The interactive responses of water quality and hydrology to changes in multiple stressors, and implications for the long-term effective management of phosphorus

Crossman, Jill; Whitehead, Paul; Bishop, Kevin; Jin, Li; Shahgedanova, Maria; Castellazzi, Marie; Wade, Andrew J.

doi:10.1016/j.scitotenv.2013.02.033

Cited by 47 publications

(70 citation statements)

References 32 publications

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“…The model parameters were slightly adjusted in order to reproduce accurately more recent total phosphorus concentration values measured as part of the Centre for Ecology and Hydrology's Thames Initiative Research Platform (Bowes et al, 2012). The model calibration/validation was satisfactory, in line with the results provided by Crossman et al (2013). In this study, water discharge, water temperature and phosphorus concentration were used to drive the phytoplankton model.…”

Section: Incamentioning

confidence: 69%

“…For each land use, a phosphorus daily application rate was defined, based on fertiliser usage and number of grazing animals, using statistics from the Department for Food and Rural Affairs (DEFRA) and literature values (Johnes and Butterfield, 2003). A detailed description of the INCA-P parameterisation and model application to the River Thames catchment is provided in Crossman et al (2013) and Whitehead et al (2013). The model outputs include several hydrological and water quality variables.…”

Section: Incamentioning

confidence: 99%

“…The model outputs include several hydrological and water quality variables. In this study, we used the model developed and calibrated by in Crossman et al (2013) and Whitehead et al (2013). The model parameters were slightly adjusted in order to reproduce accurately more recent total phosphorus concentration values measured as part of the Centre for Ecology and Hydrology's Thames Initiative Research Platform (Bowes et al, 2012).…”

Section: Incamentioning

confidence: 99%

“…The future land use scenario and mitigations strategy (iii) describes a situation where the agricultural land expands but optimal phosphorus removal mitigation strategies have also taken place, based on a combined reduction of fertiliser and phosphorus removal from wastewater. This strategy was found to be the most effective for phosphorus control by Crossman et al (2013) and Whitehead et al (2013). These scenarios were taken into account by modifying the INCA model parameters.…”

Section: Land Use/land Management Scenariosmentioning

confidence: 99%

“…The phosphorus mitigation strategy was parameterised by reducing by 20% the fertiliser application rates and applying and limit of 0.3 mg L -1 of total phosphorus in wastewater discharge from sewage treatment works. More details about the model parameterisation for land use and management impact analysis in the River Thames can be found in Crossman et al (2013).…”

Section: Land Use/land Management Scenariosmentioning

confidence: 99%

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Impacts of climate change, land-use change and phosphorus reduction on phytoplankton in the River Thames (UK)

Bussi

Whitehead

Bowes

et al. 2016

Science of The Total Environment

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Article (refereed) -postprintBussi, Gianbattista; Whitehead, Paul G.; Bowes, Michael J.; Read, Daniel S.; Prudhomme, Christel; Dadson, Simon J. 2016. Impacts of climate change, land-use change and phosphorus reduction on phytoplankton in the River Thames (UK).Contact CEH NORA team at noraceh@ceh.ac.ukThe NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. AbstractPotential increases of phytoplankton concentrations in river systems due to global warming and changing climate could pose a serious threat to the anthropogenic use of surface waters. Nevertheless, the extent of the effect of climatic alterations on phytoplankton concentrations in river systems has not yet been analysed in detail. In this study, we assess the impact of a change in precipitation and temperature on river phytoplankton concentration by means of a physically-based model. A scenarioneutral methodology has been employed to evaluate the effects of climate alterations on flow, phosphorus concentration and phytoplankton concentration of the River Thames (southern England).In particular, five groups of phytoplankton are considered, representing a range of size classes and pigment phenotypes, under three different land-use/land-management scenarios to assess their impact on phytoplankton population levels. The model results are evaluated within the framework of future climate projections, using the UK Climate Projections 09 (UKCP09) for the 2030s. The results of the model demonstrate that an increase in average phytoplankton concentration due to climate change is highly likely to occur, with the magnitude varying depending on the location along the River Thames. Cyanobacteria show significant increases under future climate change and land use change. An expansion of intensive agriculture accentuates the growth in phytoplankton, especially in the upper reaches of the River Thames. However, an optimal phosphorus removal mitigation strategy, which combines reduction of fertiliser application and phosphorus removal from wastewater, can help to reduce this increase in phytoplankton concentration, and in some cases, compensate for the effect of rising temperature.

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Section: Incamentioning

confidence: 69%

Section: Incamentioning

confidence: 99%

Section: Incamentioning

confidence: 99%

Section: Land Use/land Management Scenariosmentioning

confidence: 99%

Section: Land Use/land Management Scenariosmentioning

confidence: 99%

See 3 more Smart Citations

Impacts of climate change, land-use change and phosphorus reduction on phytoplankton in the River Thames (UK)

Bussi

Whitehead

Bowes

et al. 2016

Science of The Total Environment

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The effectiveness and resilience of phosphorus management practices in the Lake Simcoe watershed, Ontario, Canada

et al. 2016

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Uncertainty surrounding future climate makes it difficult to have confidence that current nutrient management strategies will remain effective. This study used monitoring and modeling to assess current effectiveness (% phosphorus reduction) and resilience (defined as continued effectiveness under a changing climate) of best management practices (BMPs) within five catchments of the Lake Simcoe watershed, Ontario. The Integrated Catchment Phosphorus model (INCA‐P) was used, and monitoring data were used to calibrate and validate a series of management scenarios. To assess current BMP effectiveness, models were run over a baseline period 1985–2014 with and without management scenarios. Climate simulations were run (2070–2099), and BMP resilience was calculated as the percent change in effectiveness between the baseline and future period. Results demonstrated that livestock removal from water courses was the most effective BMP, while manure storage adjustments were the least. Effectiveness varied between catchments, influenced by the dominant hydrological and nutrient transport pathways. Resilience of individual BMPs was associated with catchment sensitivity to climate change. BMPs were most resilient in catchments with high soil water storage capacity and small projected changes in frozen‐water availability and in soil moisture deficits. Conversely, BMPs were less resilient in catchments with larger changes in spring melt magnitude and in overland flow proportions. Results indicated that BMPs implemented are not always those most suited to catchment flow pathways, and a more site‐specific approach would enhance prospects for maintaining P reduction targets. Furthermore, BMP resilience to climate change can be predicted from catchment physical properties and present‐day hydrochemical sensitivity to climate forcing.

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Catchment Management of Lake Simcoe, Canada

Crossman

2021

Handbook of Catchment Management 2e

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The interactive responses of water quality and hydrology to changes in multiple stressors, and implications for the long-term effective management of phosphorus

Cited by 47 publications

References 32 publications

Impacts of climate change, land-use change and phosphorus reduction on phytoplankton in the River Thames (UK)

Impacts of climate change, land-use change and phosphorus reduction on phytoplankton in the River Thames (UK)

The effectiveness and resilience of phosphorus management practices in the Lake Simcoe watershed, Ontario, Canada

Catchment Management of Lake Simcoe, Canada

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