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

Adams J. B. (2016) Distribution and status of Zostera capensis in South African estuaries, A review South African Journal of Botany 107: 63–73

Keywords: Keystone, floods, submerged macrophytes, Eelgrass