26 results on '"Sohou, Z."'
Search Results
2. Response of the Equatorial Atlantic Cold Tongue to Stratospheric Aerosol Geoengineering
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Pomalegni, Y. W., Da-Allada, C. Y., Sohou, Z., Baloïtcha, E., Alamou, E. A., Awo, F. M., Bonou, F., Biao, I., Obada, E., Zandagba, J. E., Tilmes, S., and Irvine, P. J.
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- 2022
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3. Seasonal and inter-annual ONSET Sea Surface Temperature variability along the northern coast of the Gulf of Guinea
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Sohou, Z., Koné, V., Da-Allada, Y.C., Djakouré, S., Bourlès, B., Racape, V., Degbe, G., and Adje, C.
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- 2020
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4. FIRST RECORD OF POLYMIXIA NOBILIS LOWE, 1836 IN BENIN CONTINENTAL SHELF (GULF OF GUINEA)
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Sohou, Z. and Okpeitcha, O.
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Benin ,Polymixia nobilis ,Continental shelf ,New record - Abstract
Two specimens of the fish species stout beardfish (Polymixia nobilis) were collected from the fishermen catch at Cotonou Port in Benin. The current report represents the first record of Polymixia nobilis in Benin continental shelf. Nethertheless they found it in Sierra Leone. FAO not yet mentioned in Gulf Of Guinea biodiversity till to now. From this time to now no more specimen was collected., {"references":["1.\tDelgado, J. 2007. Ictiofauna Demersal das Zonas Sublitotal e Batial Superior do Arquipélago da Madeira. Um Estudo Biológico e Ecológico. Universidade da Madeira.","2.\tFarias, C., Canoura, J. & Gil, J., 2007. First record of Polymixia nobilis (Polymixiformes: Polymixiidae) close to the Strait of Gibraltar (south - western Spain). J. Mar. Biol. Assoc. U. K. 87 (6), 1791 - 1792.","3.\tFishNet 2 Portal. 2013. FishNet 2 Portal. Available at: http://www.fishnet2.net/.","4.\tFock, H., Uiblein, F., Koster, F. and von Westernhagen, H. 2002. Biodiversity and species-environment relationships of the demersal fish assemblage at the Great Meteor Seamount (subtropical NE Atlantic), sampled by different trawls. Marine Biology 141: 185-199.","5.\tGarcia-Mederos, A.M., V.M. Tuset, J.I. Santana and J.A. Gonzalez, 2010. Reproduction, growth and feeding habits of stout beardfish Polymixia nobilis (Polymixiidae) off the Canary Islands (NE Atlantic). J. Appl. Ichthyol. 26: 872-880.","6.\tIUCN. 2015. The IUCN Red List of Threatened Species. Version 2015-4. Available at: www.iucnredlist.org. (Accessed: 19 November 2015).","7.\tMenezes, G. 2003. Demersal Fish Assemblages in the Atlantic Archipelagos of the Azores, Madeira and Cape Verde. Oceanography and Fisheries Department, University of Azores.","8.\tMenezes, G.M., Tariche, O., Pinho, M.R., Duarte, P.N., Fernandes, A. and Aboim, M.A. 2004. Annotated list of fishes caught by the R/V ARQUIPÉLAGO off the Cape Verde archipelago. Arquipelago - Life and Marine Sciences 21(A): 57-61.","9.\tMatos-Caraballo, D., Cartagena-Haddock, M. and Pena-Alvarado, N. 2005. By-catch study of the Puerto Rico's marine commercial fisheries. Proceedings of the Gulf and Caribbean Fisheries Institute 58: 139.","10.\tMoore, J.A. 2002. Order Polymixiiformes. In: K.E. Carpenter (ed.), The Living Marine Resources of the Western Central Atlantic, pp. 960–962. FAO, Rome.","11.\tPakhorukov, N.P. 2008. Visual observations of fish from seamounts of the southern Azores region (the Atlantic Ocean). Journal of Ichthyology 48(1): 114–123.","12.\tRamos, A., Fernandez, L. and Salmeron. F. 2001. Composition of demersal fish assemblages in deepwaters of the Western Guinean Gulf. In: Northwest Atlantic Fisheries Organization (ed.), Scientific Council Meeting - September 2001.","13.\tRico, V., Lorenzo, J.M., Gonzalez, J.A., Krug, H.M., Mendonca, A., Gouveia, E. and Wieber, K.S. 2008. Habitat associations of demersal fishes on the Charleston Bump and adjacent Black Plateau. Biology, University of Charleston.","14.\tSchneider W., 1990. Field Guide to the Commercial Marine Resources of the Gulf of Guinea. 26 p."]}
