Publications
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Fish spawning migration, Young-of-the-Year (YOY) fish survival, and food web modeling in Lake Tana, Ethiopia Hasselt University
Under the current anthropogenic pressures on the ecosystem, the Lake Tana fish species suffer from pollution, habitat destruction, and excessive fishing. It is crucial to develop an effective conservation and management strategy for the lake and its tributary rivers. This requires an understanding of the feeding and reproductive ecology of the fish taxa of concern, namely the species belonging to the genus Labeobarbus, which includes an endemic ...
Modelling the migration opportunities of diadromous fish species along a gradient of dissolved oxygen concentration in a European tidal watershed Research Institute for Nature and Forest
The relationship between poor water quality and migration opportunities for fish remains poorly documented, although it is an essential research step in implementing EU water legislation. In this paper, we model the environmental constraints that control the movements of anadromous and catadromous fish populations that migrate through the tidal watershed of River Scheldt, a heavily impacted river basin in Western Europe. Local populations of ...
Contrasting population genetic responses to migration barriers in two native and an invasive freshwater fish KU Leuven Research Institute for Nature and Forest
Habitat fragmentation impacts the distribution of genetic diversity and population genetic structure. Therefore, protecting the evolutionary potential of species, especially in the context of the current rate of human-induced environmental change, is an important goal. In riverine ecosystems, migration barriers affect the genetic structure of native species, while also influencing the spread of invasive species. In this study, we compare genetic ...
Individual variation in the habitat selection of upstream migrating fish near a barrier Ghent University Research Institute for Nature and Forest
BackgroundMigration is a vital element of the life cycle of many freshwater fish species but is increasingly hampered globally by riverine barriers. Fish passes are a common approach to enable migration past barriers but are often ineffective. More knowledge is required on fish behaviour as they approach barriers such as habitat preferences.MethodsWe evaluate the habitat selection of two upstream migrating fish species, barbel Barbus barbus and ...
Gut microbiota of migrating wild rabbit fish (Siganus guttatus) larvae have low spatial and temporal variability Ghent University
Connectivity between Migrating and Landlocked Populations of a Diadromous Fish Species Investigated Using Otolith Microchemistry Vrije Universiteit Brussel
Smelt Osmerus eperlanus has two different life history strategies in the Netherlands. The migrating population inhabits the Wadden Sea and spawns in freshwater areas. After the closure of the Afsluitdijk in 1932, part of the smelt population became landlocked. The fresh water smelt population has been in severe decline since 1990, and has strongly negatively impacted the numbers of piscivorous water birds relying on smelt as their main prey. The ...
Spatio-temporal analysis of fish behaviour : lessons learnt to stimulate fish passage Ghent University
Obstacles like weirs, watermills and locks are barriers for migratory fish. The fact that specific fish species cannot reach their optimal spawning habitat can have severe consequences for the survival of these species. While numerous fish passage types have been designed to solve this problem, these are sometimes not efficient. More insight into fish behavior is needed to improve fish pass efficiency, and acoustic telemetry allows such detailed ...
Individual based models for the simulation of fish movement near barriers : Current work and future directions Ghent University Research Institute for Nature and Forest
River fragmentation is an increasing issue for water managers and conservationists. Barriers such as dams interfere with freshwater fish migration, leading to drastic population declines. While there are a range of widely implemented mitigation approaches, e.g. fish passes, such measures are often inefficient due to suboptimal operation and design. There is increasing need to be able to assess mitigation options prior to implementation. ...
Trash racks and fish diversion screens: literature Study and workedout examples Flanders Hydraulics
The first part of this work is an explorative review of the state-of-practice regarding the dimensioning of trash racks in culverts and pump/turbine intakes. A historic review of the use of trash racks in channels, their types, the classification of debris and the processes that produce debris, are explained. Relevant methodologies for the prediction of yearly amounts of debris, and for the dimensioning of the trash screens, bar dimensions, and ...