Author:Oberholster, Paul J; Botha, AM; Ashton, PJDate:Apr 2009Data generated during 12 field trips in 2006 were used to investigate possible changes in the biota communities of Lake Tswaing after a borehole was sunk in 1988/1989 near the centre of the crater lake. The Tswaing meteorite crater lake is a ...Read more
Author:Matthews, MW; Bernard, StewartDate:Sep 2013Characterizing the specific inherent optical properties (SIOPs) of water constituents is fundamental to remote sensing applications. Therefore, this paper presents the absorption properties of phytoplankton, gelbstoff and tripton for three ...Read more
Author:Lemley, DA; Adams, JB; Taljaard, SusanDate:Apr 2017This study compared the spatio-temporal dynamics in two agriculturally-influenced South African estuaries - Gamtoos and Sundays - to investigate how contrasting hydrological alterations influence physical, chemical and biological responses. ...Read more
Author:Robinson, CM; Huot, Y; Schuback, N; Ryan-Keogh, Thomas J; Thomalla, Sandy J; Antoine, DDate:Jul 2021Studying the biogeochemistry of the Southern Ocean using remote sensing relies on accurate interpretation of ocean colour through bio-optical and biogeochemical relationships between quantities and properties of interest. During the Antarctic ...Read more
Author:Nel, M; Adams, JB; Human, LRD; Nunes, M; Van Niekerk, Lara; Lemley, DADate:Dec 2023Context: Artificial breaching of intermittently closed estuaries has become more frequent in the face of global-change pressures. Aims: This study aimed to determine whether the ecological health of the Great Brak Estuary has been affected ...Read more
Author:Nicholson, Sarah-AnneDate:Oct 2012Understanding the seasonal and intra-seasonal (daily to weekly) changes of the upper ocean and the impact on the primary production in the Southern Ocean is key to better understanding the sensitivities of the global carbon cycle.Read more
Author:Thomalla, Sandy J; Waldron, HN; Lucas, MI; Read, JF; Ansorge, IJ; Pakhomov, EDate:2010During the 1999 Marion Island Oceanographic Survey (MIOS 4) in late austral summer, a northbound and reciprocal southbound transect were taken along the Southwest Indian and Madagascar Ridge, between the Prince Edward Islands and 31° S. The ...Read more
Author:Selala, MC; Oberholster, Paul J; Surridge, KAK; De Klerk, Arno R; Botha, A-MDate:Jan 2013An investigation on the effect of a vegetable oil spill was conducted on the biological diversity of the Con Joubert Bird Sanctuary wetland in South Africa before and after biostimulation with different concentrations of fertilizer during ...Read more
Author:Van der Molen, JDate:Jan 2008Diatoms are an important group of micro algae occurring in marine, estuarine and freshwater habitats as phytoplankton and phytobenthos. The species composition at any given time and place is indicative of the prevailing environmental conditions ...Read more
Author:Van der Molen, JDate:Jul 2008Diatoms are an important group of micro algae occurring in marine, estuarine and freshwater habitats as phytoplankton and phytobenthos. The species composition at any given time and place is indicative of the prevailing environmental conditions ...Read more
Author:Matthews, MW; Bernard, StewartDate:2013A two-layered sphere model is used to investigate the impact of gas vacuoles on the inherent optical properties (IOPs) of the cyanophyte Microcystis aeruginosa. Enclosing a vacuole-like particle within a chromatoplasm shell layer significantly ...Read more