Russell I. A. (2013) Spatio-temporal variability of surface water quality parameters in a South African estuarine lake system African Journal of Aquatic Science 38: 53–66

Keywords: Dissolved oxygen, long-term monitoring, pH, salinity, temperature, Touw estuary, turbidity, Wilderness lakes

Russell I. A., Randall R. M. & Hanekom N. (2014) Spatial and temporal patterns of waterbird assemblages in the Wilderness lakes complex, South Africa Waterbirds 37: 1–18

Keywords: Depth variability, salinity, submerged macrophytes, swartvlei estuary, Touw estuary, turbidity, waterbird communities

Russell I. A. (2015) Spatio-temporal variability of five surface water quality parameters in the Swartvlei estuarine lake system, South Africa African Journal of Aquatic Science 40: 119–131

Keywords: Dissolved oxygen, long-term monitoring, pH, salinity, tempreture, turbidity

Barnes R. S. K. (2002) The occurrence and ecology of a marine hydrobiid mud snail in the southern hemisphere: the Knysna Estuary, South Africa African Journal of Ecology 40: 289–294

Keywords: competition, intertidal, lagoon, Ocypodidae, Potamididae, salinity

Barnes R. S. K. (2010) The distribution and habitat in the Knysna Estuary of the endemic South African mud snail Hydrobia knysnaensis and the influence of intraspecific competition and ambient salinity on its abundance African Journal of Aquatic Science 29: 205–211

Keywords: Coastal, competition, eel-grass, estuary, lagoon, mudsnail, rarity, salinity

Barnes R. S. K. & Ellwood M. D. F. (2012) Spatial variation in the macrobenthic assemblages of intertidal seagrass along the long axis of an estuary Estuarine, Coastal and Shelf science 112: 173–182

Keywords: Salinity, seagrass meadow, biodiversity, estuary, benthos, intertidal