The 12th Scientific Symposium of the Western Indian Ocean Marine Science Association (WIOMSA) took place from October 10 to 15, 2022 in Gqeberha, South Africa. Several IRD scientists and many of the Institute's partners came to participate, attend, or speak at the seminar.
WIOMSA Symposium banner
© WIOMSA
Context
Leading marine scientists and researchers are warning African governments that adopting and implementing ocean policies is critical. Marine experts from around the world gathered in Gqeberha, South Africa, October 10-15 for a symposium on the importance of cutting-edge science and innovation to support marine conservation policy decisions in Africa. Africa’s foremost meeting of minds in marine science, the 12th WIOMSA Science Symposium, brought together 954 participants, many of whom are key policy influencers from 33 countries across the African continent. The presentations and discussions contributed to global conversations on sustainable development, the blue economy and a circular economy, especially for plastics.
© WIOMSA
Such was its significance that the United Decade of Ocean Science for Sustainable Development endorsed the symposium as an official UN Ocean Decade action. "We believe that good science can be accomplished by our scientists collaborating across disciplines and co-creating knowledge across borders, across boundaries, using inclusive models that fully understand and reach local contexts." said Dr. Jacqueline Uku, Outgoing WIOMSA President. She also added that women and young scientists, in particular, would play an essential role in driving cross-sector collaboration when it came to research and policymaking. The knowledge, ideas and concepts shared at the symposium would feed into global processes, providing a unique African perspective that would benefit the entire planet.
© UN
Titled “A New Decade of Western Indian Ocean Science”, the symposium drew inspiration from the United Nations Sustainable Development Goals, the UN Decade of Ocean Science for Sustainable Development and the Decade of Ocean Restoration, as well as goals specific to the various regions. The United Nations' Ocean Decade Africa Roadmap was also launched during the event.
Dr Mika Odido, technical secretary of UNESCO’s Intergovernmental Oceanographic Commission (IOC) in Africa, said the oceans represented the next frontier for development on the continent. "The UN Ocean Decade provides an opportunity to enable us to understand the oceans and utilise them better to satisfy the requirements of mankind while also addressing the challenges facing us", he said.
According to speaker, Professor Kerry Sink, Marine Programme Manager at the South African National Biodiversity Institute, expanding marine protected areas in Africa was an important part of the equation. While the expansion was in line with the ocean economy needs, Sink added that a much broader diversity of spatial management measures would also be implemented. “Collaboration is key to agreed, well-focused priority actions,” said Sink.
IRD at the Symposium
Rodolphe de Villers and colleagues at the WIOMSA Symposium
© IRD - Rodolphe Devillers
Several IRD researchers, along with direct partners, came from France (and la Réunion), the Seychelles, Madagascar and Comoros to speak at the Symposium:
