Browsing by Author "10060294 - Wolmarans, Cornelius Tobias"
Now showing items 1-20 of 22
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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, ... -
Die invloed van gesondheidsopvoeding op die prevalensie van skistosoombesmettings by leerders in 'n skistosoomendemiese gebied in die Limpopoprovinsie
Wolmarans, Cornelius T.; De Kock, Kenne N.; Theron, J.; Postma, S. (Die Suid-Afrikaanse Akademie vir Wetenskap en Kuns, 2008) -
Die verspreiding en habitat van Chambardia wahlbergi en Chambardia petersi (Bivalvia: Iridinidae) in Suid–Afrika
De Kock, Kenne N.; Wolmarans, Corrie T. (AOSIS, 2012)Based on the data in the database of the National Freshwater Snail Collection (NFSC), the distribution and habitat of Chambardia wahlbergi and Chambardia petersi, are presented and discussed. Although the distribution ... -
Die verspreiding en habitats van Burnupia mooiensis in Suid–Afrika: (Walker 1912 [Gastropoda: Ancylidae])
De Kock, Kenné N.; Wolmarans, Cornelius T. (AOSIS, 2016)Burnupia mooiensis is reeds in 1912 vanaf eksemplare uit die Mooirivier, Potchefstroom beskryf en die oudste monster is in 1956 in die Nasionale Varswaterslakversameling (NVWSV) opgeneem. Op die oomblik is daar 14 spesies ... -
Distribution and habitats of Burnupia trapezoidea (Boettger, 1910) (Gastropoda: Ancylidae) in South Africa
De Kock, K.N.; Wolmarans, C.T. (WRC, 2017)This paper deals with the geographical distribution and habitat preferences of B. trapezoidea, the third most widespread species of the 14 species of Burnupia currently on record in the database of the National Freshwater ... -
Distribution and habitats of Melanoides tuberculata (Muller, 1774) and M. victoriae (Dohrn, 1865) (Mollusca: Prosobranchia: Thiaridae) in South Africa
Wolmarans, Cornelius; De Kock, Kenne (Water Research Commission, 2009) -
Distribution of the pill clam Pisidium langleyanum melvill & Ponsonby, 1891 (Bivalvia: Sphaeriidae) in South Africa
Wolmarans, Cornelius T.; De Kock, Kenne N. (South Africa Water Research Commission, 2008)This article focuses on the geographical distribution and habitats of the pill clam, Pisidium langleyanum as reflected by 632 samples on record in the database of the National Freshwater Snail Collection (NFSC). The 177 ... -
Eier-ekskresiepatrone as kriterium vir die bepaling van prevalensie en intensiteit van besmetting by manlike en vroulike individue in verskillende ouderdomsgroepe in n skistosoomendemiese gebied in die Limpopoprovinsie
De Kock, Kenné Nicolaas; Wolmarans, Cornelius Tobias (AOSIS OpenJournals, 2010) -
The influence of health education on the prevalence, intensity and morbidity of Schistosoma haematobium infections in children over a two-year period in the Limpopo Province, South Africa
Wolmarans, Cornelius T.; De Kock, Kenne N. (Medpharm Publications, 2009)The influence of health education on the prevalence and intensity of Schistosoma haematobium infections, as well as on the related morbidity, was studied in schoolchildren between the ages of 4 and 14. Three groups of ... -
Influence of selected abiotic factors on aquatic macroinvertebrate assemblages in the Olifants River catchment, Mpumalanga, South Africa
Kemp, M.; De Kock, K.N.; Wepener, V.; Roets, W.; Quinn, L.; Wolmarans, C.T. (Taylor & Francis, 2014)Biodiversity is frequently seen as an indicator of ecological health. Therefore a survey of the macroinvertebrates of the Olifants River, one of the most polluted rivers in South Africa, was conducted in 2010–2011. Four ... -
Invasive Alien freshwater snail species in the Kruger National Park, South Africa
Wolmarans, Cornelius T.; De Kock, Kenne N. (South African National Parks, 2008) -
Korttermynbedreigings vir varswater–Mollusca in die Olifantsrivier en enkele sytakke
