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Benthic biolayer structure controls whole-stream reactive transport

Autor: K. R. Roche, Marco Dentz

Hyporheic zone reaction rates are highest just below the sediment-water interface, in a shallow region called the benthic biolayer. Vertical variability of hyporheic reaction rates leads to unexpec...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c456174c8c4187d4a94778c75308c475
https://doi.org/10.1002/essoar.10507624.1

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Riverine macrophytes control seasonal nutrient uptake via both physical and biological pathways

Autor: Tenna Riis, Diogo Bolster, Annette Baattrup-Pedersen, Anette Baisner Alnoee, K. R. Roche, Antoine Aubenau, Alexander J. Reisinger, Peter S. Levi, Jennifer L. Tank

Publikováno v: Riis, T, Tank, J L, Reisinger, A J, Aubenau, A, Roche, K R, Levi, P S, Baattrup-Pedersen, A, Alnoee, A B & Bolster, D 2020, ' Riverine macrophytes control seasonal nutrient uptake via both physical and biological pathways ', Freshwater Biology, vol. 65, no. 2, pp. 178-192 . https://doi.org/10.1111/fwb.13412
Riis, T, Tank, J L, Reisinger, A J, Aubenau, A, Roche, K, Levi, P S, Baattrup-Pedersen, A, Alnøe, A B & Bolster, D 2019, ' Riverine macrophytes control seasonal nutrient uptake via both physical and biological pathways ', Freshwater Biology . https://doi.org/10.1111/fwb.13412

In low-gradient, macrophyte-rich rivers, we expect that the significant change in macrophyte biomass among seasons will strongly influence both biological activity and hydraulic conditions resulting in significant effects on nutrient dynamics. Unders

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94b53061e56503c7e6d33e40a5690671
https://doi.org/10.1111/fwb.13412

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Effects of Turbulent Hyporheic Mixing on Reach‐Scale Transport

Autor: Angang Li, Diogo Bolster, Gregory J. Wagner, Aaron I. Packman, K. R. Roche

Publikováno v: Water Resources Research. 55:3780-3795

Turbulence causes rapid mixing of solutes and fine particles between open channel flow and coarse-grained streambeds. Turbulent mixing is known to control hyporheic exchange fluxes and the distribution of vertical mixing rates in the streambed, but i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b162f097cc569a80d9d0f48c45fda492
https://doi.org/10.1029/2018wr023421

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A Dual Domain stochastic lagrangian model for predicting transport in open channels with hyporheic exchange

Autor: Diogo Bolster, K. R. Roche, Thomas Sherman, David Richter, Aaron I. Packman

Publikováno v: Advances in Water Resources. 125:57-67

The exchange of surface and subsurface waters plays an important role in understanding and predicting large scale transport processes in streams and rivers. Accurately capturing the influence of small-scale features associated with turbulent dispersi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d75372eb1c70cb352e18d0385f657fbb
https://doi.org/10.1016/j.advwatres.2019.01.007

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Large eddy simulation of turbulent flow over and through a rough permeable bed

Autor: Gregory J. Wagner, Yanping Lian, J. Dallmann, Wing Kam Liu, K. R. Roche, Aaron I. Packman, B. Sonin

Publikováno v: Computers & Fluids. 180:128-138

This work elucidates the impacts of model construction choices on turbulence characteristics and solution fidelity in the simulation of coupled freestream and porous turbulent flows. A freestream-porewater interface is modeled numerically as a matrix

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a5d650d84a879868dfd08d9b66c9fd3a
https://doi.org/10.1016/j.compfluid.2018.12.015

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Transport of food- and catalytic-grade titanium dioxide nanoparticles in controlled field streams with varying streambed and biofilm conditions

Autor: John Sticha, Junyeol Kim, Diogo Bolster, K. R. Roche, Arial J. Shogren, Kyle Doudrick

Publikováno v: Environmental Science: Nano. 6:3454-3466

With the increased use of nanoparticles (NPs) in consumer, food, and pharmaceutical products, their eventual release into streams is inevitable. Critical factors affecting the transport of NPs in streams are the hyporheic exchange between the water c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d33f03d8b31ecd77a18d533993258aab
https://doi.org/10.1039/c9en01007f

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Vertical Structure and Scaling of Turbulent Mixing in the Benthic Biolayer of Stream and Coastal Sediments

Autor: Marco Ghisalberti, Stanley B. Grant, J. W. Harvey, K. R. Roche, Ian Guymer, Fulvio Boano, Jesus D. Gomez-Velez

In this paper we develop and test a rigorous modeling framework, based on Duhamel’s Theorem, for the unsteady one-dimensional transport and mixing of a solute across a flat sediment-water interface...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::52ccf73d0e4970e8dd21b7fe7f5c7a1a
https://doi.org/10.1002/essoar.10501298.2

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A Novel Modeling Framework to Represent Turbulent Mixing in the Benthic Biolayer of Streams

Autor: Jesus D. Gomez-Velez, Ian Guymer, Fulvio Boano, Stanley B. Grant, Judson W. Harvey, K. R. Roche, Marco Ghisalberti

Many of the most important ecosystem services performed by streams occur in the benthic biolayer, the biologically active upper layer of the streambed. Here we develop and test a rigorous modeling framework for the unsteady one-dimensional transport

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dc718e5ab09ab45a1794d71cb751d06a
https://doi.org/10.5194/egusphere-egu2020-12183

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