All Outputs (184)

Riverine concentrations and export of dissolved silicon, and potential controls on nutrient stoichiometry, across the land–ocean continuum in Great Britain (2024)
Journal Article
Tye, A. M., Jarvie, H. P., Spears, B. M., Dise, N. B., Williamson, J. L., Lapworth, D. J., Monteith, D., Sanders, R., Mayor, D. J., Bowes, M. J., Bowes, M., Burden, A., Callaghan, N., Farr, G., Felgate, S., Gibb, S., Gilbert, P., Hargreaves, G., Humphrey, O. S., Keenan, P., …Evans, C. D. (2024). Riverine concentrations and export of dissolved silicon, and potential controls on nutrient stoichiometry, across the land–ocean continuum in Great Britain. Journal of Hydrology, 640, Article 131738. https://doi.org/10.1016/j.jhydrol.2024.131738

Silicon (Si) is an essential nutrient element in freshwater and marine ecosystems, and its abundance relative to macro-nutrients (N, P) can impact phytoplankton communities in eutrophic rivers and estuaries. This study is the first national assessmen... Read More about Riverine concentrations and export of dissolved silicon, and potential controls on nutrient stoichiometry, across the land–ocean continuum in Great Britain.

Aged carbon mineralisation from headwater peatland floodplains in the Peak District, UK (2024)
Journal Article
Alderson, D. M., Evans, M. G., Garnett, M. H., & Worrall, F. (2024). Aged carbon mineralisation from headwater peatland floodplains in the Peak District, UK. Geomorphology, 461, Article 109271. https://doi.org/10.1016/j.geomorph.2024.109271

Floodplains are dynamic ecosystems that cycle carbon, which is both delivered from upstream catchment sources and produced in-situ. These systems are being increasingly recognised as key environments of carbon processing, with the capacity for substa... Read More about Aged carbon mineralisation from headwater peatland floodplains in the Peak District, UK.

Equipping for risk: Lessons learnt from the UK shale-gas experience on assessing environmental risks for the future geoenergy use of the deep subsurface. (2024)
Journal Article
Smedley, P. L., Allen, G., Baptie, B. J., Fraser-Harris, A. P., Ward, R. S., Chambers, R. M., …Worrall, F. (2024). Equipping for risk: Lessons learnt from the UK shale-gas experience on assessing environmental risks for the future geoenergy use of the deep subsurface. Science of the Total Environment, 921, Article 171036. https://doi.org/10.1016/j.scitotenv.2024.171036

findings are presented from an investigation to improve understanding of the environmental risks associated with developing an unconventional-hydrocarbons industry in the UK. The EQUIPT4RISK project, funded by UK Research Councils, focused on investi... Read More about Equipping for risk: Lessons learnt from the UK shale-gas experience on assessing environmental risks for the future geoenergy use of the deep subsurface..

Comparison of the transformation of organic matter flux through a raised bog and a blanket bog (2023)
Journal Article
Glatzel, S., Worrall, F., Boothroyd, I. M., & Heckman, K. (2024). Comparison of the transformation of organic matter flux through a raised bog and a blanket bog. Biogeochemistry, 167(4), 443-459. https://doi.org/10.1007/s10533-023-01093-0

This study has proposed that organic matter transfer and transformation into and through a peatland is dominated by preferential loss of carbohydrates and the retention of lignin-like molecules. Here we used elemental analysis and thermogravimetric a... Read More about Comparison of the transformation of organic matter flux through a raised bog and a blanket bog.

Chemical Oxygen Demand as a Measure of Fluvial Organic Matter Oxidation State (2023)
Journal Article
Worrall, F., Clay, G. D., Howden, N. J. K., & Burt, T. P. (2023). Chemical Oxygen Demand as a Measure of Fluvial Organic Matter Oxidation State. Journal of Geophysical Research: Biogeosciences, 128(10), Article e2022JG007248. https://doi.org/10.1029/2022jg007248

The oxidative ratio (OR) of the terrestrial biosphere is directly related to the size of the terrestrial biosphere carbon sink. In turn, OR of naturally occurring organic matter can be directly related to the oxidation state of the carbon in naturall... Read More about Chemical Oxygen Demand as a Measure of Fluvial Organic Matter Oxidation State.

Dissolved inorganic carbon export from rivers of Great Britain: Spatial distribution and potential catchment-scale controls (2022)
Journal Article
Tye, A. M., Williamson, J. L., Jarvie, H. P., Dise, N. B., Lapworth, D. J., Monteith, D., …Evans, C. D. (2022). Dissolved inorganic carbon export from rivers of Great Britain: Spatial distribution and potential catchment-scale controls. Journal of Hydrology, 615(Part A), Article 128677. https://doi.org/10.1016/j.jhydrol.2022.128677

Dissolved inorganic carbon (DIC) fluxes from the land to ocean have been quantified for many rivers globally. However, CO2 fluxes to the atmosphere from inland waters are quantitatively significant components of the global carbon cycle that are curre... Read More about Dissolved inorganic carbon export from rivers of Great Britain: Spatial distribution and potential catchment-scale controls.

