Rhodes University Logo

Nicole Richoux

imageAssociate Professor of Zoology

PhD Memorial University of Newfoundland (2004)
MSc Memorial University of Newfoundland (1999)

Phone +27 [0]46 603 8524
Fax +27 [0]46 622 8959
e-mail n.richoux "at" ru.ac.za

Research interests

Trophic relationships in aquatic/terrestrial ecosystems.

‌‌FA Lab

Teaching interests

Trophic Ecology
Marine Biology


Professional memberships

The Zoological Society of Southern Africa
Association for the Sciences of Limnology and Oceanography
The Society of Canadian Limnologists
The International Society of Limnologists
The South African Society of Aquatic Scientists
Western Indian Ocean Marine Science Association

Post-graduate supervision ‌‌

Current students and Post Docs

Tiyisani Chavalala, PhD student. Connectivity through allochthony: spatial variability of trophic links between adjacent terrestrial and aquatic ecosystems in South Africa



Past students and Post Docs

  lipid group 2011

Simphiwe Gininda (MSc) The effects of stream pollution on the primary producers and macroinvertebrates of the Bloukrans River.

Dr Elodie Heyns (PhD). A comparison of the trophic interactions between shallow and deep-water temperate reef communities within the Tsitsikamma National Park, South Africa.

Dr Jeffrey Hean, (PhD). Reciprocal aquatic/terestrial trophic subsidies through aquatic birds in a South African hydrological catchment.

Dr Sydney Moyo, (PhD). Trophic linkages in aquatic food webs: the role of insects.

Dr Lenin Chari, (PhD). Nutrient fluxes between water and aerial habitats: the roles of aerial predatory invertebrates in trophic cross-subsidisation.

Dr Emily Antonio. Post doctoral researcher. Trophodynamics of estuarine invertebrates.

Likho Sikutshwa (MSc). Trophic linkages in aquatic food webs: the role of amphibians.

Dr Tatendu Dalu (PhD). Plankton dynamics in a riverine/estuarine continuum

Dr Helene Masclaux (Post Doc). Laboratory studies of stable isotope fractionation in freshwater cladocerans.

Dr Leandro Bergamino (PhD). Effects of allochthonous organic matter input in an estuarine food web.

Dr Johannes Iitembu (PhD). Hake prey and predator relationships along the Namibian coastline.

Dr Laure Carassou (Post Doc). Fish as vectors of trophic subsidies in the Kowie Estuary.

David Hasek (MSc). Fatty acid profiles of subtidal benthic communities in pristine and human-exploited marine environments.

Rachel Ndhlovu (MSc). Variations in diet quality and lipid condition of suspension-feeders and grazers in the rocky intertidal zone.

Dr Louise Allan (PhD). Trophodynamics of benthic invertebrates at the Prince Edward Islands, Southern Ocean.

Ilke Vermeulen (MSc). Contribution of terrestrial-derived carbon to the diets of invertebrate suspension-feeders using fatty acid and stable isotope tracers.

Recent publications

Richoux NB, Bergamino L, Moyo S, Dalu T (2018) Spatial and temporal variability in the nutritional quality of basal resources along a temperate river/estuary continuum. Organic Geochemistry https://doi.org/10.1016/j.orggeochem.2017.11.009

Moyo S, Richoux NB (2018) Fatty acids reveal the importance of autochthonous non-vascular plant inputs to an austral river food web. Hydrobiologia https://link.springer.com/article/10.1007/s10750-017-3347-4

Chari LD, Moyo S, Richoux NB (2018) Trophic ecology of adult male Odonata. I. Dietary niche metrics by foraging guild, species, body size and location. Journal of Ecological Entomology http://onlinelibrary.wiley.com/doi/10.1111/een.12458/full

Chari LD, Moyo S, Richoux NB (2018) Trophic ecology of adult male Odonata. II. Dietary contributions of aquatic food sources. Journal of Ecological Entomology http://onlinelibrary.wiley.com/doi/10.1111/een.12459/full

Moyo S, Richoux NB (2017) Macroinvertebrate functional organisation along the longitudinal gradient of an austral temperate stream. African Zoology 52(3):125-136

Carassou L, Whitfield AK, Moyo S, Richoux NB (2017) Dietary tracers and stomach contents reveal pronounced alimentary flexibility in the freshwater mullet (Myxus capensis, Mugilidae) concomitant with ontogenetic shifts in habitat use and seasonal prey availability. Hydrobiologia, 799(1):327-348  https://link.springer.com/article/10.1007%2Fs10750-017-3230-3

