Browsing Research Output by Author "3380ac51-f74c-47ac-a23f-2b3d7b1ce3cb"
Now showing items 1-20 of 22
-
Adult dragonflies are indicators of environmental metallic elements
Lesch, Velesia; Bouwman, Hindrik (Elsevier, 2018)Adult dragonflies (Insecta; Odonata) are aerial predatory arthropods that occur globally except in the polar regions. However, we know of no research on adult dragonflies as potential indicators of metallic elements in the ... -
An 11-digit identification system for individual Nile crocodiles using natural markings
Bouwman, Hindrik; Cronje, Enrico (AOSIS, 2016)Research and conservation of wild crocodiles and husbandry of captive crocodiles requires the reliable identification of individuals. We present a method using the individual colour markings on the first 10 single-crest ... -
Challenges and emerging solutions to the land-based plastic waste issue in Africa
Jambeck, Jenna; Bouwman, Hindrik; Hardesty, Britta Denise; Brooks, Amy L.; Friend, Tessa (Elsevier, 2018)In recent years, there has been a tremendous increase in work that focuses on the amount and types of waste entering the marine environment from multiple geographies around the world. To date, however, there are few reports ... -
Chlorinated, brominated, and fluorinated organic pollutants in Nile crocodile eggs from the Kruger National Park, South Africa
Bouwman, Hindrik; Booyens, Paul; Govender, Danny; Pienaar, Danie; Polder, Anuschka (Elsevier, 2014)Repeated annual episodes of Nile crocodile deaths in two isolated areas of the Kruger National Park prompted the investigation of possible organohalogen pollutant involvement. Crocodile eggs were collected close to one of ... -
Comparison of the lipid composition of three adipose tissue types of male and female wild nile crocodiles (Crocodylus niloticus)
Osthoff, Gernot; Hugo, Arno; Govender, Danny; Huchzermeyer, Fritz; Bouwman, Hindrik (Taylor & Francis, 2014)We describe and compare the fatty acid composition of three different adipose tissue types, namely, abdominal, tail, and steatotheca (an abdominal fat body) tissues of healthy wild Nile Crocodiles (Crocodylus niloticus). ... -
Concentrations of metallic elements in kidney, liver, and lung tissue of Indo-Pacific bottlenose dolphin Tursiops aduncus from coastal waters of Zanzibar, Tanzania
Mapunda, Edgar C.; Bouwman, Hindrik; Othman, Othman C.; Akwilapo, Leonard D.; Mwevura, Haji (Elsevier, 2017)Concentrations of metallic elements in kidney, liver and lung tissues of Indo-Pacific bottlenose dolphins Tursiops aduncus from coastal waters of Zanzibar were determined using inductively coupled plasma – optical emission ... -
Conflicting traffic: characterization of the hazards of birds flying across an airport runway
Viljoen, Ignatius M.; Bouwman, Hindrik (Wiley, 2016)Bird–aircraft collisions cost millions of dollars to aviation globally and cause deaths. We designed and tested a protocol to study the hazards to aircraft from birds flying across runways where aircraft rotate and climb ... -
DDT exposure of frogs: a case study from Limpopo Province, South Africa
Viljoen, Ignatius M.; Bornman, Riana; Bouwman, Hindrik (Elsevier, 2016)Amphibians are globally under pressure with environmental contaminants contributing to this. Despite caution aired more than 80 years ago of threats posed to amphibians by DDT spraying for disease vector control, no data ... -
Do the contour feathers of Cisticolae exhibit adaptations to annual rainfall in their habitats?
