Effects of environmental changes and human impact on the functioning of mountain river channels, Carpathians, southern Poland

Krzemień, Kazimierz; Gorczyca, Elżbieta; Sobucki, Mateusz; Liro, Maciej; Łyp, M.

doi:10.1515/sggw-2015-0029

Cited by 6 publications

(4 citation statements)

References 2 publications

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“…The narrowing of the Hornád River channel due to low discharge between the years 1953 and 2002 was also observed in Hungary by Kiss and Blanka (2012). It is the flood events that indicate the dynamics of the water flow, as they have a decisive effect on their behaviour (Rusnák and Lehotský 2014, Krzemień et al 2015. Frasson et al (2019) find strong associations between channel width and water flow slope, meander wave-length, sinuosity, and discharge.…”

Section: Discussionmentioning

confidence: 84%

“…A more extensive form of anthropogenic impact within European region in relation to changing environmental conditions and the rise of more sophisticated mechanization and engi-neering approaches has been documented since the 20th century. Particular examples of human intervention (engineering structures, artificial meander cut-offs, channelization, gravel mining, dams and reservoirs creation) were well-marked in Hungary (Mecser et al 2008 andAmissah et al 2018), Italy (Surian and Rinaldi 2003), Poland (Wyzga 1993, Krzemień et al 2015, Hajdukiewicz et al 2017and Hajdukiewicz and Wyżga 2019, France (Liébault and Piégay 2002), Spain (de Jalón 1987), or in England (Petts 1987, Lambert 1988, Wood 1988 andLarge andPetts 1996). In Slovakia, documented human interventions in river systems refer to bank enforcement (Rusnák et al 2016 and, floodplain and in-channel gravel extraction (Radecki-Pawlik et al 2019), or river training impact (Kidová et al 2021).…”

Section: Introductionmentioning

confidence: 99%

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Anthropogenic and environmental impacts on the recent morphological degradation of the meandering Hornád River

Labas¹,

Kidová²

2022

geogrcas

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Anthropogenic and environmental impacts on the recent morphological degradation of the meandering Hornád RiverIn the 19th century, the Hornád River in Slovakia was an unmanaged river system with well-developed free meanders. However, there has been a significant reduction of these free meanders in the last 70 years. The aim of this paper was to evaluate the morphological response to human intervention and flood events on three types of river segments (natural, regulated and water-gap) of 72-km-long river reach of the meandering Hornád River in Slovakia over the last 197 years. Based on the dataset from the 2nd (1819 -1827) and 3rd military survey maps (1869 -1887), aerial photos (1949 and 1986) and orthophoto mosaics (2002, 2013 and 2016) the in-channel morphological, as well as the land cover changes, were identified. The four evolutionary periods of morphological response were identified: a pre-regulation period of 1819 -1948, and three regulation periods with mutual effect of flood discharges of 1949 -2001, 2002 -2012, and 2013 -2016. The Hornád River in the pre-regulation period was represented by a natural meandering river planform (45.8%) with a high occurrence of in-channel landforms, where the lateral bar area prevailed. The intensive anthropogenic impact in the second half of the 20th century mainly affected its planform evolution, and resulted in channel shortening and narrowing, river sinuosity index and erosion-accumulation processes decreasing and loss of free meanders. The long-term low flood magnitude series coupled with land-cover changes (increasing the built-up area and communications) during the intensive regulation period led to the simplification of river channel planform by stabilization of the erosionaccumulation processes. It caused simplification of river channel planform, mainly of the natural river segments (down to 26%). The low flood series was reversed by the flood events after the year 2004 (5 -50-year recurrence interval), which tend to increase of the river sinuosity, channel widening as well as the migration of free meanders.

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Section: Discussionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Anthropogenic and environmental impacts on the recent morphological degradation of the meandering Hornád River

Labas¹,

Kidová²

2022

geogrcas

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“…The more irregular pattern of extreme flow quantile anomalies and perturbations in several catchments can be partially explained by climatic changes and other factors that modified fluvial systems through channel regulations, removal of flood plains, intense in-channel gravel mining and bed degradation, urbanisation, and deforestation (Krzemień, Gorczyca, Sobucki, Liro, & Łyp, 2015;Kundzewicz et al 2014;Romanowicz et al;Soja, 2002;Wẏzga, Zawiejska, Radecki-Pawlik, & Hajdukiewicz, 2012). Socio-economic development and national park regulations caused substantial land use and land cover changes, for example, the ratio of arable to forested areas.…”

Section: Changes In Anomalies and Perturbationsmentioning

confidence: 99%

Temporal and spatial variability of extreme river flow quantiles in the Upper Vistula River basin, Poland

Rutkowska

Willems

Onyutha

et al. 2017

Hydrological Processes

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Temporal and spatial variability in extreme quantile anomalies of seasonal and annual maximum river flows was studied for 41 gauging stations at rivers in the Upper Vistula River basin, Poland. Using the quantile perturbation method, the temporal variability in anomalies was analysed. Interdecadal oscillating components were extracted from the series of anomalies using the Hilbert‐Huang transform method. Period length, part of variance of each component, and part of unexplained variance were assessed. Results show an oscillating pattern in the temporal occurrence of extreme flow quantiles with clusters of high values in the 1960–1970s and since the late 1990s and of low values in the 1980s and at the beginning of the 1990s. The anomalies show a high variability on the right bank of the Upper Vistula River basin during the summer season with the highest values in catchments located in the western and south‐western parts of the basin. River flow extreme quantiles were found to be associated with large‐scale climatic variables from the regions of the North Atlantic Ocean, Scandinavia, Eastern Europe, Asia, and, to a lesser extent, the Pacific Ocean. Similarities between temporal variability of river flows and climatic factors were revealed. Results of the study are important for flood frequency analysis because a long observation period is necessary to capture clusters of high and low river flows.

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“…Human activities, apart from natural factors, play an important role in channels changes especially in mountain areas [1], [2], [3]. Several factors that control channels morphology have been recognized.…”

Section: Introductionmentioning

confidence: 99%

Human Impact on the Functioning of River Channels in the Polish Carpathians

Kijowska-StrugaÅ‚a¹

2019

Proceedings 2019

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Human activities, apart from natural factors, play an important role in channels changes especially in mountain areas The main objective of the study was to assess the impact of human activities on the functioning of selected river channels in the Polish Western Carpathians in the last 50 years. The research showed a significant changes in the morphology of the river channels. There has been a general tendency to channel incision mainly due to floods, channel modification and land use/land cover changes (cultivated land abandonment and increase areas with forest and grassland). Channels incision was also observed below the dams. This was due to the reduced river load of bed and suspended sediment material, which was trapped in the reservoir, and the enhanced energy of the 'hungry water'. It was also found that the influence of reservoirs on the hydromorphological state of rivers below their location is diversified and not necessarily negative. In addition, suspended sediment load in small mountain stream in the period 1970-1999 decreased due to cultivated land abandonment. After that suspended sediment load increased as a result of the appearance of a new sediment sources associated with intensification of landslides and human activity, such as construction works. The results of this study can be used as a basis for to formulate policies and manage river systems in mountain areas.

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Effects of environmental changes and human impact on the functioning of mountain river channels, Carpathians, southern Poland

Cited by 6 publications

References 2 publications

Anthropogenic and environmental impacts on the recent morphological degradation of the meandering Hornád River

Anthropogenic and environmental impacts on the recent morphological degradation of the meandering Hornád River

Temporal and spatial variability of extreme river flow quantiles in the Upper Vistula River basin, Poland

Human Impact on the Functioning of River Channels in the Polish Carpathians

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