Browsing Research Output by Subject "Diatoms"
Now showing items 1-9 of 9
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Diatom teratologies as biomarkers of contamination: are all deformities ecologically meaningful?
(Elsevier, 2017)Contaminant-related stress on aquatic biota is difficult to assess when lethal impacts are not observed. Diatoms, by displaying deformities (teratologies) in their valves, have the potential to reflect sub-lethal responses ... -
Diatoms as indicators of historical water quality: a comparison of samples taken in the Wemmershoek catchment (Western Province, South Africa) in 1960 and 2008
(WRC (Water Research Commission), 2014)Historical diatom records provide a means of retrospectively determining water quality and inferring ecological condition in rivers and streams. In this study we re-sampled sites originally sampled 48 years previously. We ... -
Diploneis fenestrata sp. nov. (Bacillariophyta), a new aerophilic diatom species from Zambia, Africa
(Magnolia Press, 2014)Diploneis fenestrata, a new aerophilic diatom is described from Lumangwe falls, Zambia. This novel species occurs as an epiphyte on the roots and stems of trees located within the spray zone of the falls. Its morphology ... -
Navicula nielsfogedii J.C. Taylor & Cocquyt sp. nov., a new diatom (Bacillariophyta) from tropical and sub-tropical Africa
(Czech Phycological Society, 2016)In this paper we describe Navicula nielsfogedii sp. nov., a commonly occurring diatom through central and southern Africa and distributed from the sub-tropical zones of South Africa to tropical central Africa. We have ... -
New and interesting Eunotia (Bacillariophya) taxa from the Democratic Republic of the Congo, tropical central Africa
(Royal Botanical Society of Belgium and the Botanic Garden Meise, 2016)Background and aims – Large-celled Eunotia species from tropical central Africa are documented in order to define morphological variation within species and to describe new or poorly documented taxa. Methods – Samples ... -
Overview and status of estuarine microphytobenthos ecological research in South Africa
(Taylor & Francis, 2018)This article presents a historical overview of estuarine microphytobenthos (MPB) research in South Africa published over the period 1950 to the present, highlighting major milestones, challenges and estuarine management ... -
Silica diatom shells tailored with Au nanoparticles enable sensitive analysis of molecules for biological, safety and environment applications
(Springer, 2018)Diatom shells are a natural, theoretically unlimited material composed of silicon dioxide, with regular patterns of pores penetrating through their surface. For their characteristics, diatom shells show promise to be used ... -
Transforming diatomaceous earth into sensing devices by surface modification with gold nanoparticles
(Elsevier, 2019)Diatomaceous earth, or diatomite, is produced through the accumulation of diatom (Bacillariophyceae) skeletons(i.e. cell walls called frustules) made of amorphous silica. The porous, highly symmetrical structure and ... -
Using Confocal Microscopy And Pigment Analyses To Detect Adverse Insecticide Effects In Non-Target Freshwater Diatom Species - A Proof-Of-Concept Using Nitzschia Palea
(Springer, 2023)The persistence of insecticides in aquatic environments is a cause of concern and to date hardly any studies have focused on the effects that DDT and deltamethrin have on non-target freshwater diatom communities. The ...