De Kock, Kenne N.; Wolmarans, Cornelius T.; Kemp, Mathilde; Roets, Wietsche (AOSIS, 2013)Short-term threats for the sustained survival of freshwater Mollusca in the Olifants River and selected tributaries. The conservation status of less than 2% of the more or less 7000 mollusk species known worldwide have ... -
Metallothionein induction as indicator of low level metal exposure to aquatic macroinvertebrates from a relatively unimpacted river system in South Africa
Kemp, M.; Wepener, V.; De Kock, K.N.; Wolmarans, C.T. (Springer, 2017)The Marico River is relatively unaffected by anthropogenic activities. However, metal concentrations—mainly from natural sources—occasionally exceed environmental quality guidelines. Macroinvertebrates are capable to react ... -
'n Vergelyking van die Mollusca-diversiteit in die Mooirivier (Noordwes-Provinsie) soos gevind met opnames wat gemaak is in 1963 en weer 50 jaar later
Wolmarans, Cornelius T.; Wepener, Victor; Pretorius, Uané; Erasmus, Johannes H.; De Kock, Kenne N. (AOSIS, 2015)Die hoogste getal gedokumenteerde uitsterwings van enige belangrike taksonomiese groep word aan die Mollusca toegedig. Faktore wat hoofsaaklik hiervoor verantwoordelik is, sluit onder meer omgewingsveranderinge en ... -
A new distribution record of Chambardia wahlbergi (Krauss, 1848) (Bivalvia: Iridinidae) and Unio caffer (Krauss, 1848) (Bivalvia: Unionidae) in South Africa
De Kock, K.N.; Wolmarans, C.T.; Erasmus, J.H.; Lubbe, E.; Strauss, H.M.; Van Niekerk, G.L. (WRC, 2017)Little is known with regard to the conservation status of invertebrates of South Africa; however, in the revised edition of the IUCN Red Data List (2011) the conservation status of both Unio caffer and Chambardia wahlbergi ... -
The possible association between selected sediment characteristics and the occurrence of benthic macroinvertebrates in a minimally affected river in South Africa
Wolmarans, Cornelius T.; Kemp, Mathilde; De Kock, Kenné N.; Wepener, Victor (Taylor & Francis, 2017)Forty-two families of which the vast majority associated with particles >2000 µm were found. Sediment particle sizes <2000 µm had a detrimental effect on biodiversity. The highest biodiversity was recorded at sites ... -
A semi-quantitative survey of macroinvertebrates at selected sites to evaluate the ecosystem health of the Olifants River
Wolmarans, C.T.; Kemp, M.; De Kock, K.N.; Roets, W.; Van Rensburg, L. (WRC (Water Research Commission), 2014)This study was conducted to evaluate the ecosystem health of the Olifants River by means of semi-quantitative surveys of the macroinvertebrates at 7 selected sites in the catchment. These surveys were performed during the ... -
Verspreiding en habitats van drie lewerbot-tussen-gashere in Suid-Afrika en die gesondheidsimplikasies daarvan
Wolmarans, Cornelius T.; De Kock, Kenne N. (National Research Foundation, 2008) -
Verspreiding en habitats van Pisidium viridarium Kuiper, 1956 (Bivalvia : Sphaeriidae) soos weerspieël deur die rekords van die Nasionale Varswaterslakversameling van Suid-Afrika
De Kock, K.N.; Wolmarans, C.T. (AOSIS, 2008)he genus Pisidium includes some of the smallest bivalves in the family Sphaeriidae. The distribution of this group is cosmopolitan and they can utilize virtually any freshwater habitat, including peat bogs. Without doubt ... -
Verspreiding en habitats van Unio caffer Krauss, 1848 (Bivalvia: Unionoida: Unionidae) in Suid-Afrika gebaseer op die rekords in die databasis van die Nasionale Varswaterslakversameling distribution and habitats of Unio caffer Krauss, 1848 (Bivalvia: Unionoida: Unionidae) in South Africa based on the records in the database of the national freshwater snail collection
De Kock, Kenné Nicolaas; Wolmarans, Cornelius Tobias (AOSIS OpenJournals, 2010)