Gavin Williams


Doctoral Researcher

School of Geography, Earth and Environmental Sciences

Gavin Williams

Contact details

School of Geography, Earth and Environmental Sciences
University of Birmingham
B15 2TT


Title of PhD: Impacts of Extreme Events on Ecosystem Functioning in Streams

Supervisors: Dr Mark Ledger, Dr Lesley Batty

Gavin is a freshwater ecologist, investigating the impacts of extreme events on stream functioning. Using both laboratory microcosm and field mesocosm experimental approaches, Gavin’s research aims to ascertain the functional impacts of drought on UK chalk streams and rivers in the South of England. His research also intends to determine thresholds in which macroinvertebrates will be unable to perform their functional roles, and ecosystem processes may be compromised.

Gavin’s current research project is funded by the UK National Environment Research Council (NERC) and led by Dr Mark Ledger.


BSc Environmental Science (2011) First Class Honours


Gavin previously studied BSc Environmental Science at the University of Birmingham, where he specialized in freshwater ecology towards the end of his degree and became interested in the impacts of climate change induced stressors and abiotic disturbances on freshwater ecology. Now undertaking doctoral research, Gavin also is an undergraduate field course demonstrator for BSc Environmental Science.


Research interests

  • Aquatic ecology
  • Freshwater Macroinvertebrate Taxonomy
  • Disturbance Ecology
  • Functional Ecology

Other activities

  • Member of the Freshwater Biological Association (FBA)
  • Member of the British Hydrological Society (BHS)
  • Member of the British Ecological Society (BES)
  • Graduate member of the Chartered Institute of Ecology and Environmental Management (Grad CIEEM)


Williams, G. M. D., O’Callaghan, M. J., Trimmer M., Woodward, G. & Ledger, M. E (Poster) Fragility of stream ecosystem functioning in response to drought: an experimental test. British Hydrological Association’s ‘Ecohydrology/Hydroecology;’ University of Birmingham, April 2013.

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