balaton Catchment ». Land Use Policy 80 (janvier 2019) : 430–38. http://dx.doi.org/10.1016/j.landusepol.2018.04.005.

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Szabó, Brigitta, Gábor Szatmári, Katalin Takács, Annamária Laborczi, András Makó, Kálmán Rajkai et László Pásztor. « Mapping soil hydraulic properties using random-forest-based pedotransfer functions and geostatistics ». Hydrology and Earth System Sciences 23, no 6 (18 juin 2019) : 2615–35. http://dx.doi.org/10.5194/hess-23-2615-2019.

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Abstract. Spatial 3-D information on soil hydraulic properties for areas larger than plot scale is usually derived using indirect methods such as pedotransfer functions (PTFs) due to the lack of measured information on them. PTFs describe the relationship between the desired soil hydraulic parameter and easily available soil properties based on a soil hydraulic reference dataset. Soil hydraulic properties of a catchment or region can be calculated by applying PTFs on available soil maps. Our aim was to analyse the performance of (i) indirect (using PTFs) and (ii) direct (geostatistical) mapping methods to derive 3-D soil hydraulic properties. The study was performed on the Balaton catchment area in Hungary, where density of measured soil hydraulic data fulfils the requirements of geostatistical methods. Maps of saturated water content (0 cm matric potential), field capacity (−330 cm matric potential) and wilting point (−15 000 cm matric potential) for 0–30, 30–60 and 60–90 cm soil depth were prepared. PTFs were derived using the random forest method on the whole Hungarian soil hydraulic dataset, which includes soil chemical, physical, taxonomical and hydraulic properties of some 12 000 samples complemented with information on topography, climate, parent material, vegetation and land use. As a direct and thus geostatistical method, random forest combined with kriging (RFK) was applied to 359 soil profiles located in the Balaton catchment area. There were no significant differences between the direct and indirect methods in six out of nine maps having root-mean-square-error values between 0.052 and 0.074 cm3 cm−3, which is in accordance with the internationally accepted performance of hydraulic PTFs. The PTF-based mapping method performed significantly better than the RFK for the saturated water content at 30–60 and 60–90 cm soil depth; in the case of wilting point the RFK outperformed the PTFs at 60–90 cm depth. Differences between the PTF-based and RFK mapped values are less than 0.025 cm3 cm−3 for 65 %–86 % of the catchment. In RFK, the uncertainty of input environmental covariate layers is less influential on the mapped values, which is preferable. In the PTF-based method the uncertainty of mapping soil hydraulic properties is less computationally intensive. Detailed comparisons of maps derived from the PTF-based method and the RFK are presented in this paper.
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Honti, Mark, Chunni Gao, Vera Istvánovics et Adrienne Clement. « Lessons Learnt from the Long-Term Management of a Large (Re)constructed Wetland, the Kis-Balaton Protection System (Hungary) ». Water 12, no 3 (29 février 2020) : 659. http://dx.doi.org/10.3390/w12030659.

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Environmental management decisions should be made based on solid scientific evidence that relies on monitoring and modeling. In practice, changing economic, societal, and political boundary conditions often interfere with management during large, long, and complex projects. The result may be a sub-optimal development path that may finally diverge from the original intentions and be economically or technically ineffective. Nevertheless, unforeseen benefits may be created in the end. The Kis-Balaton wetland system is a typical illustration of such a case. Despite tremendous investments and huge efforts put in monitoring and modeling, the sequence of decisions during implementation can hardly be considered optimal. We use a catchment model and a basic water quality model to coherently review the impacts of management decisions during the 30-year history. Due to the complexity of the system, science mostly excelled in finding explanations for observed changes after the event instead of predicting the impacts of management measures a priori. In parallel, the political setting and sectoral authorities experienced rearrangements during system implementation. Despite being expensive as a water quality management investment originally targeting nutrient removal, the Kis-Balaton wetland system created a huge ecological asset, and thereby became worth the price.
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Prikler, Bence, Réka Svigruha, Judit Háhn, Péter Harkai, István Fodor, Edit Kaszab, Balázs Kriszt et al. « Spatial Variations in Microplastics in the Largest Shallow Lake of Central Europe and Its Protecting Wetland Area ». Water 16, no 7 (31 mars 2024) : 1014. http://dx.doi.org/10.3390/w16071014.

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The concentration of microplastics (MPs) in two important Hungarian freshwater habitats was determined in the size range of 50 μm–1 mm. Lake Balaton (LB) is the largest shallow lake in Central Europe, with a significant role in recreation and tourism. Its main inflow, the Zala River, enters the lake through an artificially constructed wetland, the Kis-Balaton Water Protection System and its catchment area (KB), which helps preserve the water quality of the lake. From these two areas, 15 samples were taken with an in situ filtration sampling method. After preparation, the samples were analyzed automatically by FT-IR microscopy. All samples, from both areas, contained MPs; the dominant microplastic (MP) shape was the fragment, while the most frequently polymer types were polyethylene, polypropylene and alkyd. Small MPs were dominant in both areas; around 90% of the MPs were smaller than 500 μm. On average, LB contained more MPs (21.0 ± 12.5 MPs/m3) compared to the KB, which presented an average concentration of MPs of 7.8 ± 5.9 MPs/m3. In the examined areas, two potential MP sources were determined, i.e., treated wastewater and road traffic. The importance of tourism should also be further investigated.
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MÓRA, ARNOLD, ILDIKÓ SZIVÁK, CSABA DEÁK, RÉKA BODA, ZOLTÁN CSABAI, PÉTER SÁLY, PÉTER TAKÁCS, TIBOR ERŐS et PÉTER BÍRÓ. « Environmental factors influencing the distribution of EPT assemblages in streams of Lake Balaton’s catchment area, Hungary ». Zoosymposia 5, no 1 (10 juin 2011) : 360–71. http://dx.doi.org/10.11646/zoosymposia.5.1.28.