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- 2022
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5. Characteristics and sociocultural impacts of small pelagic fishing by migrant fishers in Benin, West Africa
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Ahouansou Montcho, S, Salako, KV, Chadare, FJ, Gnansounou, SC, Sohou, Z, Failler, P, Glèlè Kakaï, R, and Assogbadjo, AE
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Coastal artisanal fishing ,fishing gear ,fishmongers ,focus group discussions ,Ghanaian fishers ,small-scale fishing ,value chain - Abstract
Small pelagic fish species contribute substantially to the food security and livelihoods of local communities in developing countries. In West Africa, and particularly in Benin, small pelagic fisheries attract many migrant fishers who are key actors in the sector. This study assessed the characteristics and sociocultural impacts of the small pelagic fishery in Benin using qualitative approaches, including focus group discussions (n = 9), in-depth interviews (n = 35), a literature review, direct observations and secondary data. The findings showed that indigenous fishers from Benin and foreign fishers from Ghana are the two major groups of migrant fishers involved in small pelagic fishing in Benin. These fishers mostly use three categories of fishing gear: gillnets, seine nets, and hooks and lines. Over the period 2014–2018 the annual catch fluctuated between 1 123 and 2 040 tonnes, with the peak catch recorded in 2018, with a commercial value of €3 030 587. Apart from migrant fishers, fishmongers constitute another important pillar of the value chain. Conflicts among migrant fishers in the sector in Benin are related to landing fees and fishing gears. We discuss the urgent need to give attention to the sector through quantitative research and law enforcement to ensure its sustainability.
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- 2022
6. African Coastal Camera Network: Monitoring Ocean, Climate, and Human Impacts
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Abessolo, G. O., primary, Almar, R., additional, Angnuureng, D. B., additional, Bonou, F., additional, Sohou, Z., additional, Camara, I., additional, Diouf, A., additional, Alory, G., additional, Onguéné, R., additional, Mama, A. C., additional, Cissé, C. O. T., additional, Sy, B. A., additional, Sakho, I., additional, Djakouré, S., additional, Yao, S., additional, Tano, A. R., additional, Bergsma, E. W.J., additional, and Dada, O. A., additional
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- 2022
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7. Toward the widespread application of low-cost technologies in coastal ocean observing (Internet of Things for the Ocean)
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Marcelli, M., Piermattei, V., Gerin, R., Brunetti, F., Pietrosemoli, E., Addo, S., Boudaya, L., Coleman, R., Nubi, Q. A., Rick, Johannes, Sarker, Subrata, Sohou, Z., Zennaro, M., Wiltshire, Karen Helen, Crise, A., Marcelli, M., Piermattei, V., Gerin, R., Brunetti, F., Pietrosemoli, E., Addo, S., Boudaya, L., Coleman, R., Nubi, Q. A., Rick, Johannes, Sarker, Subrata, Sohou, Z., Zennaro, M., Wiltshire, Karen Helen, and Crise, A.