River water temperature demonstrates resistance to long‐term air temperature change (2022)
Journal Article
Worrall, F., Howden, N. J., Burt, T. P., & Hannah, D. M. (2022). River water temperature demonstrates resistance to long‐term air temperature change. Hydrological Processes, 36(11), https://doi.org/10.1002/hyp.14732

Ecosystem health and water quality of rivers are dependent on their temperature. With ongoing human-induced climate change causing increases in air temperature across the globe, it is anticipated the stream temperatures will rise too—in turn increasi... Read More about River water temperature demonstrates resistance to long‐term air temperature change.

Spatial and Temporal Patterns in Atmospheric Deposition of Dissolved Organic Carbon (2022)
Journal Article
Liptzin, D., Boy, J., Campbell, J. L., Clarke, N., Laclau, J., Godoy, R., …McDowell, W. H. (2022). Spatial and Temporal Patterns in Atmospheric Deposition of Dissolved Organic Carbon. Global Biogeochemical Cycles, 36(10), https://doi.org/10.1029/2022gb007393

Atmospheric deposition of dissolved organic carbon (DOC) to terrestrial ecosystems is a small, but rarely studied component of the global carbon (C) cycle. Emissions of volatile organic compounds (VOC) and organic particulates are the sources of atmo... Read More about Spatial and Temporal Patterns in Atmospheric Deposition of Dissolved Organic Carbon.

Slopes: solute processes and landforms (2022)
Journal Article
Burt, T., Pinay, G., Worrall, F., & Howden, N. (2022). Slopes: solute processes and landforms. Memoirs, 58(1), 191-204. https://doi.org/10.1144/m58-2021-5

This chapter reviews research on solutes by fluvial geomorphologists in the period 1965–2000; growing links with biogeochemical research are emphasized later in the chapter. Brief reference is necessarily made to some research from before and after t... Read More about Slopes: solute processes and landforms.

Constraining the Carbon Budget of Peat Ecosystems: Application of Stoichiometry and Enthalpy Balances (2022)
Journal Article
Worrall, F., Boothroyd, I. M., Clay, G. D., Moody, C. S., Heckman, K., Burt, T. P., & Rose, R. (2022). Constraining the Carbon Budget of Peat Ecosystems: Application of Stoichiometry and Enthalpy Balances. Journal of Geophysical Research: Biogeosciences, 127(10), https://doi.org/10.1029/2022jg007003

We consider how the stoichiometry and energy content of organic matter reservoirs and fluxes through and from a peatland enable the fluxes and storage of carbon within a peatland to be constrained. We include the elemental composition of the above- a... Read More about Constraining the Carbon Budget of Peat Ecosystems: Application of Stoichiometry and Enthalpy Balances.

Is water quality in British rivers “better than at any time since the end of the Industrial Revolution”? (2022)
Journal Article
Whelan, M., Linstead, C., Worrall, F., Ormerod, S., Durance, I., Johnson, A., …Tickner, D. (2022). Is water quality in British rivers “better than at any time since the end of the Industrial Revolution”?. Science of the Total Environment, 843, Article 157014. https://doi.org/10.1016/j.scitotenv.2022.157014

We explore the oft-repeated claim that river water quality in Great Britain is “better now than at any time since the Industrial Revolution”. We review available data and ancillary evidence for seven different categories of water pollutants: (i) bioc... Read More about Is water quality in British rivers “better than at any time since the end of the Industrial Revolution”?.

Carbon Loss Pathways in Degraded Peatlands: New Insights From Radiocarbon Measurements of Peatland Waters (2022)
Journal Article
Evans, M. G., Alderson, D. M., Evans, C. D., Stimson, A., Allott, T. E., Goulsbra, C., …Rowson, J. (2022). Carbon Loss Pathways in Degraded Peatlands: New Insights From Radiocarbon Measurements of Peatland Waters. Journal of Geophysical Research: Biogeosciences, 127(7), https://doi.org/10.1029/2021jg006344

Peatland carbon stores are under widespread anthropogenic pressure, resulting in degradation and carbon loss. This paper presents DO14C (Dissolved Organic Carbon) dates from waters draining two eroded blanket peatland catchments in the UK. Both catch... Read More about Carbon Loss Pathways in Degraded Peatlands: New Insights From Radiocarbon Measurements of Peatland Waters.

Dynamic baselines for the detection of water quality impacts – the case of shale gas development (2021)
Journal Article
Worrall, F., Davies, R. J., & Hart, A. (2021). Dynamic baselines for the detection of water quality impacts – the case of shale gas development. Environmental Science: Processes & Impacts, 23(8), 1116-1129. https://doi.org/10.1039/d0em00440e

There is a need for the development of effective baselines against which the water quality impacts of new developments can be assessed. The specific conductance of flowback water from shale gas operations is typically many times the specific conducta... Read More about Dynamic baselines for the detection of water quality impacts – the case of shale gas development.

