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Methane percentage content in pore gas (A) and methane ebullition from sediments (B) of dam reservoirs: Turawa (I), Sulejowski (II), Włocławski (III), Siemianówka (IV)
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Dam reservoirs contribute significantly to global gross methane emission which has been estimated at 104 ±7.2 Tg CH 4 per year. However, this value might be far from real since the contribution of small dam reservoirs has not been taken into consideration. This study was aimed at estimating the amount of methane emitted from selected lowland dam re...
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... ml m -2 d -1 , on average. In other studied reservoirs mean gas emission was calculated at 990 ml m -2 d -1 in Siemianowka and 1445 ml m -2 d -1 in Turawa. The largest spatial variation in the amount of gas emitted from the sediment and in methane percentage content was recorded in the Włocławski Reservoir, while the smallest in the Sulejowski (Fig. 1, Tab. 1). Percentage con- 1, Fig. ...
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... largest spatial variation in the amount of gas emitted from the sediment and in methane percentage content was recorded in the Włocławski Reservoir, while the smallest in the Sulejowski (Fig. 1, Tab. 1). Percentage con- 1, Fig. 1). ...
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... im- pact on sediments greatly accelerates and intensifies ebullition of methane from sediments in dam reservoirs [Keller andStallard 1994, Joyce andJewell 2003], hence probably the increased liberation of methane from sediments in the rheo- limnetic Włocławski Reservoir and in other reservoirs at stations located close to the main stream course (Fig. ...
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Citations
... Particularly large amounts of greenhouse gases are generated by hydroelectric power plants located in tropical regions (Fearnside, P.M. 2005). Studies have confirmed that this negative phenomenon also applies to the reservoirs of hydropower plants in temperate climatic zones (Trojanowska, A. et al. 2009;Scherer, L. and Pfister, S. 2016;Miller, B.L. et al. 2017). ...
This study considers the current state of hydropower in Poland and the legal and environmental conditions for its development. The research objective was to provide insights into the future of hydropower in Poland. An attempt was made to determine the direction of hydropower development in Poland by 2050, taking into account the requirements of the European Green Deal. The basic method used is logical argumentation, which is in turn based on a critical analysis of planning documents and scientific papers. Statistical data on the production and consumption of hydropower were also analysed. Currently, Poland’s potential for hydropower production is not being fully exploited. The main reasons for this are a lack of political support and socio-ecological issues associated with the need to take over inhabited areas or areas of high natural value. The analysis of the state of hydropower in Poland indicates that urgent intervention is required in many areas. This applies, especially, to issues of the control, modernisation and technical condition of hydropower plants and damming facilities. The potential for the development of hydropower in Poland is assessed to be very small. Environmental, socio-economic and legal conditions are unfavourable to the construction of new, large hydropower plants. The exception is pumped-storage power plants, which, acting as energy storage facilities, should in the future constitute an important element of the Polish energy system. The possibility of using defunct lignite mining pits for this purpose is indicated. It is shown that some of Poland’s former lignite mines are also conveniently located. The possible beneficial impact of building pumped-storage power plants into the water ecosystem of central Poland is emphasised.
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