- Abstract
The ability to access user-friendly, low-cost instrumentation remains a limiting factor in coastal ocean observing. The majority of currently available marine observation equipment is difficult to deploy, costly to operate, and requires specific technical skills. Moreover, a harmonized observation program for the world’s coastal waters has not yet been established despite the efforts of the global ocean organizations. Global observational systems are mainly focused on open ocean waters and do not include coastal and shelf areas, where models and satellites require large data sets for their calibration and validation. Fortunately, recent technological advances have created opportunities to improve sensors, platforms, and communications that will enable a step-change in coastal ocean observing, which will be driven by a decreasing cost of the components, the availability of cheap housing, low-cost controller/data loggers based on embedded systems, and low/no subscription costs for LPWAN communication systems. Considering the above necessities and opportunities, POGO’s OpenMODs project identified a series of general needs/requirements to be met in an Open science development framework. In order to satisfy monitoring and research necessities, the sensors to be implemented must be easily interfaced with the data acquisition and transmission system, as well as compliant with accuracy and stability requirements. Here we propose an approach to co-design a cost-effective observing modular instrument architecture based on available low-cost measurement and data transmission technologies, able to be mounted/operated on various platforms. This instrument can fit the needs of a large community that includes scientific research (including those in developing countries), non-scientific stakeholders, and educator
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- 2021
8. Impact du changement global sur les systèmes lagunaires en Afrique de l'Ouest : le cas du lac Nokoué au Bénin
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Chaigneau, Alexis, Stieglitz, Thomas Christian, Okpeitcha, V., Assogba, A., Sohou, Z., Peugeot, Christophe, Morel, Y., Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Collège de France (CdF (institution))-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD), Hydrosciences Montpellier (HSM), and Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Recherche pour le Développement (IRD)
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[SDV.EE]Life Sciences [q-bio]/Ecology, environment ,AFRIQUE DE L'OUEST ,[SDV.SA.STP]Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of fishery ,BENIN ,[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology - Published
- 2020
9. OpenMODs project: advancing toward the widespread application of low-cost technologies in coastal ocean observing.
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Marcelli, M., Addo, S., Boudaya, L., Brunetti, F., Coleman, R., Gerin, R., Olubunmi, N.A., Piermattei, V., Pietrosemoli, E., Rick, Johannes, Sarker, Subrata, Sohou, Z., Zennaro, M., Wiltshire, Karen Helen, Crise, A., Marcelli, M., Addo, S., Boudaya, L., Brunetti, F., Coleman, R., Gerin, R., Olubunmi, N.A., Piermattei, V., Pietrosemoli, E., Rick, Johannes, Sarker, Subrata, Sohou, Z., Zennaro, M., Wiltshire, Karen Helen, and Crise, A.
- Published
- 2019
10. Sea Level at the Coast from Video-Sensed Waves: Comparison to Tidal Gauges and Satellite Altimetry
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Ondoa, G. Abessolo, primary, Almar, R., additional, Castelle, B., additional, Testut, L., additional, Léger, F., additional, Sohou, Z., additional, Bonou, F., additional, Bergsma, E. W. J., additional, Meyssignac, B., additional, and Larson, M., additional
- Published
- 2019
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11. International conference ICAWA 2016 : extended book of abstract : the AWA project : ecosystem approach to the management of fisheries and the marine environment in West African waters
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Tomety, F.S., Penhoat, Yves du, Sohou, Z., Degbe, C.G., Adje, C., Brehmer, Patrice (ed.), Ba, B. (ed.), and Kraus, G. (ed.)
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Benin, like most African countries, is exposed to disasters due to climate risks. This includes strong winds, late and intense rains, floods and episodic ocean events including extreme swells. The latter accentuate the phenomenon of erosion and result in material damage along the coast. In order to limit damage and destruction caused by climatic variations and extreme events, the Climate Information Strengthening Project and the Early Warning System in Africa (SAP Benin) were set up in 2013. It is in the framework of this project that in December 2015, the IRHOB (Institute of Fisheries and Oceanic Research of Benin) received an oceanographic buoy (buoy Alizée) and installed it about 6km offshore of the port of Cotonou. The data of the buoy are sent by radio waves to the premises of the IRHOB and are analyzed in order to characterize the temporal variability of the wave, wind and current parameters. The analysis of the wave parameters allowed us to give a statistical assessment of the state of the sea in the region and to identify the strong events during the period from December 2015 to October 2016. These combined with the high tides have led to marine flooding.