IRD researchers: Perrine Mangion, Gilbert David, Isabel Urbina-Barreto, Jean-François Ternon, Gaetan Morand, Aline Tribollet, Pascale Chabanet, Stéphanie Duvail, Herinomena Andriamasinoro, Julien Barde, Justine Daudon, Rodolphe Devillers, Florence Galletti, Dominique Hervé, Alice Marque, Francis Marsac, Pascal Mouquet, François Guilhaumon, Emilie Strady, Ludovic Hoarau
IRD direct partners (non exhaustive list): Hary-Riana Ranjalahy, Ravakiniaina Randrianatoandro, Benjamin Tsirilaza, Torres Taimo, Nassim Abdallah, Benjamin Randrianatoandro (and other colleagues from the LMI MIKAROKA), Justin Prosper, Cindy Asan, Zahara Ahmed, Herinomena Andriamasinoro, Dinis Juizo, Clemêncio Nhantumbo, Vilma Machava, Nourddine Mirhani, Georgeta Stoica, Philippe Charpentier, Marta Gentilluci
Find below the various sessions in which our scientists took part :
-
Oral presentations
10 October
Pascale Chabanet, representative IRD la Réunion Session II: Coral ecosystems: Community structures and associated organisms
"Variability Of Mesophotic Coral Ecosystems And Sessile Benthic Community Shifts Along A Depth Gradient Around Reunion Island, Southwestern Indian Ocean"
Ludovic Hoarau, Lucie Penin, Hélène Magalon, Sophie Bureau, Hendrik Sauvignet, Lionel Bigot, Emilie Boissin, Héloïse Rouzé, Priscille Labarrère, Pascale Chabanet, Mehdi Adjeroud
More information on this presentation
"Recovery Potential Of Coral Reefs In Madagascar And The Role Of Marine Reserves"
Hambinintsoa Randrianarivo Mahery, Max Gasimandova, Johanès Tsilavonarivo, Andriamanjato Razakandrainy, Jacques Phillipe, François Guilhaumon, Radonirina Lebely Botosoamananto, Lucie Penin, Gildas Todinanahary, Mehdi Adjeroud
More information on this presentation
Session III: Marine Protected Areas: Addressing management challenges
"Assessing The Long-Term Effects Of Marine Protected Areas On Poverty: A 18-year Experiment In Tanzania"
Rodolphe Devillers, Alicia Dalongeville, Sébastien Desbureaux, Julia Girard, Laure Velez, Laëticia Mathon, Loic Sanchez, David Mouillot, Narriman Jiddawi, Antoine Leblois
More information on this presentation
"Limited Benefits Of Fisheries Management In A Context Of Continued Coral Reef Degradation At Reunion Island"
Henrich Bruggemann, Lilou Audineau, Lionel Bigot, Bruce Cauvin, Pascale Chabanet, Parick Durville, Mirelle Guillaume, Thierry Mulochau, Lucie Penin, Julien Wickel, Karine Pothin
More information on this presentation
Session IV: Regional scale studies
"Non-breeding At-sea Distribution And Spatial Distribution Modelling Of The Mascarene Petrel, An Endemic Seabird Species Of Reunion Island"
Romain Fernandez, Merlène Saunier, Yahaïa Soulaimana-Mattoir, Jerôme Dubos, Patrick Pinet, François Guilhaumon, Matthieu Le Corre, Audrey Jaeger
More information on this presentation
11 October
Session VIII: Coral ecosystems: Community structures and associated organisms
"From Natural to Artificial Reefs: Using SfM Modeling To Study Coral Community Functioning And Tune Restoration Solutions In Mayotte"
Isabel Urbina-Barreto, Lionel Bigot, Anne Chauvin, Sophie Bureau, Thomas Claverie, Clément Lelabousse, Aline Tribollet, Francois Guilhaumon
More information on this presentation
Session XII: Ecosystem restoration: Innovative techniques
"Review Of Ecological Engineering Techniques In Marine Environment : Exceed Practices Or Habits To Improve Effectiveness/ Efficiency. Case Of Indian Ocean Coral Reefs"
Aurore Léocadie, Gilbert David, Sylvain Pioch, Mathieu Pinault
More information on this presentation
12 October
Session XIV: Multiple impacts on coral reefs
"Can Metatranscriptomic Sequencing Detect Human Impacts On Coral Mucus Associated Microbiota?"
