David Guyomard

David Guyomard
Centre Sécurité Requin (Shark Security Centre) Reunion Island, France

PhD

About

33
Publications
10,868
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138
Citations

Publications

Publications (33)
Article
Full-text available
Oceanic islands are productive ecosystems, and so have higher densities of many marine predators. We investigated the dynamics of elasmobranch and teleost predators in coastal waters off Réunion Island, Indian Ocean, using fisheries-independent data from a preventative shark fishing program from January 2014 to December 2019. We developed a moonlig...
Article
Marine spatial planning (MSP), a process aimed at negotiating the spatial allocation of human activities at sea, has to integrate new challenges arising from growing human activities and their impacts on threatened marine ecosystems. Yet, human–wildlife interactions that result in threat to humans are rarely explicitly addressed in planning and alm...
Article
Following a series of shark attacks, local authorities in Reunion Island developed an experimental shark control programme using innovative fishing gear, namely Shark Management Alert in Real Time (SMART) drumlines (SDL). From January to November 2014, four SDL were deployed 24 h per day, four days per week to target bull (Carcharhinus leucas) and...
Article
In response to a spate of shark attacks in Reunion Island in the southwest Indian Ocean since 2011, local authorities developed an experimental shark-control program based on those conducted for decades in Australia and South Africa. In order to greatly reduce, if not eliminate, the impact of such a shark fishing program on bycatch and undersized t...
Conference Paper
Shark attacks always happened in Reunion Island but became more frequent since 2011, leading to security problems with socio-economic consequences. The French government with local authorities and European funding implemented a global shark risk management plan to reducing the shark risk encounter while conserving the biodiversity, economical and r...
Conference Paper
Full-text available
Due to the narrow island shelf, large predatory pelagic fish became the main resources for traditional fisheries with the deployment of anchored Fish Aggregating Devices (FADs) in the 90’s at La Reunion Island, a small volcanic island in the South-Western Indian Ocean. After a decade of increase, catches decreased rapidly after 2005 while the fishi...
Article
Full-text available
A fisheriesindependent survey using longlines and drumlines, and an acoustic telemetry study, revealed that bull sharks Carcharhinus leucas and tiger sharks Galeocerdo cuvier occur throughout the year off the west coast of Reunion Island. The research, which commenced in 2011, was conducted in response to an increase in the rate of shark attacks. J...
Article
Despite the large number of studies on fish populations of coral reef areas of Reunion Island during the past forty years, the bicolor anthias Pseudanthias bicolor (Randall, 1979), previously recorded from Mauritius and the Maldives in the Indian Ocean, was never observed on the coral reefs of the island. Recently, two specimens of this species wer...
Data
Full-text available
Article
Full-text available
Despite the large number of studies on fish populations of coral reef areas of Reunion during the past forty years, the bicolor anthias Pseudanthias bicolor (Randall, 1979), previously recorded from Mauritius and the Maldives in the Indian Ocean, has never been observed on the coral reefs of the island. However, two specimens of this species were p...
Conference Paper
Full-text available
The recent shark attacks along the west coast of Reunion Island has led several research and management projects to evolve jointly. In the frame of the “CHARC” programme, more than 80 large sharks (bull and tiger) have been tagged for studies on their behaviour and habitats along the coast of Reunion Island since 2011. In the frame of the project “...
Technical Report
Full-text available
Reconnus dans toute la zone intertropicale comme outils d'aménagement incontournables des petites pêches côtières, les DCP (Dispositifs de Concentration de Poissons) ont été implantés autour de La Réunion à partir de 1988 et gérés collectivement par le Comité Régional des Pêches. Ces DCP côtiers, ancrés à quelques milles des ports de pêche ont perm...
Article
Full-text available
The tiger shark Galeocerdo cuvier is a common predator in tropical oceans although its biology is still not well documented, especially in the western Indian Ocean. We report the first observation of a pregnant tiger shark captured at Reunion Island in November 2012. A total of 42 embryos without external yolksacs, measuring 750-846 mm in total len...
Poster
Full-text available
Artificial reefs as a tool to supply artisanal fishery in Reunion Island: Implementation and scientific evaluation
Conference Paper
Full-text available
This article deals with the Reunion Island based longline fishery, targeting mainly swordfish (Xiphias gladius) for almost 15 years, operating by night with very straight lines thus attaining quite shallow waters. During the PPR programme, jointly led by the Ifremer, IRD and University of La Reunion, a rigorous data collecting strategy has reached...
Article
Full-text available
The Réunion fishery has experienced rapid growth and development in all segments (artisan fishery, Antarctic deep sea fishery, longline fishery) for the last five years, in marked contrast to the situation experienced by the huge majority of other European Union fishing communities. The longlining sector, which began five years ago, has shown the m...
Article
Full-text available
Un nouveau programme scientifique, a débuté depuis mois de juillet 1998, le « Programme scientifique et technique d'accompagnement au développement de la pêcherie hauturière des grands pélagiques à La Réunion » aussi appelé « programme palangre Réunion » (PPR), sous l'initiative de l'lFREMER en collaboration étroite avec la majorité des armements l...
Article
Full-text available
During the last five years, the local swordfish (Xiphias gladius) longline fishery has experienced rapid growth and development. The longline catches reached more than 2,300 t in 1997. Responsibility for collecting data on Réunion fisheries for submission to FAO lies with the local fisheries office "Direction Départementale des Affaires Maritimes"...
Article
Full-text available
Long-line fishing has been growing on the island of La Réunion since the beginning of the 1990s. The target species is the swordfish (Xiphias gladius), fished mainly in the tropical waters surrounding the island between longitudes 45 degree E and 60 degree E, and latitudes 17 degree S and 27 degree S. From 1998 to 2000, a finalised research program...

Projects

Projects (2)
Project
Improve knowledge on preventive shark control fishing for a better understanding of the underlying ecological processes, in order to maximize its efficiency in terms of shark attack mitigation and minimize its ecological detrimental impact