Klem, Jana le Roux; Bouwman, Hindrik; Rijke, Arie M. (Wiley, 2019)Birds of the genus Cisticola occur over most of Southern Africa in varying habitats ranging from low to high altitudes and wet to dry areas causing species to have unique distributions. In order to determine if Cisticolas ... -
Endocrine disruptors and health effects in Africa: a call for action
Bornman, Maria S.; Bouwman, Hindrik; Aneck-Hahm, Natalie H.; De Jager, Christiaan; Wagenaar, Gesina M. (NIEHS, 2017)Background: Africa faces a number of unique environmental challenges. Unfortunately, it lacks the infrastructure needed to support the comprehensive environmental studies that could provide the scientific basis to inform ... -
First report of perfluoroalkyl substances in South African Odonata
Lesch, Velesia; Bouwman, Hindrik; Kinoshita, Ayako; Shibata, Yasuyuki (Elsevier, 2017)Perfluorinated substances are global and ubiquitous pollutants. However, very little is known about these substances in invertebrates, and even less in terrestrial invertebrates in particular. We analysed adult male ... -
The flip-or-flop boutique: marine debris on the shores of St Brandon's rock, an isolated tropical atoll in the Indian Ocean
Bouwman, Hindrik; Evans, Steven W.; Kylin, Henrik; Cole, Nik (Elsevier, 2016)Isolated coral atolls are not immune from marine debris accumulation. We identified Southeast Asia, the Indian sub-continent, and the countries on the Arabian Sea as most probable source areas of 50 000 items on the shores ... -
Halogenated and organophosphorus flame retardants in cetaceans from the southwestern Indian Ocean
Aznar-Alemany, Oscar; Bouwman, Hindrik; Sala, Berta; Plön, Stephanie; Barceló, Damià (Elsevier, 2019)PBDEs, HBCD, DBDPE, PBEB and HBB, dechloranes and OPFRs, as well as natural MeO-PBDEs were monitored in muscle tissue of three dolphin species from the southwestern Indian Ocean (Delphinus delphis, Sousa plumbea and Tursiops ... -
Halogenated natural products and anthropogenic persistent organic pollutants in chokka squid (Loligo reynaudii) from three sites along the South Atlantic and Indian Ocean coasts of South Africa
Wu, Qiong; Bouwman, Hindrik; Uren, Ryan C.; Van der Lingen, Carl D.; Vetter, Walter (Elsevier, 2019)Chokka squid (Loligo reynaudii) from three sites along the South African coast were analyzed for halogenated natural products (HNPs) and anthropogenic persistent organic pollutants (POPs). HNPs were generally more than one ... -
Heavy metals in muscle tissue of healthy crocodiles from the Kruger National Park, South Africa
Du Preez, Marinus; Bouwman, Hindrik; Govender, Danny (Wiley, 2016)Mass mortality of Nile crocodile (Crocodylus niloticus) occurred in the Olifants River of the Kruger National Park (KNP) in 2008 from pansteatitis, a condition in which body fat becomes yellow and inflamed. Much research ... -
Imposex assessment and tributyltin levels in sediments along the Atlantic coast of South Africa
Van Gessellen, Nicole; Bouwman, Hindrik; Averbuj, Andres (Elsevier, 2018)Female marine gastropods develop imposex (growth of penis/vas deferens) when exposed to TBT (tributyltin). Ours, is the first report of an imposex survey associated with TBT in sediment along 920 km of South Africa's ... -
Marine and freshwater microplastic research in South Africa
Verster, Carina; Minnaar, Karin; Bouwman, Hindrik (Wiley, 2017)South Africa has a vibrant plastics manufacturing industry, but recycling is limited and insufficient with a notable proportion of the unmanaged waste entering the environment. South Africa is a developing country with ... -
Metal concentrations in corals from South Africa and the Mascarene Basin: a first assessment for the Western Indian Ocean
Van der Schyff, Veronica; Bouwman, Hindrik; Yive, N.S.C.K. (Elsevier, 2019)Little knowledge exists on the state of metal contamination in corals from the Western Indian Ocean (WIO). Fragments of four soft and five hard coral genera were collected from five sites in the WIO– Sodwana Bay and Aliwal ... -
Metallic elements in Nile Crocodile eggs from the Kruger National Park, South Africa
Du Preez, Marinus; Kylin, Henrik; Bouwman, Hindrik; Govender, Danny (Elsevier, 2018)The Nile Crocodile is the largest predator on the African continent. Recent mass mortalities in the Kruger National Park (KNP) raised concerns about possible influence of pollution. We analysed eggs and their eggshells ... -
Polycyclic aromatic hydrocarbons (PAHs) in sediments from a typical urban impacted river: application of a comprehensive risk assessment
Pheiffer, Wihan; Bouwman, Hindrik; Smit, Nico J.; Pieters, Rialet; Quinn, Laura P. (Springer, 2018)Soweto and Lenasia, the most densely populated area of South Africa, is simultaneously a thriving metropolis, with a fair share of people still living in squalor conditions directly dependant on the natural resources. ...