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Lake Balaton is the largest shallow lake in Central Europe. A large part of its catchment area is a reputable and popular tourism area, where the quality of surface waters is in the center of public and scientific interest. The inflows of Lake Balaton are vulnerable, due to the strong human activity upstream. Despite their significance, the aquatic macroinvertebrate communities of these inflow streams are poorly known. In the summer of 2008, we investigated the distributional pattern of EPT (Ephemeroptera, Plecoptera, Trichoptera) assemblages, and their relationships with selected physico-chemical factors and landscape characteristics at different spatial scales. Samples were taken according to the AQEM sampling protocol at 20 stream sections with different environmental conditions. Multivariate analyses were used for evaluation. Altogether 8131 specimens (6225 Ephemeroptera, 133 Plecoptera, 1773 Trichoptera) belonging to 55 species (25 Ephemeroptera, 2 Plecoptera, 28 Trichoptera) were identified. Cloeon dipterum (L.) and Baetis spp. were the most common mayfly taxa, while caddisfly communities were dominated by limnephilids [Anabolia furcata Brauer, Potamophylax rotundipennis (Brauer)] and hydropsychids [Hydropsyche saxonica McLachlan, H. angustipennis (Curtis)]. The distribution of EPT assemblages was highly affected by pH, conductivity, dissolved oxygen, temperature and total dissolved solids. At reach scale, relationships were detected between spatial patterns of EPT assemblages and structure of riparian vegetation, type of sediment, and some hydromorphological characteristics (e.g., depth and width of stream bed, cover of aquatic vegetation, etc.). At medium and large scale, the ratio of natural and human-impacted areas proved to be the most influential factor.
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Kovács, Á., et A. Clement. « Impacts of the climate change on runoff and diffuse phosphorus load to Lake Balaton (Hungary) ». Water Science and Technology 59, no 3 (1 février 2009) : 417–23. http://dx.doi.org/10.2166/wst.2009.883.

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The paper outlines a multi-component assessment of the impacts of the climate change on runoff and total phosphorus loads to the large shallow Lake Balaton in Hungary. Present hydrological cycle of the lake catchment has been examined using the rainfall-runoff model WetSpa. Particular phosphorus concentration in runoff was estimated on the basis of the simulated streamflow using an empirical power equation. Dissolved phosphorus concentrations were determined as a function of landuse and soil type of the corresponding sub-catchment. The model was calibrated and validated against daily observations manually at monitoring sites of sixteen inflowing streams around the lake. Runoff stemming from shoreline urban developments was calculated by the urban runoff simulation model SWMM. Phosphorus concentrations in urban runoff were calculated by an empirical relationship derived from field measurements. The model was henceforward run for climate change scenario analysis. Present weather data were modified by the climate change scenarios imported from the results of the CLIME project. The results indicate that the impact of the climate change on runoff and phosphorus load appears in the change of the distribution within a time period rather than in the total volume. However, due to the high uncertainties in climate models, the presented calculations are possible assumptions rather than established statements.
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Budai, P., et A. Clement. « Estimation of nutrient load from urban diffuse sources : experiments with runoff sampling at pilot catchments of Lake Balaton, Hungary ». Water Science and Technology 56, no 1 (1 juillet 2007) : 295–302. http://dx.doi.org/10.2166/wst.2007.464.

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About a quarter of the total nutrient loading of Lake Balaton (Hungary) originates from urban diffuse sources, mostly from direct shoreline watersheds. This load cannot be measured directly. Sampling of urban runoff can help improving load estimations. The dynamic processes characterizing the accumulation and washoff of contaminants suggest that randomly observed concentrations are likely under- or overestimated. The results of two recent pilot programs aimed towards achieving continuous measurement of nutrient load carried by urban runoff are introduced. Stations were implemented in two pilot catchments located on the shore of Lake Balaton. Storm event runoff was sampled automatically and manually. Discharge, precipitation and rainfall intensities were also recorded. Results proved that the more a specific pollutant is associated with solid particles, the more of its load comes from a few but large storm events, nevertheless the cumulative effect of small rainfall events is not negligible, either. Event mean concentrations of solid-related pollutants were found to be dependent on rainfall intensity. The derived empirical relationships for SS, TP and TN event mean concentrations were indeed found to be applicable for reducing the uncertainty of load estimations of these pollutants significantly, as compared to using long-time average (i.e. annual mean) concentration values.
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Thèses sur le sujet "Balason catchment"

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Patel, Sheelwant. « Study of soil erosion problems in eastern Balason catchment ». Thesis, University of North Bengal, 1996. http://hdl.handle.net/123456789/840.

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Chapitres de livres sur le sujet "Balason catchment"

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Kertész, Ádám. « The Forests of Lake Balaton Catchment and Their Role in Soil Conservation ». Dans Management of Mountain Watersheds, 209–17. Dordrecht : Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-2476-1_17.

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