Projects per year
I am an interdisciplinary researcher and lecturer, focusing on the sedimentological dynamics and ecological structure and functioning of intertidal coastal environments.
My research interests lie in understanding the complex physical, biological and chemical interactions that determine how natural environments function, using intertidal habitats such as mudflats and mangrove forests as model systems. This research is interdisciplinary, drawing on disciplines as diverse as sedimentology, ecology and remote sensing. There are 2 main themes to my research:
- The mediation of coastal dynamics by complex interactions between physical, biological and chemical components.
- Methodological and technological advances and applications to support this research.
My lecturing draws on my research expertise, focussing on geoscience with some ecology. I teach at all levels of undergraduate and postgraduate. I also lead outreach and engagement courses, including running a summer school on issues relating to erosion in the coastal zone.
PhD Studentships Available
Key Research Interests and Expertise
My research is focussed on two main themes:
1) The mediation of coastal dynamics by complex interactions between physical, biological and chemical components.
This research investigates physical, biological and chemical properties and processes in coastal habitats and how these are mediated by complex interactions. Of particular interest is how biota alters the erosion of sediments via biostabilisation and biodestabilisation.
Intertidal mudflats, salt marshes and mangrove forests have an intimate association between the organisms (micro-algae and macrofauna) and their habitat (the sediment). The organisms signficantly modify the sediments they inhabit and vice versa. These habitats are particularly at threat from global climatic change and sea level rise and are considered to be indicator habitats for climate change.
This research interest started with my undergraduate project, where I investigated how diatoms (microscopic algae) stabilised sediments, protecting the sediment from erosion. I continue to pursue this research question today. More recently, I have been investigating how macrofauna species act on the sediment in isolation, how changes in species density affect their actions and how combinations of species interact to alter the mudflat habitat and process therein, using a range of biogeochemical measurements and erosion devices.
Investigating the influence of biota on sedimentary properties and processes not only addresses fundamental sedimentological and ecological questions, but is vital for developing models of sediment dynamics, understanding ecosystem services and for managing coastal habitats.
2) Methodological and technological advances and applications.
Coastal habitats provide unique challenges for researchers, requiring specialised equipment and methods. The second main theme of my research is the development and application of novel technologies and methodologies to facilitate research, some of which are outlined below. My extensive tests and calibrations of erosion devices have led to new experimental approaches that have improved the accuracy of these measurements. I helped develop and calibrate an improved Cohesive Strength Meter device for measuring sediment erosion (based on the original design of Paterson 1989). This device is now commercially produced by PARTRAC, UK. email@example.com. More recently, I have developed a new erosion device FloWave, which creates a combined oscillatory and unidirectional flow to simulate the effects of combined tidal flow and wave action. I have collaborated with Dr R. Murphy, the University of Sydney firstname.lastname@example.org to develop new remote sensing techniques for measuring algae in intertidal sediments, using colour-infrared photography and new derivative based approaches to spectroradiometry.
Development of these new technologies and methodologies has improved our understanding of how coastal ecosystems function and respond to anthropogenic impacts.
Publications: EPrints Digital Repository
Director of Coastal Science: Marine Knowledge Exchange Network (MKEN)
- ENV Chair of the Board of Examiners
- 2009 - present: Lecturer in Coastal Physical Processes, University of East Anglia. Employed as a lecturer in the Environmental Sciences School at the University of East Anglia. Currently Principle Investigator on the NERC Urgency Grant funded project 'Environmental Impacts of the December Storm Surge on the North Norfolk Coast.' I gained Royal Society funding for the project FloWave - an erosion device for simulating combined linear and oscillatory flows in collaboration with Sediment Services UK and Partrac UK. Lecturer on various ENV undergraduate and postgraduate modules, for more details see the teaching tab above.
- 2004 - 2008: Research Fellow, University of Sydney. Employed as a Research Fellow, I continued to work on the Mangrove Structure and Function project. I was also successful in gaining ARC funding for the 3 year multidisciplinary project: 'Understanding biodiversity by experimental analysis of links between physical, chemical and biological properties of intertidal sediments,' with collaborators at the University of Sydney. Co-lecturer on the University of Sydney postgraduate course ENVI5904: Understanding Environmental Uncertainty.