Clement Mlay, Sammy Wambua, Santie de Villiers, Erik Bongcam Rudloff, Oskar Karlsson-Lindsjö
More information on this presentation
Session XV: Communities’ perceptions and their involvement
"Empowering Children To Make Informed Decisions In The SW Indian Ocean: Analysis Of The Educational Marine Areas Program"
Georgeta Stoica, Philippe Charpentier, Lola Massé, Christelle Morel, Karine Pothin, Allen Cedras, Pascale Chabanet
More information on this presentation
13 October
Session XXI: Reef fish ecology
"Monitoring Fish Post-larval Supply: Standardized Methods, Shared Identification Tools, And A Pilot Project In The Marine Protected Area Of Reunion Island"
Tévamie Rungassamy , Henitsoa Jaonalison, Jean Emilien Randrianambinitsoa, Jamal Mahafina, Dominique Ponton
More information on this presentation
"Assessment of a reef fish resource abundance index through participative monitoring in the bay of Ranobe, Southwestern Madagascar"
Andrinirina Jovial Mbony, Jacqueline Razanoelisoa, Roddy Michel Randriatsara, Sandra Ranaivomanana, Marc Leopold
More information on this presentation
Session XXVII: Innovative methodologies/techniques for research
"Remote-sensing Image Processing Chains To Improve Deeper Seafloor Feature Extraction Using Sentinel-2 Time-series Imagery In The SWIO"
Pascal Mouquet, Christophe Revillion, Rodolphe Devillers
More information on this presentation
Session XXIX: Linkages between physical, geological and biological processes
"Bio-physical Coupling At Sub-mesoscale In The Southwest Indian Ocean: The RESILIENCE Project"
Jean-François Ternon, Margaux Noyon, Pierrick Penven, Steven Herbette, Mike Roberts
-
Posters presentations
Clemêncio Nhantumbo presenting his and Dinis Juizo's poster to the Wioder team 10 october
THEME II: Coral ecosystems: Community structures and associated organisms
"Strong but declining coral recruitment rates in the region of Toliara, southwest Madagascar"
Radonirina Lebely Botosoamananto, Sarah Zerambay, Mahery Randrianarivo, Andriamanjato Razakandrainy, Pierro Jules Tsimbasafihery, Max Gasimandova, Lucie Penin, Gildas Todinanahary, Mehdi Adjeroud
Plus d'information sur cette présentation
"Identification And Quantification Of Ecological Stakes In The Internal Reef Flat Of Reunion Island According To The CORRAM Evaluation Method"
Léo Broudic, Mathieu Pinault, Tévamie Rungassamy, Romain Claud, Jérôme Suros, Lionel Bigot, Lucie Penin, Sylvain Pioch
Plus d'information sur cette présentation
"Influence Of Benthic Organisms On Coral Recruitment"
Sarah Zerambay, Lebely Radonirina Botosoamananto, Lucie Penin, Mehdi Adjeroud, Gildas Todinanahary
Plus d'information sur cette présentation
THEME VII: Estuaries and their resources
"Mapping The Socio-physical Dynamics Of The Western Indian Ocean Deltas"
Paolo Paron, Stéphanie Duvail, Dominique Herve, Dinis Juizo, Nordino Paluluane, Simon Mwansasu, Peter Gitau, Wanja Nyingi, Johary Andriambeloson
Plus d'information sur cette présentation
"Is The Betsiboka Estuary A Mangrove Sediment Filter Or A Sediment Deposit?"
Dominique Hervé, Laurent Robinson, Hary-Riana Ranjalahy, Ravikiniaina Randrianatoandro
Plus d'information sur cette présentation
THEME VIII: Human dimensions in coastal and marine management
"A Participatory Observatory In Macaneta Coastal Wetland For The Design Of Socio-environmental Flows From The Incomati River (Mozambique)"
Stéphanie Duvail, Dercio Alberto
Plus d'information sur cette présentation
THEME V: Mariculture
"Density And Fish Diet Effect On Rabbitfish Growth In Controlled Systems"
Helga Berjulie Ravelohasina, Nandrianina Maminantenaina, Bruno Frédérich, Carole Rougeot, Gilles Lepoint, Henitsoa Jaonalison, Jamal Mahafina, Richard Rasolofonirina
Plus d'information sur cette présentation
11 octobre
THEME X: Governance of coastal and marine environment
"A Case Study Of The Application Of Sustainability Science For A Better Reef Conservation, Restoration And Compensation (Mayotte, WIO)"
