J. D. Gomez‐Velez
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View article: Ion Clusters Reveal the Sources, Impacts, and Drivers of Freshwater Salinization
Ion Clusters Reveal the Sources, Impacts, and Drivers of Freshwater Salinization Open
Population growth, land use change, climate change, and natural resource extraction are driving the salinization of freshwater resources worldwide. Reversing these trends will require data-centric approaches that identify salt sources, env…
View article: Toward a universal model of hyporheic exchange and nutrient cycling in streams
Toward a universal model of hyporheic exchange and nutrient cycling in streams Open
Transformation and removal of dissolved nutrients and pollutants in streams strongly depends on microbial processes in streambed sediments. The contact between these solutes and microbial communities is mediated by the physical transport f…
View article: The plastic underground – Exploring the mechanisms controlling the fate and transport of microplastics in the subsurface
The plastic underground – Exploring the mechanisms controlling the fate and transport of microplastics in the subsurface Open
While there have been advances in understanding the above ground plastic cycle, there is still a substantial lack of understanding the sources and activation mechanisms of plastic pollution affecting the entry, fate, transport, transformat…
View article: Evaluation of methane mitigation by organic feed additives in dual-flow continuous culture
Evaluation of methane mitigation by organic feed additives in dual-flow continuous culture Open
Sustainability is interwoven with consumer expectations of organic production systems, yet there are few nutritional options for organic dairy systems to approach methane (CH4) mitigation. The objective of the current study was to compare …
View article: Toward a Universal Model of Hyporheic Exchange and Nutrient Cycling in Streams
Toward a Universal Model of Hyporheic Exchange and Nutrient Cycling in Streams Open
In this paper we demonstrate that several ubiquitous hyporheic exchange mechanisms can be represented simply as a one‐dimensional diffusion process, where the diffusivity decays exponentially with depth into the streambed. Based on a meta‐…
View article: Wetting and drying trends in the land–atmosphere reservoir of large basins around the world
Wetting and drying trends in the land–atmosphere reservoir of large basins around the world Open
Global change is altering hydrologic regimes worldwide, including large basins that play a central role in the sustainability of human societies and ecosystems. The basin water budget is a fundamental framework for understanding these basi…
View article: The Fragility of Bedform‐Induced Hyporheic Zones: Exploring Impacts of Dynamic Groundwater Table Fluctuations
The Fragility of Bedform‐Induced Hyporheic Zones: Exploring Impacts of Dynamic Groundwater Table Fluctuations Open
Hyporheic zones are commonly regarded as resilient and enduring interfaces between groundwater and surface water in river corridors. In particular, bedform‐induced advective pumping hyporheic exchange (bedform‐induced exchange) is often pe…
View article: Sinuosity‐Driven Hyporheic Exchange: Hydrodynamics and Biogeochemical Potentials
Sinuosity‐Driven Hyporheic Exchange: Hydrodynamics and Biogeochemical Potentials Open
Hydrologic exchange processes are critical for ecosystem services along river corridors. Meandering contributes to this exchange by driving channel water, solutes, and energy through the surrounding alluvium, a process called sinuosity‐dri…
View article: Groundwater Circulation Within the Mountain Block: Combining Flow and Transport Models With Magnetotelluric Observations to Untangle Its Nested Nature
Groundwater Circulation Within the Mountain Block: Combining Flow and Transport Models With Magnetotelluric Observations to Untangle Its Nested Nature Open
Mountains are vital water sources for humans and ecosystems, continuously replenishing lowland aquifers through surface runoff and mountain recharge. Quantifying these fluxes and their relative importance is essential for sustainable water…
View article: Comment on hess-2023-172
Comment on hess-2023-172 Open
Abstract. Global change is altering hydrologic regimes worldwide, including large basins that play a central role in the sustainability of human societies and ecosystems. The basin water budget is a fundamental framework for understanding …
View article: The directional unit hydrograph model: Connecting streamflow response to storm dynamics
The directional unit hydrograph model: Connecting streamflow response to storm dynamics Open
Storm direction and storm velocity play a critical role in streamflow response; and despite evidence of ongoing changes in storm tracks around the world, there is no practical approach to efficiently assess and quantify the role of these s…
View article: Stream Water Age Reveals Hydrological and Human Drivers of Inland Freshwater Salinization
Stream Water Age Reveals Hydrological and Human Drivers of Inland Freshwater Salinization Open
The salinity of inland freshwaters is rising globally, particularly in human dominated landscapes that receive deicers in the winter. Here we show that the salinization of an urban stream in Northern Virginia (USA) can be linked to salt so…
View article: A Lattice-Boltzmann model for simulating bedform-induced hyporheic exchange
A Lattice-Boltzmann model for simulating bedform-induced hyporheic exchange Open
The Lattice-Boltzmann (LB) method is applied here for the first time to simulate bedform-induced hyporheic exchange flow in a reduced complexity model. The flexibility of the LB allows surface and hyporheic flows to be resolved together, i…
View article: Comment on hess-2023-172
Comment on hess-2023-172 Open
Abstract. Global change is altering hydrologic regimes worldwide, including large basins that play a central role in the sustainability of human societies and ecosystems. The basin water budget is a fundamental framework for understanding …
View article: Wetting and drying trends in the Land-Atmosphere Reservoir of large basins around the world
Wetting and drying trends in the Land-Atmosphere Reservoir of large basins around the world Open
Global change is altering hydrologic regimes worldwide, including large basins that play a central role in the sustainability of human societies and ecosystems. The basin water budget is a fundamental framework for understanding these basi…
View article: The Plastic Underground: Are Microplastics in the Subsurface a Ticking Time Bomb for Soil and Groundwater Ecosystems?
