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Identification of areas at risk of phosphorus loss

PhD defence, Friday 18 November 2022, Jonas Rolighed

Jonas Rolighed

Phosphorus is an important plant nutrient but loss of phosphorus from cultivated areas is harmful to the aquatic environment. To counteract phosphorus loss, it is necessary to identify the main phosphorus sources and loss pathways in a given catchment.

During his PhD study, Jonas Rolighed investigated various aspects of phosphorus dynamics in soil in order to map areas where the risk of losing dissolved phosphorus through tile drains is greatest and to investigate how the soil properties and catchment phosphorus sources affect the amount of phosphorus lost to streams.

The research results contribute to the understanding of the main loss pathways of phosphorus and enable efficient placement of targeted mitigation measures to reduce phosphorus loss and improve the ecological status of the aquatic environment.

The Ph.D. study was completed at the Department of Ecoscience, Faculty of Technical Sciences, Aarhus University.

This summary was prepared by the PhD student.

Time: Friday, November 18 2022, at 13:00

Place: Aarhus University, building 1111, room 110, C. F. Møllers Allé 8, 8000 Aarhus C
Title of dissertation: Modelling phosphorus loss by leaching from Danish soils

Contact information: Jonas Rolighed, e-mail: jonasrolighed@gmail.com

Members of the assessment committee:
Scientist Remi Dupas, National Research Institute for Agriculture, Food and Environment, Rennes, France

Research scientist (Emeritus) Wim Chardon, Wageningen Environmental Research - WUR, The Netherlands

Professor Martin Holmstrup, Department of Ecoscience, Aarhus University(Chair)

Main supervisor:
Senior researcher Hans E. Andersen, Department of Ecoscience, Aarhus University

Associate professor Goswin J. Heckrath, Department of Agroecology, Aarhus University

Associate professor Gitte H. Rubæk, Department of Agroecology, Aarhus University

Senior Researcher Oscar F. Schoumans, Alterra, Wageningen University

Language: The PhD dissertation will be defended in English

The defence is public.


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