Results 61 to 70 of about 5,645 (215)

Hyporheic exchange processes of pore-scale microplastics

Science of The Total Environment
The transport of microplastics in the hyporheic zone remains poorly understood with few studies attempting to quantify microplastic hyporheic exchange processes. A laboratory scale erosimeter was utilized in combination with fluorometric techniques to experimentally quantify the dispersion of 3D pore-scale microplastics across the hyporheic zone ...
Ben, Stride, Soroush, Abolfathi, Gary D, Bending, Jonathan, Pearson   +3 more
openaire   +2 more sources

Engineered Gravel Trench Hyporheic Exchange to Create Cold‐Water Thermal Refuges

River Research and Applications, EarlyView.
ABSTRACT Warming rivers are driving a loss or fragmentation of cold‐water habitat and providing the impetus to develop proactive thermal management approaches to maintain suitable habitat in rivers. One innovative approach is through the creation of cold‐water thermal refuges during periods of thermal stress for aquatic species.
Kathryn A. Smith, Edmund A. Halfyard, Christa Kelleher, Barret L. Kurylyk   +3 more
wiley   +1 more source

Regulation-Structured Dynamic Metabolic Model Provides a Potential Mechanism for Delayed Enzyme Response in Denitrification Process [PDF]

, 2017
In a recent study of denitrification dynamics in hyporheic zone sediments, we observed a significant time lag (up to several days) in enzymatic response to the changes in substrate concentration.
Chen, Xingyuan, Fredrickson, Jim K., Li, Minjing, Liu, Chongxuan, Scheibe, Timothy D., Song, Hyun-Seob, Song, Xuehang, Stegen, James C., Thomas, Dennis G., Zachara, John M.   +9 more
core   +4 more sources

Experimental and Numerical Investigation on the Impact of Emergent Vegetation on the Hyporheic Exchange

Water Resources Research
Hyporheic exchange leads to the transfer of gases, solutes, and fine particles across the sediment‐water interface, playing a critical role in biogeochemical cycles and pollutant transport in aquatic environments.
S. H. Huang, R. Nuli, P. K. Kang, L. Shen, J. Q. Yang   +4 more
doaj   +1 more source

Ecological Characteristics of Stream Reaches With and Without Low‐Tech Process‐Based Restoration in a Wildfire‐Affected Catchment

River Research and Applications, EarlyView.
ABSTRACT Low‐tech process‐based stream restoration (LTPBR) is increasingly implemented following wildfire, underscoring the need to evaluate restoration outcomes in burned catchments. To help address this need, we measured abiotic and biotic characteristics of a reach that received LTPBR, an untreated reach, and a reach with relict beaver activity that
Kimberly A. Nichter, Travis Gilmore, Cole Carbone, Ben Sellers, Matthew P. Fairchild, Daniel L. Preston   +5 more
wiley   +1 more source

Increasing Streambed Permeability Around Vertical Steps to Enhance Hyporheic Exchange

Water Resources Research
In‐stream structures can be used to promote hyporheic exchange, that is, the exchange of water and solutes between the stream and the underlying streambed.
M. Tajari, M. H. Omid, A. A. Dehghani, A. N. Ghameshlou, F. Boano   +4 more
doaj   +1 more source

A numerical tool to integrate biophysical diversity of a large regulated river: hydrobiogeochemical bases. The case of the Garonne River (France) [PDF]

, 2003
This article presents the bases of a hydrobiogeochemical model of the Garonne River (southwest France) which has been developed to integrate physical and biological processes during summer low-water periods. The physical part of this model is composed of
APHA, Bencala, Billen, Bonvallet Garay, Brion, Brown, Caussade, Cayrou, Daily, Edeline, Godillot, Hannon, Jorgensen, Kim, Landers, Lung, Masbernat, Morrice, Norris, Pickett, Rietjens, Roux, Salençon, Santoul, Sauvage, Simon, Smitz, Steiger, Steiger, Steiger, Teissier, Uehlinger, Vervier   +32 more
core   +1 more source

Strategies for Assessing Post‐Wildfire Geomorphic Resilience in Semiarid Rivers

River Research and Applications, EarlyView.
ABSTRACT We review and summarize diverse components of a catchment that can be monitored after wildfire to assess the geomorphic resilience of the river corridor in semiarid regions. We distinguish upland portions of river catchments from river corridors.
Ellen Wohl, Shayla Triantafillou, Alex Thornton‐Dunwoody, Connor Mertz, Katie Larkin, William Keenan, Steven Griffin, Dylan Davis, Lindsey Blehm   +8 more
wiley   +1 more source

The influence of in-stream structures on temperature dynamics via induced hyporheic exchange

Journal of Freshwater Ecology
In-stream restoration structures, such as woody weirs, are intended to enhance hyporheic exchange, thus altering temperature dynamics in restored reaches. However, the relative effects of various in-stream structure types and streambed settings (i.e. the
Jinghong Feng, Junxiong Luo, Ying Liu, Liu Defu, Linlin Li, Ziyan Lu, Xunchuan Song, Weiping Jiang   +7 more
doaj   +1 more source

Fragmentation of the Hyporheic Zone Due to Regional Groundwater Circulation

Water Resources Research, 2019
By use of numerical modeling and field observations, this work quantified the effects of catchment‐scale upwelling groundwater on the hyporheic (below stream) fluxes over a wide range of spatial scales.
B. B. Mojarrad, J. Riml, A. Wörman, H. Laudon   +3 more
doaj   +1 more source