Aline Tribollet, François Guilhaumon, Georgeta Stoica, Philippe Charpentier, Isabel Urbina-Barreto, Anne Chauvin, Lionel Bigot, Thomas Claverie, Swanne Gontharet, Clément Lelabousse
Plus d'information sur cette présentation
THEME XI: Capacity development initiatives
"Future Maore Reefs : A New Way Of "doing And Teaching Science" In Elementary Schools. The Case Study Of Mayotte Island"
Philippe Charpentier, Georgeta Stoica, Marta Gentilucci, Anne Chauvin, Isabel Urbina-Barreto, François Guilhaumon, Aline Tribollet
Plus d'information sur cette présentation
THEME XIV: Fisheries: ecology, gears impacts and stock status
"Diversity And Origins Of Small Dried Fishes Sold In Markets Along A 1000-km Coast-to-inland Distance Gradient In Madagascar"
Léono Declerck Todimazava, Henitsoa Jaonalison, Jamal Angelot Mahafina, Dominique Ponton, Jean-Dominique Durand, Thomas Lamy
Plus d'information sur cette présentation
"Depredation Impacting The Reunion Island Pelagic Longline Fishery: An Interview-based Approach To Survey Fishers’ Perception"
Njaratiana Rabearisoa, Paul Tixier, Amel Boukherroub, Pascal Bach
Plus d'information sur cette présentation
"Fishery Characteristics And Management In The Floodplain Lakes Of Tana River Delta, Kenya"
David Ouma, Stéphanie Duvail, Olivier Hamerlynck, Dorothy Nyingi, Nathan Gichuki
Plus d'information sur cette présentation
"Assessment Of Macroinvertebrate Diversity And Catches Of Mosquito Trawl Nets In Seagrass Beds, Southwestern Madagascar"
Patricia Andrée Herinirina, Lionel Bigot, Patrick Frouin, Huguette Volandrae, Roddy Michel Randriatsara, Faustinato Behivoke, Lantoasinoro Ranivoarivelo, Marc Leopold
Plus d'information sur cette présentation
"Participatory assessment of mud crab’s fisheries indicators. The case of Morombe area, Southwestern Madagascar"
Heriniaina Stéphano Duolah Fanambinantsoa, Jacqueline Razanoelisoa, Daniel Raberinary, Marc Leopold
Plus d'information sur cette présentation
"Size Selectivity Of Mud Crab (Scylla Serrata) Hoop Nets In Madagascar"
Nicolas Jaosedy , Jérémie Ndriamihaja, Deutz Régis Zafimamatrapehy, Alexandre Leoville, Liantsoa Juliette Randrianasolo, Marc Leopold
Plus d'information sur cette présentation
"Diversity And Origins Of Small Dried Fishes Sold In Markets Along A 1000-km Coast-to-inland Distance Gradient In Madagascar"
Léono Declerck Todimazava, Henitsoa Jaonalison, Jamal Angelot Mahafina, Dominique Ponton, Jean-Dominique Durand, Thomas Lamy
Plus d'information sur cette présentation
THEME XVIII: Physical and geological processes
"An Investigation Of Sea Level And Circulation Response During A Coastal Trapped Wave Event On The Eastern Agulhas Bank, South Africa"
Dylan Bailey, Juliet Hermes, Wayne Goschen, Pierrick Penven, Thomas Bornman
Plus d'information sur cette présentation
13 octobre
THEME XX: Fish ecology and biodiversity
"Precise Identification Of Reef Fishes Caught In Toliara And Ranobe Bays, Southwestern Madagascar"
Jean Volanandiana, Anissa Jubrice, Dominique Ponton, Daniel Raberinary, Henitsoa Jaonalison , Leopold Marc, Behivoke Faustinato, Randriatsara Roddy Michel, Jean-Dominique Durand
Plus d'information sur cette présentation
"First results of reef fish spatial and temporal dynamics in the Bay of Ranobe fishery, southwestern Madagascar"
Sandra Ranaivomanana, Anissa Volanandiana, Jean-Dominique Durand, Dominique Ponton, Andrinirina Jovial Mbony, Roddy Michel Randriatsara, Gildas Todinanahary, David Die, Thierry Lavitra, Jamal Mahafina, Marc Leopold
Plus d'information sur cette présentation
"Machine Learning And Remote Sensing-based Modeling Of Fish Post-larval Supply In Madagascar And Reunion Island"
Jean Emilien Randrianambinintsoa, Jamal Mahafina, Dominique Ponton, Henitsoa Jaonalison
Plus d'information sur cette présentation
"Precise identification of reef fishes caught in Toliara and Ranobe Bays, southwestern Madagascar"
Jean Jubrice Anissa Volanandiana, Dominique Ponton, Daniel Raberinary, Henitsoa Jaonalison, Marc Leopold, Faustinato Behivoke , Roddy Michel Randriatsara, Jean-Dominique Durand