- 2001 - 2003: Postdoctoral Fellow, University of Sydney. Employed as part of a long-term project to improve understanding of the ecological structure and functioning of mangrove forests, mudflats and salt marshes. I led the sedimentological component of the successful University of Sydney large equipment grant: 'Analytical system for integrating function and structure of complex intertidal biodiversity.'
- 1999 - 2001: Postdoctoral Research Assistant, University of St. Andrews. Employed on the EU project CLIMEROD, also worked on the BIOPTIS project and led the St. Andrews component of the successful BIOFLOW international flume network grant application. Tutor on the Maths for Biologists course.
- 1995 - 1999: University of St. Andrews, Ph.D. in Marine Biology: 'Microbial mediation of intertidal sediment stability.' I worked on a number of large research projects, including PROMAT and INTRMUD.
- 1995: University of St. Andrews, BSc (Hons) in Geology and Environmental Biology (1st class).
- Marine Knowledge Exchange Network -2013 Storm Surge: Environmental and Social Impacts, Keynote speaker, November 2014.
- Marine Knowledge Exchange Network - The 2013 storm surge: physical impacts and economic implications, Keynote speaker, July 2014.
- Conference talk - Biotic and abiotic interactions driving the erodibility of intertidal sediments: EPS and sand. Ocean Sciences Meeting, Hawaiii, February 2014.
- Environment Agency drop in public meeting - UEA research on the 2013 storm surge.
- Natural Coastal Protection - Expert Workshop Meeting, Cripps Court, Magdalene College, Cambridge March 2012.
Expertise related to UN Sustainable Devlopment Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
Vice Chair of the Norfolk and Suffolk Coastal Network, Norfolk and Suffolk Coastal NetworkAug 2016 → …
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Lettice, F., Alexander, M., Askounis, A., Baker, A., Cammidge, A., Chao, Y., Fabian, L., Fielden, J., Hernaez Saenz De Zaitigui, M., Hui, O., Kaplani, E., Khimyak, Y., Liss, P., Lord, R., Marin, M. J., Mayes, A., Melendi-Espina, S., Nolte, S., Romanov, A., Saeed, A., Sobolewski, A., Tolhurst, T. & Wright, J.
6/11/20 → 5/05/22
1/10/09 → 31/03/11
Walkinshaw, C., Lindeque, P. K., Thompson, R., Tolhurst, T. & Cole, M., 1 Mar 2020, In: Ecotoxicology and Environmental Safety. 190, 14 p., 110066.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile84 Citations (Scopus)24 Downloads (Pure)
Booty, J. M., Underwood, G. J. C., Parris, A., Davies, R. G. & Tolhurst, T., 25 Aug 2020, In: Frontiers in Marine Science. 7, 685, 685.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile1 Citation (Scopus)11 Downloads (Pure)
The effect of shading and nutrient addition on the microphytobenthos, macrofauna, and biogeochemical properties of intertidal flat sedimentsTolhurst, T., Chapman, G. & Murphy, R., 26 Jun 2020, In: Frontiers in Marine Science. 7, 419.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile2 Citations (Scopus)10 Downloads (Pure)
The Marine Knowledge Exchange Network: Insights from an Innovative Regional-to-National Scale Academic-Led Knowledge-to-Impact Network and Recommendations for Future InitiativesJohnson, M. T., Johnson, L. J., Bayliss-Brown, G. A., Danino, V., Day, S., Dunnett, I., Forster, J., Lorenzoni, I., Kennedy, K., Malin, G., Moore, K., Moore Fuller, P., Walton, M. & Tolhurst, T. J., 3 Jul 2020, In: Coastal Management. 48, 4, p. 308-335 28 p.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile4 Downloads (Pure)
Determining How Functionally Diverse Intertidal Sediment Species Preserve Mudflat Ecosystem Properties after Abrupt Biodiversity LossHale, R., Jacques, R. O. & Tolhurst, T. J., 1 Mar 2019, In: Journal of Coastal Research. 35, 2, p. 369-375 7 p.
Research output: Contribution to journal › Article › peer-reviewOpen AccessFile4 Citations (Scopus)26 Downloads (Pure)