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- 2017
12. International conference ICAWA 2016 : extended book of abstract : the AWA project : ecosystem approach to the management of fisheries and the marine environment in West African waters
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Brehmer, Patrice, Schmidt, J., Mbaye, A., Ba, Aliou, Diankha, O., Bamy, I.L., Silva, O., Nahada, V., Taleb, A., Kouasi, A.M., Sohou, Z., Faraj, A., Fall, M., Brehmer, Patrice (ed.), Ba, B. (ed.), and Kraus, G. (ed.)
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Data collection in fisheries and environmental sciences all over the world remain often difficult and expensive and particularly in low income countries as it is the case in West Africa. The national fisheries center have a regal mission to collect fisheries data and all other information relative to the marine environment. For such purpose all the fisheries center get numerous agents spread all along the coastline in the main national landing sites. The smartphone now get an impressive processing capacity and thus can do numerous tasks which were before limited to computer users, but also allow mobility in the field. The application developed for smartphone can now be easily developed and even delivered in open access. To take advantage of such technological progress well assimilated in West Africa (smartphone are now usual in West Africa) we have make some trials. The main interest of smartphone appear to be the data acquisition, monitoring and transfer (e.g ODK application) in near real time particularly for regular fisheries statistics in main landing sites and field interviews. Such method avoid errors during manual data acquisition and allow fast analysis. A side several of information have been collected during the trials as medusa and algal blooms, and stranding of fish or mammal as whales as well as turtle egg-laying but also extreme event as coastal erosion after a storm (e.g. ravage application; Cerema). These information/reports take advantage of spatial localization using GPS option. Obviously, fish species identification during data collection could be validated with remote expert and e.g. INRH have already developed an application (Guide des poissons du Maroc) for fish identification of main exploited fish species. Moreover, the fisheries center agents can inform on fishing interferences as well as illegal activities. We recommend the equipment of the fisheries agents with the development of regional ad hoc applications and procedures of data collection knowing that numerous others new applications of great interest for fisheries center in West Africa, will be found. Lastly, the smartphone can be associated to physic and chemical sensors to allow to upload and transfer data to the research center data center at low cost, quickly and foster collaborative action with civil society.
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- 2017
13. International conference ICAWA 2016 : extended book of abstract : the AWA project : ecosystem approach to the management of fisheries and the marine environment in West African waters
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Brehmer, Patrice (ed.), Ba, B. (ed.), Kraus, G. (ed.), Gomez, M.M. (collab.), Diogoul, N. (collab.), Sow, B.A. (collab.), Lazar, A. (collab.), Fock, H. (collab.), Capet, X. (collab.), Kouassi, A.M. (collab.), Bamy, I.L. (collab.), Silva, O. (collab.), Machu, Eric (collab.), Kone, V. (collab.), Deme, M. (collab.), Jouffre, Didier (collab.), Schmidt, J. (collab.), Thiaw, M. (collab.), Traore, S. (collab.), Diop, A. (collab.), Dossa, J. (collab.), Diallo, I. (collab.), Comolet, A. (collab.), Sohou, Z. (collab.), Diadhou, H. (collab.), Ble, E. (collab.), Almar, Rafaël (collab.), Sall, M. (collab.), Bamba, A. (collab.), Roelvink, D.J.A. (collab.), Ly, I. (collab.), Bonnin, Marie (collab.), Traore, D.B. (collab.), Mbaye, A. (collab.), Fall. H.D. (collab.), and Soueilim, M. (collab.)
