Jeremy has 10 years of experience working in the field of freshwater ecology. The main thrust of his research is on understanding the consequences of species invasions for stream community structure and function, and he is passionate about conserving threatened species and ecosystems.

After completing his Honours degree in Zoology, and Masters degree in Conservation Biology, he joined the Freshwater Research Unit at the University of Cape Town (UCT) in 2009 as PhD student and completed his PhD in 2013. His thesis examined the consequences of an introduced predatory fish, the rainbow trout, for biodiversity and food web functioning in headwater streams in the Cape Floristic Region of South Africa – a global hotspot for biological diversity. Impacts of introduced trout were investigated through a blend of complementary approaches including comparative surveys, experimental manipulations and assessments of fish feeding behaviour. Impacts on native fish populations and on stream community structure were evaluated by means of broad-scale comparative field surveys. Hypotheses about impacts formulated from patterns uncovered during these surveys are then tested using small-scale, controlled field experiments. In addition, observations of fish feeding behaviours, and analyses of fish diets using gut contents and stable isotope analysis, are used to ascertain whether or not trout and native fish fill equivalent predatory roles. His research constitutes the first quantitative assessment of community-wide impacts of trout in South Africa, and provides biodiversity conservators with reliable information on which management decisions can be based.

Recently Jeremy has worked on a project with Anchor Environmental investigating impacts of dams and invasive species on stream ecosystems in Lesotho. He is also involved with several projects working towards improving education and awareness around freshwater conservation issues in South Africa.


PhD (Freshwater Ecology, University of Cape Town)                                                                     
MSc (Conservation Biology, University of Cape Town)                                                             
BSc Honours (First class) (Zoology and Freshwater Biology, University of Cape Town)       
Bsc (Zoology, University of Cape Town) 


Freshwater fish ecology, community ecology, invasion biology, experimental biology, trophic ecology




Education and Outreach (Living Labs)