Browsing by Subject "Environmental variables"

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An assessment of mercury contamination and the relationship between environmental variables and mercury concentrations in a seasonal wetland

De Klerk, L.P.; Wepener, V.; De Klerk, A.R. (Springer Verlag, 2013)

A study was undertaken to assess the extent of mercury contamination in the water and sediment in a seasonal wetland, as well as to determine the relationship between environmental parameters and the distribution of ...
Can the presence of curved forms of the diatom Aulacoseira ambigua in the Nile (Egypt) and Vaal (South Africa) Rivers be ascribed to similar water quality conditions?

Janse van Vuuren, S.; Saber, A.; Swanepoel, A.; Cantonati, M. (Taylor & Francis, 2018)

Spiral colonies of the diatom Aulacoseira ambigua were assigned the rank of forma ( Aulacoseira ambigua f. japonica ). This spiral-shaped, colonial, centric diatom has limited geographical distribution ...
A comparison of mollusc diversity between the relatively pristine Marico River and the impacted Crocodile River, two major tributaries of the Limpopo River, South Africa

Kemp, Mathilde; De Kock, Kenne N.; Zaayman, Jazelle L.; Wolmarans, Cornelius T. (Water Research Commission, 2016)

A study of the freshwater mollusc diversity was conducted at selected sites in the relatively pristine Marico River and the impacted Crocodile River, the major tributaries of the Limpopo River. Four surveys were conducted, ...