The need to integrate legacy nitrogen storage dynamics and time lags into policy and practice (2021)
Journal Article
Ascott, M. J., Gooddy, D. C., Fenton, O., Vero, S., Ward, R. S., Basu, N. B., …Surridge, B. W. (2021). The need to integrate legacy nitrogen storage dynamics and time lags into policy and practice. Science of the Total Environment, 781, https://doi.org/10.1016/j.scitotenv.2021.146698

Increased fluxes of reactive nitrogen (Nr), often associated with N fertilizer use in agriculture, have resulted in negative environmental consequences, including eutrophication, which cost billions of dollars per year globally. To address this, best... Read More about The need to integrate legacy nitrogen storage dynamics and time lags into policy and practice.

A 50‐Year Record Of Nitrate Concentrations In The Slapton Ley Catchment, Devon, United Kingdom (2021)
Journal Article
Burt, T., Worrall, F., Howden, N., Jarvie, H., Pratt, A., & Hutchinson, T. (2021). A 50‐Year Record Of Nitrate Concentrations In The Slapton Ley Catchment, Devon, United Kingdom. Hydrological Processes, 35(1), Article e13955. https://doi.org/10.1002/hyp.13955

Slapton Ley, a coastal lake, is the largest natural body of fresh water in south‐west England. There was concern in the 1960s that the lake was becoming increasingly eutrophic. To quantify inputs of water, sediment and nutrients into the lake, Slapto... Read More about A 50‐Year Record Of Nitrate Concentrations In The Slapton Ley Catchment, Devon, United Kingdom.

The problem of underpowered rivers (2020)
Journal Article
Worrall, F., Burt, T. P., Hancock, G. R., Howden, N. J., & Wainwright, J. (2020). The problem of underpowered rivers. Earth Surface Processes and Landforms, 45(15), 3869-3878. https://doi.org/10.1002/esp.5007

This study has hypothesized that for many rivers the trade‐off between flow accumulation and the decrease in slope along channel length means that stream power increases downstream and, moreover, that given the low slope angles in headwater and low‐o... Read More about The problem of underpowered rivers.

Are peatlands cool humid islands in a landscape? (2020)
Journal Article
Worrall, F., Boothroyd, I. M., Howden, N. J., Burt, T. P., Kohler, T., & Gregg, R. (2020). Are peatlands cool humid islands in a landscape?. Hydrological Processes, 34(25), 5013-5025. https://doi.org/10.1002/hyp.13921

This study proposed that due to their high standing water tables that peatlands would be cold humid islands within their landscape, and especially so relative to farmland on mineral soils. To test this hypothesis, we measured air temperature and humi... Read More about Are peatlands cool humid islands in a landscape?.

Compartmentalisation and groundwater‐surface water interactions in a prospective shale gas basin: Assessment using variance analysis and multivariate statistics on water quality data (2020)
Journal Article
Wilson, M. P., Worrall, F., Clancy, S. A., Ottley, C. J., Hart, A., & Davies, R. J. (2020). Compartmentalisation and groundwater‐surface water interactions in a prospective shale gas basin: Assessment using variance analysis and multivariate statistics on water quality data. Hydrological Processes, 34(15), 3271-3294. https://doi.org/10.1002/hyp.13795

An environmental concern with hydraulic fracturing for shale gas is the risk of groundwater and surface water contamination. Assessing this risk partly involves the identification and understanding of groundwater‐surface water interactions because po... Read More about Compartmentalisation and groundwater‐surface water interactions in a prospective shale gas basin: Assessment using variance analysis and multivariate statistics on water quality data.

A spatial total nitrogen budget for Great Britain (2020)
Journal Article
Fan, X., Worrall, F., Baldini, L. M., & Burt, T. P. (2020). A spatial total nitrogen budget for Great Britain. Science of the Total Environment, 728, Article 138864. https://doi.org/10.1016/j.scitotenv.2020.138864

Understanding nutrient budgets makes it possible to predict where and by how much nutrients are accumulating in the environment. Previous studies have considered this problem for nitrogen (N) but have limited themselves to reactive N species (i.e. ex... Read More about A spatial total nitrogen budget for Great Britain.

A dynamic baseline for dissolved methane in English groundwater (2019)
Journal Article
Wilson, M., Worrall, F., Davies, R., & Hart, A. (2020). A dynamic baseline for dissolved methane in English groundwater. Science of the Total Environment, 711, Article 134854. https://doi.org/10.1016/j.scitotenv.2019.134854

Elevated dissolved methane (CH4) concentrations in groundwater are an environmental concern associated with hydraulic fracturing for shale gas. Therefore, determining dissolved CH4 baselines is important for detecting and understanding any potential... Read More about A dynamic baseline for dissolved methane in English groundwater.