A5075833561- Soil and Water Nutrient Dynamics
- Hydrology and Watershed Management Studies
- Climate change and permafrost
- Fish Ecology and Management Studies
- Hydrology and Sediment Transport Processes
- Cryospheric studies and observations
- Freshwater macroinvertebrate diversity and ecology
- Groundwater flow and contamination studies
- Arctic and Antarctic ice dynamics
- Wastewater Treatment and Nitrogen Removal
- Hydrological Forecasting Using AI
- Soil Moisture and Remote Sensing
- Peatlands and Wetlands Ecology
- Atmospheric and Environmental Gas Dynamics
- Water Quality Monitoring Technologies
- Plant Water Relations and Carbon Dynamics
- Environmental DNA in Biodiversity Studies
- Conservation, Biodiversity, and Resource Management
- Plant responses to elevated CO2
- Forest Management and Policy
- Landslides and related hazards
- Land Use and Ecosystem Services
- Geological Studies and Exploration
- Fire effects on ecosystems
- Groundwater and Isotope Geochemistry
University of Birmingham
2013-2024
Forest Research
2016-2024
Kelda Group (United Kingdom)
2019-2024
Royal Society for the Protection of Birds
2015-2016
Abstract Storm events can drive highly variable behavior in catchment nutrient and water fluxes, yet short‐term event dynamics are frequently missed by low‐resolution sampling regimes. In addition, source zone contributions vary significantly within between storm events. Our inability to identify characterize time‐dynamic severely hampers the adequate design of land use management practices order control exports from agricultural landscapes. Here we utilize an 8 month high‐frequency (hourly)...
Abstract Hyporheic zones increase freshwater ecosystem resilience to hydrological extremes and global environmental change. However, current conceptualizations of hyporheic exchange, residence time distributions, the associated biogeochemical cycling in streambed sediments do not always accurately explain complexity observed streams rivers. Specifically, existing conceptual models insufficiently represent coupled transport reactivity along groundwater surface water flow paths, role...
Abstract In 2017, the Birmingham Institute of Forest Research (BIFoR) began to conduct Free Air Carbon Dioxide Enrichment (FACE) within a mature broadleaf deciduous forest situated in United Kingdom. BIFoR FACE employs large‐scale infrastructure, form lattice towers, forming ‘arrays’ which encircle plot ~30 m diameter. consists three treatment arrays elevate local CO 2 concentrations (e[CO ]) by +150 µmol/mol. practice, acceptable operational enrichment (ambient [CO ] + e[CO is ±20% set...
Abstract Despite the high sensitivity of polar regions to climate change and strong influence temperature upon ecosystem processes, contemporary understanding water dynamics in Arctic river systems is limited. This research gap was addressed by exploring high‐resolution column thermal regimes for glacier‐fed non‐glacial rivers at eight sites across Svalbard during 2010 melt season. Mean temperatures (0.3–3.2 °C) were lowest least variable near glacier terminus but increased downstream...
Abstract Improved understanding of stream solute transport requires meaningful comparison processes across a wide range discharge conditions and spatial scales. At reach scales where tracer tests are commonly used to assess behavior, such is still confounded due the challenge separating dispersive transient storage from influence advective timescale that varies with length. To better resolve interpretation these field‐based observations, we conducted recurrent conservative along 1 km study...
Abstract Novel observation techniques (e.g., smart tracers) for characterizing coupled hydrological and biogeochemical processes are improving understanding of stream network transport transformation dynamics. In turn, these observations thought to enable increasingly sophisticated representations within transient storage models (TSMs). However, TSM parameter estimation is prone issues with insensitivity equifinality, which grow as parameters added model formulations. Currently, it unclear...
Abstract Stream metabolism is a fundamental, integrative indicator of aquatic ecosystem functioning. However, it not well understood how heterogeneity in physical channel form, particularly relation to and caused by in‐stream woody debris, regulates stream lowland streams. We combined conservative reactive tracers investigate relationships between patterns morphology hydrological transport ( form ) metabolic processes as characterized respiration function forested at baseflow. reach‐scale...
Enhancing the understanding of fate wastewater-derived organic micropollutants in rivers is crucial to improve risk assessment, regulatory decision making and river management. Hyporheic exchange sediment bacterial diversity are two factors gaining increasing importance as drivers for micropollutant degradation, but complex study field experiments usually ignored laboratory tests aimed estimate environmental half-lives. Flume mesocosms useful investigate degradation processes, bridging gap...
