Impact of Decreasing the Normal Damming Level of the Jeziorsko Reservoir on Low Flows in the Warta River

Kałuża, Tomasz; Sroka, Z.; Lewandowska, Joanna

doi:10.15576/asp.fc/2017.16.2.107

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…The WRC belongs to the most developed and productive agricultural regions of Poland, but at the same time with only about 127 mm of the average annual flow, it is one of the driest parts of the country, and also one of the poorest regions in Europe in terms of available water resources. This makes the WRC of particular interest to researchers aiming to recognize its hydro-climatologic [27][28][29][30][31][32][33][34][35][36][37][38][39] characteristics, and predict future runoff trends in that area in relation to the projected climate change [25,26]. However, while these analyses focus mostly on variations of flows recorded in separated gauging stations, there is lack of research on probabilistic relationships between them in terms of the synchronous and asynchronous occurrences of the annual and seasonal flow maxima in WRC.…”

Section: Discussionmentioning

confidence: 99%

Spatial Differentiation of the Maximum River Runoff Synchronicity in the Warta River Catchment, Poland

Perz

Sobkowiak

Wrzesiński

2020

Water

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Based on daily flows recorded in the period 1971–2010, the synchronous occurrence of the annual (AMAXq), winter (WMAXq), and summer (SMAXq) maximum specific runoffs in 39 sub-catchments of the Warta River catchment (WRC) in Poland was analyzed. First, trends in the flows were detected using the non-parametric Mann–Kendall (M-K) test. Then, the degree of the synchronous and asynchronous occurrences of the maximum specific runoffs (MAXq) in respective sub-catchments in relation to the Gorzów Wielkopolski gauge closing the WRC was calculated. Finally, the reasons for the detected spatial and temporal differences were discussed. The study revealed a noticeable variability of the analyzed parameters. The highest synchronicity of AMAXq and WMAXq in relation to the closing Gorzów Wielkopolski gauge was revealed in the man-made Kościański and Mosiński canals and in the sub-catchments of the Noteć, Wełna, and lower Prosna rivers. While compared to AMAXq and WMAXq, the summer maxima showed relatively lower degrees of synchronicity, an increase in the synchronous occurrence of SMAXq in the southern part of WRC, and a decrease in its central part were identified. It was concluded that the stronger synchronicity of WMAXq resulted from the nival regime of the investigated rivers. Consequently, the annual maxima were most often associated with the winter half-year. The detected differences of synchronicity of the annual and seasonal runoffs are conditioned by climate, more specifically by the course of winter and resulting from it snow cover thickness, and also the amount and intensity of rainfall in summer.

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Section: Discussionmentioning

confidence: 99%

Spatial Differentiation of the Maximum River Runoff Synchronicity in the Warta River Catchment, Poland

Perz

Sobkowiak

Wrzesiński

2020

Water

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Does the State of Scientific Knowledge and Legal Regulations Sufficiently Protect the Environment of River Valleys?

Konatowska,

Młynarczyk,

Maciejewska-Rutkowska

et al. 2024

Land

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The pressure of human activity in river valley environments has always been high. Even today, despite the increasing awareness of societies around the world regarding the need to protect water and biodiversity, there are concerns that the current river valley management systems are insufficient. Therefore, the aim of this study was to assess the state of knowledge about the soils and forest ecosystems of river valleys in terms of the possibility of protecting river valley environments. This study used data obtained from the Forest Data Bank (FDB) database, which focuses on forests in Poland. After analyzing 17,820 forest sections where the soils were described as fluvisols, it was found that forest areas associated with fluvisols (typical, fertile soils of river valleys) are quite well recognized and protected in Poland. Most (55%) forested fluvisols are located in Natura 2000 sites (an important European network of biodiversity hotspots), 4% in nature reserves, and 1% in national parks. Additionally, the main forest habitat type associated with fluvisols is riparian forest, composed mainly of Quercus, Ulmus, and Fraxinus, which is protected as Natura 2000 habitat type 91F0. Preserving the sustainability of the forest is also a form of soil protection. Despite the identification of soils and forests in river valleys, as well as appropriate legal tools, their protection may be ineffective due to the fragmentation of forms of protection and the lack of a coherent system for managing river valleys. Because the conservation status of the river valleys is also influenced by the management of areas located outside the river valleys, in order to protect river valley ecosystems, integrated conservation plans for entire catchments should be implemented. Due to potential conflicts related to the management of areas with diverse expectations of local communities, it would be advisable for such plans to be created by local experts but under the supervision of a specialist/specialists from outside the area covered by a given river basin.

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Impact of Decreasing the Normal Damming Level of the Jeziorsko Reservoir on Low Flows in the Warta River

Cited by 2 publications

References 3 publications

Spatial Differentiation of the Maximum River Runoff Synchronicity in the Warta River Catchment, Poland

Spatial Differentiation of the Maximum River Runoff Synchronicity in the Warta River Catchment, Poland

Does the State of Scientific Knowledge and Legal Regulations Sufficiently Protect the Environment of River Valleys?

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