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Volume XLI (41)

 

 

Bartłomiej Wyżga, Joanna Zawiejska 

Large wood storage in channelized and unmanaged sections of the Czarny Dunajec river, Polish Carpathians: implications for the restoration of mountain rivers

Wyżga B., Zawiejska J., 2010, Large wood storage in channelized and unmanaged sections of the Czarny Dunajec river, Polish Carpathians: implications for the restoration of mountain rivers, Folia Geographica ser. Geographica-Physica, vol. XLI (41): 5-34 .

Keywords: mountain river; large woody debris; wood storage; wood mobility; river restoration; Polish Carpathians

Summary: The amounts and distribution pattern of large wood stored in a 17 km long reach of the wide, mountain Czarny Dunajec River, southern Poland, were investigated following a 7-year flood to determine the potential of naturally recruited woody debris for restoration of mountain rivers affected by channelization and channel incision. The quantity of stored wood as well as the number and mean mass of wood accumulations were found to be directly related to the length of eroded, forested banks and river width, and inversely related to unit stream power at the flood peak. A regression line for the relationship with river width testifies to the existence of minimum channel width, below which no wood was typically retained in the river. Numerous wood accumulations of relatively high mass were retained in wide, multi-thread river sections. In these sections, wood was deposited in a variety of depositional sites, considerably contributing to the diversity of physical and biotic processes in the river. In contrast, very small number of wood accumulations of relatively low mass were retained in narrow, single-thread sections of regulated or bedrock channel. Here, wood was mainly deposited along the channel margins and has exerted little influence on the river functioning. The recognised pattern of wood storage indicates that in a mountain river wider than the height of trees growing on its banks, environmentally-significant quantities of large wood are deposited in wide, multi-thread sections already remaining in a relatively healthy environmental state but cannot be retained in narrow, channelized or incised river sections. This questions the utility of naturally recruited large wood for restoration of mountain rivers affected by channelization and channel incision. Successful restoration of such rivers would require the previous reduction of their transporting power or should be undertaken with the use of artificially placed wood structures.

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Juris Soms 

Reactivation of erosion processes in permanent gullies as a geomorphic response to extreme rainfall events

Soms J., 2010, Reactivation of erosion processes in permanent gullies as a geomorphic response to extreme rainfall events, Folia Geographica ser. Geographica-Physica, vol. XLI (41): 35-47.

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Joanna Pociask-Karteczka, Zenon Nieckarz 

Extreme flood events in the Dunajec river drainage basin (Carpathian Mts.)

Pociask-Karteczka J., Nieckarz Z., 2010, Extreme flood events in the Dunajec river drainage basin (Carpathian Mts.), Folia Geographica ser. Geographica-Physica, vol. XLI (41): 49-58.

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António José Dinis Ferreira, Joao Pedro Nunes, Joao L.M. Pedroso de Lima, Carla Sofia Santos Ferreira, Tanya Esteves, Manuel Nunes 

Urban flood risk and pollutant relocation as a result of global change. A catchment experimental approach in central Portugal

Ferreira A.J.D., Nunes J.P., Lima J.L.P.d., Ferreira C.S.S., Esteves T., Nunes M., 2010, Urban flood risk and pollutant relocation as a result of global change. A catchment experimental approach in central Portugal, Folia Geographica ser. Geographica-Physica, vol. XLI (41): 59-66.

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Miroslav Tesař, Miloslav Sír, Miroslav Krejča, Jaroslav Fisák & Jiří Polívka 

Soil water movement during extreme precipitation in the Sumava Mts. and the Krkonose Mts. in August 2002

Tesař M., Sír M., Krejča M., Polívka J.F.&.J., 2010, Soil water movement during extreme precipitation in the Sumava Mts. and the Krkonose Mts. in August 2002, Folia Geographica ser. Geographica-Physica, vol. XLI (41): 67-73.

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Jaroslav Fisak, Miroslav Tesař, Miloslav Sir 

Long-term monitoring of liquid water content of low clouds and fog in selected small mountainous catchments in the Czech Republic

Fisak J., Tesař M., Sir M., 2010, Long-term monitoring of liquid water content of low clouds and fog in selected small mountainous catchments in the Czech Republic, Folia Geographica ser. Geographica-Physica, vol. XLI (41): 75-83.

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Joanna Fac-Beneda 

Estimation of total river runoff from small catchments in Northern Poland

Fac-Beneda J., 2010, Estimation of total river runoff from small catchments in Northern Poland, Folia Geographica ser. Geographica-Physica, vol. XLI (41): 85-92.

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Martina Kimlová, Simon Bercha, Libuše Bubeníčková, Pavla Řičicová, Jan Jirák 

Snowmelt in experimental basins in the Jizerské Hory Mountains during periods without precipitation

Kimlová M., Bercha S., Bubeníčková L., Řičicová P., Jirák J., 2010, Snowmelt in experimental basins in the Jizerské Hory Mountains during periods without precipitation, Folia Geographica ser. Geographica-Physica, vol. XLI (41): 93-101.

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Josef Buchtele, Miroslav Tesař 

Simulation of a rainfall - runoff process for the evaluation of variability in the river flow regime in small basins with vegetation changes

Buchtele J., Tesař M., 2010, Simulation of a rainfall - runoff process for the evaluation of variability in the river flow regime in small basins with vegetation changes, Folia Geographica ser. Geographica-Physica, vol. XLI (41): 103-110.

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