Plus d'information sur cette présentation
THEME XXI: Locally managed marine areas: Challenges and opportunities
"A Prototype Of Collaborative Observatory Of The Octopus Fishery In The Southwest Region Of Madagascar"
Roddy Michel Randriatsara, Daniel Raberinary, Jamal Angelot Mahafina, Marc Leopold
Plus d'information sur cette présentation
THEME XXV: Innovative methodologies/techniques for research
"Conception Of An Electronic Identification Key For Juvenile And Adult Stages Of Some Bony Fishes Families From Southwestern Madagascar"
Jean Emilien Randrianambinintsoa, Jean-Dominique Durand, Henitsoa Jaonalison, Nirinarisoa Lantoasinoro Ranivoarivelo, Dominique Ponton
Plus d'information sur cette présentation
"Development Story Of An Innovative Device To Mitigate Depredation"
Pascal Bach, Njaratiana Rabearisoa, Christophe Guinet
Plus d'information sur cette présentation
"GeoEnrich: A New Tool For Scientists To Painlessly Enrich Their Species Occurrence Data With Environmental Variables"
Gaetan Morand, Julien Barde
Plus d'information sur cette présentation
"Marine Ecosystem Monitoring: A New Deep Learning Application For Reef Mapping Based On A Citizen Science Framework"
Justine Daudon, Matteo Contini, Sylvain Bonhommeau, Julien Barde, Thomas Chevrier, Alexis Joly
Plus d'information sur cette présentation
THEME XXVI: Endangered species
"The Fishes Of Madagascar Include 116 Threatened Species Based On UICN Red List (2021)"
Mahafina Jamal, Ponton Dominique, Jaonalison Henitsoa
Plus d'information sur cette présentation
-
Mini Symposia - 11 October
The contribution of marine science in areas beyond national jurisdiction in the Western Indian Ocean to the development of a regional ocean governance strategy
IRD - Florence Galletti: Participants to the Mini Symposium on Marine Sciences This mini symposium will highlight how advances in oceanographic research in the Western Indian Ocean (WIO) can be used to inform aspects of a regional strategy for ocean governance, especially related to the conservation and management of biodiversity beyond national jurisdictions (BBNJ). It will provide information on a topic of regional importance, i.e. scientific information for Areas Beyond National Jurisdiction (ABNJs) of the Western Indian Ocean (WIO) riparian states, which is currently relatively limited and poorly distributed and shared. The contribution of this information to a regional strategy aimed at enhancing ocean governance in the WIO will mainly be through ensuring that the importance of maintaining marine biological diversity in a healthy condition to provide the basis for a sustainable
blue economy is highlighted and mainstreamed.
- "Environmental remote Heritage: Where, why, and how ?", Florence Galletti, Mwangi Theuri, Gilbert David, Emmanuel Tessier
- "Connectivity studies to support management strategies between Areas Beyond National Jurisdiction", Francis Marsac, Patrice Guillotreau, Jan Robinson, Juliette Lucas, Francesca Adrienne, TahaI Mzilen, David Kaplan, Estelle Crochelet
- "Towards a FAIR Management of scientific data to describe the marine environment in the ABNJs and inform multilateral strategies and actions", Julien Barde
- "Marine scientific advances on WIO investigated seamounts, banks, plateaus and structures, to be incorporated into ABNJ related arrangements and agreements?", Florence Galletti, Jean-François Ternon, Francis Marsac, Laure Corbari, Philippe Bouchet, Michael J. Roberts
- "Initiating a participatory process to build a common knowledge at a regional scale of the Indian ocean oceanic basin", Baronce, R; Bailly, D.; Pendelton, L.; Rodolphe Devillers, Antha, S.
-
Special sessions
14 October
"Good practices, key initiatives and issues for a FAIR management of marine data in the WIO region"
Julien Barde, Andriamasinoro H., Nomenisoa A.L.D, Justin Prosper
More information on this session
