Ms. Grea Groenewald (Wessels)

MSc Applied Marine Science (UCT)

John Day Building, Rm. 2.34


Grea spent her childhood in the Free State but has always had an interest in the ocean and its animals, something that was sparked by scuba diving in high school and a love of photography. Grea completed her BSc in 2004 in Ocean & Atmospheric Science and Zoology and her BSc (Honours) in Zoology in 2005.

In 2006 she moved to London and volunteered and worked in the Education department of the London Aquarium. This experience further cemented her interest in Marine Science particularly her interest in fisheries management, conservation and marine education. 

She started her MSc in Applied Marine Science in 2008, which provided her with a broad base in marine ecology. Her dissertation focused on meristic (vertebral counts) and morphometric (body shape) variation among sardine (Sardinops sagax) around the coast of southern Africa. 

Grea is currently a PhD student at the University of Cape Town studying bioenergetics of small pelagic fish, in particular anchovy (Engraulis encrasicolus), sardine (Sardinops sagax) and redeye (Etrumeus whiteheadii). She is using Dynamic Energy Budget (DEB) theory to model how different food environments and temperature might affect the growth, development and reproduction of these small pelagic fish in the Benguela ecosystem. 


Bioenergetic modelling of development, growth and reproduction in the context of the Dynamic Energy Budget (DEB) theory of small pelagic fish in the Benguela (working title).

(supervisors Coleen Moloney and Carl van der Lingen)

Peer reviewed publications


van der Lingen C.D., Hendricks M., Durholtz M.D., Wessels G and Mtengwane C. (2010) Biological characteristics of sardine caught by the beach-seine fishery during the KwaZulu-Natal sardine run. African Journal of Marine Science 32(2): 309–330, doi:10.2989/1814232X.2010.501591

Wessels G., Moloney C.L., van der Lingen C.D. (2010) The effects of freezing on the morphometrics of sardine Sardinops sagax (Jenyns, 1842). Fisheries Research 106(3): 528-534, doi:10.1016/j.fishres.2010.10.004