Gavin Tweddle

MSc Rhodes University

Marine Biology PhD

'phone +27 [0]46 603-8525
FAX +27 [0]46 622-8959
e-mail g98t3307@campus.ru.ac.za

Thesis title

The effect of breaching, environmental and biological factors on fish populations in a temporarily open/closed estuary. Supervisor: Professor William Froneman

Recent publications

TWEDDLE, G.P. & W.P. FRONEMAN, In Prep: Population dynamics of littoral zone ichthyofauna in the temperate, temporarily open/closed Kasouga Estuary, South Africa. To be submitted to South African Journal of Aquatic Science.

TWEDDLE, G.P. & W.P. FRONEMAN, In Prep: Investigation of the feeding ecology of selected fish species using stable isotope (d13C) analysis. To be submitted to South African Journal of Aquatic Science.

TWEDDLE, G.P. & W.P. FRONEMAN, In Prep: Variability in the recruitment of zooplankton and nekton into a temporarily open/closed Eastern Cape esatuary, during three different hydrological mouth phases.