The Plastic Underground: Are Microplastics in the Subsurface a Ticking Time Bomb for Soil and Groundwater Ecosystems? Open
Increasing volumes of mismanaged plastic waste have resulted in millions of tons of plastics entering the environment. While recent research has made substantial progress in determining the fate and transport of microplastics (MP) in river…
View article: Model Inputs, Outputs, and Scripts associated with: “Spatial microbial respiration variations in the hyporheic zones within the Columbia River Basin”
Model Inputs, Outputs, and Scripts associated with: “Spatial microbial respiration variations in the hyporheic zones within the Columbia River Basin” Open
This data package is associated with the publication “Spatial microbial respiration variations in the hyporheic zones within the Columbia River Basin” published in the Journal of Geophysical Research: Biogeosciences (Son et al. 2022) avail…
View article: Model Inputs, Outputs, and Scripts associated with: “Combined effects of stream hydrology and land use on basin-scale hyporheic zone denitrification in the Columbia River Basin”
Model Inputs, Outputs, and Scripts associated with: “Combined effects of stream hydrology and land use on basin-scale hyporheic zone denitrification in the Columbia River Basin” Open
This data package is associated with the publication “Combined effects of stream hydrology and land use on basin‐scale hyporheic zone denitrification in the Columbia River Basin”, published in Water Resource Research (Son et al.2022) avail…
View article: Combined Effects of Stream Hydrology and Land Use on Basin‐Scale Hyporheic Zone Denitrification in the Columbia River Basin
Combined Effects of Stream Hydrology and Land Use on Basin‐Scale Hyporheic Zone Denitrification in the Columbia River Basin Open
Denitrification in the hyporheic zone (HZ) of river corridors is crucial to removing excess nitrogen in rivers from anthropogenic activities. However, previous modeling studies of the effectiveness of river corridors in removing excess nit…
View article: Combined effects of stream hydrology and land use on basin-scale hyporheic zone denitrification in the Columbia River Basin
Combined effects of stream hydrology and land use on basin-scale hyporheic zone denitrification in the Columbia River Basin Open
Denitrification in the hyporheic zone (HZ) of river corridors is crucial to removing excess nitrogen in rivers from anthropogenic activities. However, previous modeling studies of the effectiveness of river corridors in removing excess nit…
View article: Spatial Microbial Respiration Variations in the Hyporheic Zones Within the Columbia River Basin
Spatial Microbial Respiration Variations in the Hyporheic Zones Within the Columbia River Basin Open
While the hyporheic zone (HZ) accounts for a significant portion of whole stream CO 2 concentrations, HZ respiration modeling studies are lacking in quantifying their contributions to the total CO 2 at large watershed/basin scales. Quantif…
View article: Combined effects of stream hydrology and land use on basin-scale hyporheic zone denitrification in the Columbia River Basin
Combined effects of stream hydrology and land use on basin-scale hyporheic zone denitrification in the Columbia River Basin Open
This data includes inputs and outputs of a coupled carbon-nitrogen river corridor model (RCM) for the Columbia River Basin and sensitivity results with varying substrate concentrations, and random forest model results with key model inputs…
View article: Combined effects of stream hydrology and land use on basin-scale hyporheic zone denitrification in the Columbia River Basin
Combined effects of stream hydrology and land use on basin-scale hyporheic zone denitrification in the Columbia River Basin Open
This data includes inputs and outputs of a coupled carbon-nitrogen river corridor model (RCM) for the Columbia River Basin and sensitivity results with varying substrate concentrations, and random forest model results with key model inputs…
View article: The 100 Plastic Rivers Programme – A Participatory Approach to Analysing Global River Microplastic Pollution 
The 100 Plastic Rivers Programme – A Participatory Approach to Analysing Global River Microplastic Pollution  Open
<p>Increasing levels of mismanagement of plastic waste are causing concern about plastic pollution of freshwater ecosystems globally. In particular, the magnitude, sources, spatial distributions, and time scales of microplastic (part…
View article: Can Common Pool Resource Theory Catalyze Stakeholder-Driven Solutions to the Freshwater Salinization Syndrome?
Can Common Pool Resource Theory Catalyze Stakeholder-Driven Solutions to the Freshwater Salinization Syndrome? Open
Freshwater salinity is rising across many regions of the United States as well as globally, a phenomenon called the freshwater salinization syndrome (FSS). The FSS mobilizes organic carbon, nutrients, heavy metals, and other contaminants s…