The macroinvertebrate fauna of the Młynne stream (Polish Carpathians) in the aspect of the bed load transport and water quality

Abstract The macroinvertebrate fauna of the Młynne stream (Polish Carpathians) in the aspect of the bed load transport and water quality. The qualitative composition of the bottom sediments and the bed load and suspended load transport along the mountain stream were presented. The studies were carried on the Młynne stream in Gorce (Polish Carpathians). The streams flows partially in the natural river-bed and partially in the regulated with rapids. The stream bed load is accumulated in the reservoir up to the check dam and is qualitatively different from the load deposited at the bars. The taxonomic richness of the Młynne stream is a little bigger compared with the other investigated mountain and sub-mountain streams, but lesser compared with bigger rivers. The number of taxa on the natural reaches is more than double than on the regulated ones, with more taxa of high environmental demands and high values of the BMWP-PL index. The paper brings up the question of the environmental friendly technical solutions in different human activities in the sub-mountain and mountain river valleys, advantageous for humans and the river biological diversity (or resistance for negative environmental factors) as well.

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Coarse particle motion and resting times during bedload in a glacier-fed mountain stream of the central Chilean Andes

10.5194/egusphere-egu2020-12295 ◽

2020 ◽

Author(s):

Luca Mao ◽

Ricardo Carrillo ◽

Francesco Brardinoni ◽

Matteo Toro ◽

Luigi Fraccarollo

Keyword(s):

Average Length ◽

Mountain Streams ◽

Mountain Stream ◽

Bed Load ◽

Pit Tags ◽

Flow Energy ◽

Load Transport ◽

Bed Load Transport ◽

Channel Slope ◽

Chilean Andes

<p>Coarse bed load transport is a crucial process in river morphodynamics, but it is difficult to monitor in mountain streams. Predicting bed load is a difficult task especially in steep step-pool streams, where the critical dimensionless shear stress is affected by local channel slope and relative submergence, and only part of the flow energy is available to entrain and transport sediments as some is dissipated in local hydraulic plunging and jumps. Here we present a new sediment transport dataset obtained from two years of field-based monitoring (2014-2015) at the Estero Morales, a high-gradient stream in the central Chilean Andes. This stream features step-pool bed geometry and a glacier-fed hydrologic regime characterized by abrupt daily fluctuations in discharge. Bed load was monitored directly using Bunte samplers and by surveying the mobility of passive integrated transponder (PIT) tags. We used the competence method to quantify the effective slope, which is the fraction of the total slope responsible for bed load transport. This accounts for only 10% of the total slope, confirming that most of the energy is dissipated on macroroughness that characterize step-pool stream. We used the displacement lengths of PIT tags to derive the statistics of flight and resting times, observing that the average length of a flight scales inversely with grain size.</p>

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VARIABILITY OF SEDIMENT TRANSPORT IN THE SCOTT RIVER CATCHMENT (SVALBARD) DURING THE HYDROLOGICALLY ACTIVE SEASON OF 2009

Quaestiones Geographicae ◽

10.2478/quageo-2014-0011 ◽

2014 ◽

Vol 33 (1) ◽

pp. 39-49 ◽

Cited By ~ 8

Author(s):

Waldemar Kociuba ◽

Grzegorz Janicki ◽

Krzysztof Siwek

Keyword(s):

Bedload Transport ◽

Bed Load ◽

River Catchment ◽

Active Season ◽

Fluvial Transport ◽

River Bed ◽

Load Transport ◽

Bed Load Transport ◽

Glacial River ◽

Local Intensity

Abstract Investigations of fluvial transport in the glacial river catchment (Scott River, Spitsbergen) were conducted in the melt season of 2009. A special attention was given to dynamics and distribution of bedload transport − the major component of fluvial transport in a proglacial gravel-bed river. Bed-load transport rate was determined using the River Bedload Traps (RBT) constructed for the project’s need. The obtained results indicate high diversity of bedload transport, the amount of which reached up to 220 kg m-1 day-1 for twenty-four hours in particular measurement sites. The results confirmed also great variability of local intensity fluvial processes in polar zone.

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Controls Over Particle Motion and Resting Times of Coarse Bed Load Transport in a Glacier‐Fed Mountain Stream

Journal of Geophysical Research Earth Surface ◽

10.1029/2019jf005253 ◽

2020 ◽

Vol 125 (4) ◽

Author(s):

Luca Mao ◽

Matteo Toro ◽

Ricardo Carrillo ◽

Francesco Brardinoni ◽

Luigi Fraccarollo

Keyword(s):

Particle Motion ◽

Mountain Stream ◽

Bed Load ◽

Load Transport ◽

Bed Load Transport

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Bed-Load Transport in Two Different-Sized Mountain Catchments: Mlynne and Lososina Streams, Polish Carpathians

Water ◽

10.3390/w11020272 ◽

2019 ◽

Vol 11 (2) ◽

pp. 272 ◽

Cited By ~ 4

Author(s):