Abstract Stream temperature is a key variable that controls both physical and biogeochemical processes in aquatic ecosystems. Complex interactions between land surface subsurface make accurate simulations of stream dynamics at catchment scales challenging task. In this study we propose an integrated, catchment‐scale framework to model stream, soil, streambed, groundwater temperatures under the influence hydrologic vegetation mixed use central England. The phenology energy modules coupled...
Abstract. Although most field and modeling studies of river corridor exchange have been conducted at scales ranging from tens to hundreds meters, results these are used predict their ecological hydrological influences the scale networks. Further complicating prediction, exchanges expected vary with hydrologic forcing local geomorphic setting. While we desire predictive power, lack a complete spatiotemporal relationship relating discharge variation in geologic setting that is across basin....
Abstract The ecosystem services provided by forests modulate runoff generation processes, nutrient cycling and water energy exchange between soils, vegetation atmosphere. Increasing atmospheric CO 2 affects many linked aspects of forest catchment function in ways we do not adequately understand. Global levels will be around 40% higher 2050 than current levels, yet estimates how solute fluxes forested catchments respond to increased are highly uncertain. Free Air Enrichment (FACE) facility...
Summary The impacts of climate‐induced environmental changes on freshwater biodiversity are not well understood in A rctic regions. We quantified water source contributions (meltwater, ground water), habitat conditions and benthic macroinvertebrate community dynamics north‐west S valbard. aim was to use contemporary findings infer how future change may affect these river ecosystems. Water played an important role influencing conditions; meltwater flow were related significantly discharge,...
Abstract Arctic river basins are amongst the most vulnerable to climate change. However, there is currently limited knowledge of hydrological processes that govern flow dynamics in basins. We address this research gap using natural hydrochemical and isotopic tracers identify water sources contributed runoff spanning a gradient glacierization (0–61%) Svalbard during summer 2010 2011. Spatially distinct operating over diurnal, weekly seasonal timescales were characterized by hydrochemistry...
Abstract. A comprehensive set of measurements and calculated metrics describing physical, chemical, biological conditions in the river corridor is presented. These data were collected a catchment-wide, synoptic campaign H. J. Andrews Experimental Forest (Cascade Mountains, Oregon, USA) summer 2016 during low-discharge conditions. Extensive characterization 62 sites including surface water, hyporheic streambed sediment was conducted spanning 1st- through 5th-order reaches network. The...
Abstract The use of multitracer field fluorometry is increasing in the hydrological sciences. However, obtaining high‐quality fluorescence measurements challenging given variability environmental conditions within stream ecosystems. Here, we conducted a series tracer tests to examine degree which produces reliable estimates concentrations under realistic conditions. Using frequently applied examples conservative (Uranine) and reactive (Resazurin‐Resorufin) fluorescent tracers, show that situ...
ABSTRACT Despite the importance of river nutrient retention in regulating downstream water quality and potential alterations to fluxes associated with climate‐induced changes Arctic hydrology, current understanding cycling systems is limited. This study adopted an experimental approach quantify conceptual source contributions (meltwater, groundwater), environmental conditions uptake NO 3 − , NH 4 + PO 3− acetate at 12 headwater rivers Svalbard so determine role changing hydrology on these...
The uptake of aquatic nutrients can represent a major pathway for their removal from river ecosystems and is key control on nitrogen carbon export watersheds. Our understanding temporal variability in nutrient mass balance incomplete as conventional methods estimating rates are suited to low-frequency analysis. Here, we utilised hourly streamflow, nitrate ( <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Despite growing recognition that mineral sites restored for nature conservation can enhance local biodiversity, the wider societal benefits provided by this type of restoration relative to alternative options are not well understood. This study addresses research gap quantifying differences in ecosystem services provision under two common site after-uses: and agriculture. Using a combination site-specific primary field data, transfer modelling, we show our provides more diverse array than...
Time-variable discharge is known to control both transport and transformation of solutes in the river corridor. Still, few studies consider interactions together. Here, we how diurnal fluctuations an intermittent, headwater stream reach-scale solute as measured with conservative reactive tracers during a period no precipitation. One common conceptual model that extended contact times hyporheic zones low conditions allows for increased solutes. Instead, found tracer timescales within reach...
Urban streams receive increasing loads of organic micropollutants from treated wastewaters. A comprehensive understanding the in-stream fate is thus high interest for water quality management. Bedforms induce pumping effects considerably contributing to whole stream hyporheic exchange and are hotspots biogeochemical turnover processes. However, little known about transformation in such structures. In present study, we set up recirculating flumes examine a along single flowpaths two...