Moyo S, Chari LD, Villet MH, Richoux NB (2017) Decoupled reciprocal subsidies of biomass and fatty acids in fluxes of invertebrates between a temperate river and the adjacent land. Aquatic Sciences 79:689-703 http://link.springer.com/article/10.1007/s00027-017-0529-0

Siqwepu O, Richoux NB, Vine NG (2017) The effect of dietary microalgae on the fatty acid profile, fecundity and population development of the calanoid copepod Pseudodiaptomus hessei (Copepoda: Calanoida). Aquaculture, 468:162-168      http://dx.doi.org/10.1016/j.aquaculture.2016.10.008

Masclaux H, Richoux NB (2017) Effects of temperature and food quality on isotopic turnover and discrimination in a cladoceran. Aquatic Ecology, 51(1):33-44 http://link.springer.com/article/10.1007/s10452-016-9592-1

Hean JW, Craig AJFK, Richoux NB (2017) Seasonal population dynamics and energy consumption by waterbirds in a small temperate estuary. Ostrich, 88(1):45-51 http://dx.doi.org/10.2989/00306525.2016.1230897

Heyns-Veale ER, Bernard ATF, Richoux NB, Parker D, Langlois TJ, Harvey ES, Götz A (2016) Depth and habitat determine community structure of South Africa’s warm temperate reef fish. Marine Biology 163(7):1-17 (article158)  http://link.springer.com/article/10.1007%2Fs00227-016-2933-8

Dalu T, Galloway AWE, Richoux NB, Froneman PW (2016) Effect of substrate type on phytobenthos essential fatty acid availability in an austral temperate river system. Freshwater Science 35(4):1189-1201 http://www.journals.uchicago.edu/doi/abs/10.1086/688698

Antonio ES, Richoux NB (2016) Influence of diet on the metabolic turnover of stable isotope ratios and fatty acids in the omnivorous shrimp Palaemon peringueyi. Marine Biology 163(7):1-12 (article154)  http://link.springer.com/article/10.1007/s00227-016-2930-y

Richoux NB, Allan EL, Froneman PW (2016) Developmental and spatial variations in the diet of hyperbenthic shrimp Nauticaris marionis at the Prince Edward Islands based on stable isotope ratios and fatty acid profiles. Continental Shelf Research 118:1-10  http://dx.doi.org/10.1016/j.csr.2016.02.013

Heyns ER, Bernard ATF, Richoux NB, Götz A (2016) Depth-related distribution patterns of subtidal macrobenthos in a well-established marine protected area. Marine Biology 163(2):1-15  http://link.springer.com/article/10.1007/s00227-016-2816-z

Carassou L, Whitfield AK, Bergamino L, Moyo S, Richoux NB (2016) Trophic dynamics of the Cape stumpnose (Rhabdosargus holubi, Sparidae) across three adjacent aquatic ecosystems. Estuaries and Coasts 39(4):1221-1233 http://link.springer.com/article/10.1007/s12237-016-0075-3

Antonio ES, Richoux NB (2016) Tide-induced variations in the fatty acid composition of estuarine particulate organic matter. Estuaries and Coasts 39(4): 1072-1083 http://link.springer.com/article/10.1007/s12237-015-0049-x

Dalu T, Richoux NB, Froneman PW (2016) Nature and source of suspended particulate matter and detritus along an austral temperate river-estuary continuum, assessed using stable isotope analysis. Hydrobiologia 767(1):95-110  http://link.springer.com/article/10.1007/s10750-015-2480-1

Iitembu JA, Richoux NB (2016) Characterization of the dietary relationships of two sympatric hake species (Merluccius capensis and M. paradoxus) in the northern Benguela region using fatty acid profiles. African Journal of Marine Science, 38(1):39-48  http://dx.doi.org/10.2989/1814232X.2015.1115778

Dalu T, Richoux NB, Froneman PW (2016) Distribution of benthic diatom communities in a permanently open temperate estuary in relation to physico-chemical variables. South African Journal of Botany 107:31-38 http://dx.doi.org/10.1016/j.sajb.2015.06.004


Last Modified: Wed, 22 Nov 2017 14:24:39 SAST