Céline Hanzen

Céline Hanzen
Biotope Environnement

Doctor of Philosophy
Project manager for aquatic ecosystems

About

11
Publications
4,993
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80
Citations
Introduction
Aquatic ecologist by training with a degree from the University of Liège, I am a project manager for aquatic environments at Biotope Environnement in Belgium. I obtained my PhD at the University of KwaZulu-Natal (South Africa). I specialize in the ecology and conservation of fish and issues regarding ecological connectivity, water resources, and fisheries management.
Additional affiliations
July 2014 - July 2015
Education
June 2016 - March 2020
University of KwaZulu-Natal
Field of study
  • Ecological sciences (aquatic ecology)
September 2011 - September 2012
University of Liège
Field of study
  • Environmental sciences and management in developping countries
September 2009 - September 2011
University of Liège
Field of study
  • Organism biology and ecology

Publications

Publications (11)
Article
Full-text available
Four anguillid eel species occur in the western Indian Ocean rivers of Africa: Anguilla bengalensis, Anguilla bicolor, Anguilla marmorata and Anguilla mossambica. These catadromous fishes face multiple stressors, including habitat alteration and deterioration, barriers to migration, pollution and the adverse impacts of alien species, but knowledge...
Article
Full-text available
Within South Africa, the St. Lucia Basin, comprising the White Mfolozi, Black Mfolozi, Mfolozi Hluhluwe-Mkuze sub-basins, is an ecologically important region. However, the river ecosystems and their inherent biota, especially the ichthyofauna, are inadequately studied. Considering the anthropogenic land-use change currently occurring and the concom...
Article
Full-text available
Little is documented on the population demographics and morphometrics of wild freshwater turtles (hereafter terrapins) in South Africa. From February 2016 to October 2019, we trapped and recorded morphometric and biological data for serrated hinged terrapins Pelusios sinuatus (n = 97) and marsh terrapins Pelomedusa galeata (n = 51) in KwaZulu-Natal...
Article
Full-text available
Four freshwater eel species (Anguilla spp.) occur in southern African rivers that are increasingly anthropogenically modified. Information on movements, habitat use and overlap by African eels is needed for their conservation. We carried out a preliminary investigation of the spatial ecology of three eel species in the Thukela River, South Africa,...
Article
Full-text available
Anguillid eels are found globally in fresh, transitional and saline waters and have played an important role in human life for centuries. The population status of several species is now of significant concern. The threats to populations include direct exploitation at different life stages, blockages to migratory routes by dams and other structures,...
Article
Studies have reported poor survival of surgically‐tagged freshwater fishes in warm African waters. This study aimed to assess the applicability of using radio telemetry (and surgical implantation of tags) for Anguilla spp. Nineteen yellow eels (Anguilla bengalensis, A. marmorata and A. mossambica) were surgically implanted with radio tags between O...
Article
Freshwater eels (Anguilla spp.) have a long and complex catadromous life cycle. This unique feature, coupled with difficulty in separating species based on morphology, makes them complex targets for conservation. In this study we evaluated the utility of DNA barcoding using cytochrome oxidase I (COI) to delimit the four species of African eels foun...
Article
Full-text available
People throughout the world depend on the services we derive from freshwater ecosystems. Human land-use activities often affect the quality, quantity and habitat of freshwater ecosystem, which need to be carefully managed to ensure their integrity and provision of services is sustainable. In South Africa, legislation has established resource-direct...
Article
Full-text available
The long-lived greater flamingo (Phoenicopterus roseus) is famous for performing conspicuous group displays during which adults try to acquire a new mate each year with varying success. We examined variation in the sexual display complexity (SDC) of wild flamingos aged between 4 and 37 yrs. SDC was defined as the product of richness (the number of...
Article
Full-text available
The decline of the patrimonial rheophilic nase, Chondrostoma nasus (Linnaeus, 1758) populations was mainly caused by construction of dams and hydroelectric power-plants, together with the straightening and artificialization of the river banks and water pollution. In this study, we tested the hypothesis whether the translo-cation of few adult nase i...

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Projects

Projects (3)
Project
• Evaluate water quality, flows and habitat alterations of the Thukela River and Estuary associated with the LTBWSS and the impact of these changes to the wellbeing of the local river and estuary ecosystem, using fish, invertebrates and plants as ecological indicators, and • Evaluate the use of the fishway by fish and invertebrates and characterisation of the efficiency of the facility and any possible optimisation opportunities and or risks to the migration of ecological important organisms in the region. • Develop an environmental performance framework for the management and monitoring of the LTBWSS and performance of the LTBWSS fishway.
Project
The objectives of the project include; (1) a synthesis and review of existing knowledge regarding the biology, ecology, use and threats of eels in the WIO, (2) characterise the recruitment and escapement ecology in selected estuaries throughout the WIO, (3) evaluate the contribution of eels to local fisheries and livelihood and finally (4) undertake a regional scale ecological risk assessment of multiple stressors affecting populations that includes recommendations for sustainable management and conservation. We will adopt a multi-disciplinary (ecological surveys and socio-economic and cultural aspects) and multi-country approach, this will include the realisation of our objectives in selected estuaries in South Africa, Mozambique and Kenya.
Project
My PhD project aims to address the gap in our understanding of freshwater eels in South Africa by generating information regarding their distribution, population diversity and wellbeing as well as promoting biodiversity and river conservation for the benefit of all users.