Artur Radecki-Pawlik ◽

Piotr Kuboń ◽

Bartosz Radecki-Pawlik ◽

Karol Plesiński

Keyword(s):

Fundamental Problem ◽

Water Reservoir ◽

River Channel ◽

Bed Load ◽

Check Dam ◽

Artificial Lake ◽

River Bank ◽

Load Transport ◽

Polish Carpathians ◽

Bed Load Transport

The prediction and calculation of the volume of gravel and/or sand transported down streams and rivers—called bed-load transport is one of the most difficult things for river engineers and designers because, in addition to field measurements, personnel involved in such activities need to be highly experienced. Bed-load transport treated by many engineers marginally or omitted and often receives only minor consideration from engineers or may be entirely disregarded simply because they do not know how to address the issue—in many cases, this is a fundamental problem in river management tasks such as: flood protection works; river bank protection works against erosion; building bridges and culverts; building water reservoirs and dams; checking dams and any other hydraulic structures. Thus, to share our experience in our paper, bed-load transport was calculated in two river/stream mountain catchments, which are different in terms of the characteristics of the catchment area and the level of river engineering works performed along the stream channel—both are tributaries of the Dunajec River and have similar Carpathian flysh geology. The studies were performed in the Mlyne stream and in the Lososina River in Polish Carpathians. Mlynne is one of the streams in the Gorce Mountains—it is prone to flash flooding events and has caused many problems with floods in the past. It flows partially in the natural river channel and partially in a trained river channel lined with concrete revetments. The stream bed load is accumulated in the reservoir upstream of the check dam. The Lososina River is one of the Polish Carpathian mountainous streams which crosses the south of the Beskid Wyspowy Mountains. It mostly has a gravel bed and it is flashy and experiences frequent flooding spring. At the mouth of the Lososina River, there is one of the largest Polish Carpathian artificial lakes—the Czchow lake. The Lososina mostly transports gravel as the bed load to the Czchow water reservoir where the sediment is deposited. In the early seventies, the Lososina was partly canalised, especially in places where passes inhabited areas. The paper compares the situation of bed-load transport in the Lososina River before and after engineering training works showing how much sediment is transported downstream along the river channel to the Czchow artificial lake. Also compared is the Mlynne bed load transport upstream and downstream from the check dam showing how much sediment might be transported and deposited in the reservoir upstream from the check dam and when one could expect this reservoir to be clogged.

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Bed load transport under different streambed conditions – a field experimental study in a mountain stream

International Journal of Sediment Research ◽

10.1016/s1001-6279(13)60002-5 ◽

2012 ◽

Vol 27 (4) ◽

pp. 426-438 ◽

Cited By ~ 7

Author(s):

Guo-an YU ◽

Zhao-yin WANG ◽

He Qing HUANG ◽

Huai-xiang LIU ◽

Brendon BLUE ◽

...

Keyword(s):

Experimental Study ◽

Mountain Stream ◽

Bed Load ◽

Load Transport ◽

Bed Load Transport

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Observations of Bed Load Transport and Channel Bed Changes in a Proglacial Mountain Stream

Arctic and Alpine Research ◽

10.2307/1551657 ◽

1992 ◽

Vol 24 (3) ◽

pp. 195 ◽

Cited By ~ 74

Author(s):

Jeff Warburton

Keyword(s):

Mountain Stream ◽

Bed Load ◽

Load Transport ◽

Bed Load Transport ◽

Bed Changes

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Two-Dimensional Numerical Simulation Study on Bed-load Transport in Fluctuating Backwater Area: A Case-Study Reservoir in China

10.20944/preprints201808.0398.v1 ◽

2018 ◽

Author(s):

Ming Luo ◽

Heli Yu ◽

Er Huang ◽

Rui Ding ◽

Xin Lu

Keyword(s):

Sediment Transport ◽

Transport Model ◽

Longitudinal Section ◽

Bed Load ◽

Two Dimensional ◽

River Bed ◽

Reservoir Drawdown ◽

Load Transport ◽

Bed Load Transport ◽

Volume Method

Numerical modeling of sedimentation and erosion in reservoirs is an active field of reservoir research. However, simulation of bed-load transport phenomena has rarely been applied to other water bodies, in particular, the fluctuating backwater area. This is because the complex morphological processes between hydrodynamics and sediment transport are generally challenging to accurately predict. In this study, the refinement and application of a two-dimensional shallow-water and bed-load transport model to the fluctuating backwater area is described. The model employs the finite volume method of the Godunov scheme and saturated sediment transport equations. The model was verified against experimental data of a scaled physical model. It was then applied to actual reservoir operation, including reservoir storage, reservoir drawdown and continuous flood process, to predict the morphology of reservoir sedimentation and sediment transport rates and bed level changes in the fluctuating backwater area. It was found that the location and morphology of sedimentation effected by the downstream water level results in random evolution of the river bed, and bed-load sedimentation is transported from upstream to downstream with the slope of the longitudinal section of the river bed generally reduced. Moreover, the sediment is mainly deposited in the main channel and the elevation difference between the riverbank and channel decreases gradually.

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