- Published
- 2017
14. International conference ICAWA 2015 : extended book of abstract : the AWA project : ecosystem approach to the management of fisheries and the marine environment in West African waters
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Camara, M.L., Jouffre, Didier, Ndiaye, P., Diallo, I., Soumah, M., Khairdine, M.A., Sohou, Z., Okpeitcha, V.O., Brehmer, Patrice (ed.), Ba, B. (ed.), Kraus, G. (ed.), Gomez, M.M. (collab.), Diogoul, N. (collab.), Brandt, P. (collab.), Sow, B.A. (collab.), Lazar, A. (collab.), Capet, X. (collab.), Fock, H. (collab.), Machu, Eric (collab.), Diadihou, H.D. (collab.), Jouffre, Didier (collab.), Diallo, I. (collab.), Schmidt, J. (collab.), Ekau, W. (collab.), Gaye, A. (collab.), Ould Taleb Sidi, M. (collab.), Thiaw, M. (collab.), Diop, C.A. (collab.), Mbaye, A. (collab.), Gouriou, Yves (collab.), Traore, D.B. (collab.), Sall, M. (collab.), Diara, M. (collab.), Fall. A. (collab.), Ly, I. (collab.), Monteiro, I. (collab.), Kone, V. (collab.), Toguyeni, A. (collab.), Bonnin, Marie (collab.), and Faraj, A. (collab.)
- Published
- 2016
15. Peche a la senne de plage au Benin et durabilite des ressources halieutiques
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Hounsounou, LC, Sohou, Z, and Akouehou, GS
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Senne de plage, poissons juvéniles, campements, pêcheurs artisans - Abstract
La senne de plage est un engin de pêche non sélectif, muni de poche qui, après l’encerclement des aires marines fait l’objet de halage à terre pendant des heures. Elle est généralement utilisée dans des eaux peu profondes à proximité du rivage. Un sondage a été réalisé au niveau des douze campements ciblés pour étudier les espèces régulièrement rencontrées, les périodes de pêche, les espèces en disparition en vue de comparer les rendements actuels avec les tailles des captures à ceux des années antérieures. Au total, 175 acteurs (propriétaires de filets, pêcheurs et mareyeuses) ont été enquêtés. La longueur totale de toutes les espèces dominantes a été mesurée de façon discontinue de juin 2011 à mars 2013. Les espèces débarquées sont constituées d’une diversité de poissons de tailles variées avec une proportion élevée de juvéniles. Aussi, la senne de plage détruit-elle les habitats des poissons côtiers, les nurseries et les aires de recrutement (Kebe M. et al., 1997, Beurier J. P. et Keïta R., 1982). Les juvéniles dominantes des captures sont, entre autres, le Musso africain (Selene dorsalis), l’Alose (Ilisha africana), le Sapater (Chloroscombrus chrysurus), la Sardinelle ronde (Sardinella maderensis), l’Ethmalose d’Afrique (Ethmalosa fimbriata), la Bécume guachanche (Sphyraena guachancho), l’Otholithe sénégalais (Pseudotolithus senegalensis), le Poisson sabre commun (Trichiurus lepturus), l’Anchois (Engraulis encrasicolus) et la crevette rose (Farfantepenaeus notialis). La pêche massive de juvéniles a conduit inévitablement au ralentissement du recrutement dans le stock ; ce qui entraine la modification dans le temps de la pyramide des âges avec gonflement des classes jeunes et tassement des classes âgés et la diminution des rendements de pêche. La surexploitation des ressources enferme davantage le pêcheur artisan dans un cercle vicieux de la pauvreté (CRHOB 2004, Hounsounou L. C., 2011).Mots clés : Senne de plage, poissons juvéniles, campements, pêcheurs artisans.
- Published
- 2015
16. Aquaculture marine au Benin : Perspectives de l’elevage de Lutjanus agennes, Epinephelus Aeneus et Mugil cephalus
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Hinvi, LC, Chikou, A, Sohou, Z, and Laleye, P
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Des essais d’élevage de Lutjanus agennes, Epinephelus aeneus et Mugil cephalus) ont été réalisés en étangs pendant 12 mois. Une fertilisation naturelle des étangs et une complémentation alimentaire des sujets ont été utilisées. Les paramètres environnementaux (température, salinité de l’eau) et les paramètres morphométriques de chaque espèce ont été mesurés. Les résultats montrent une croissance pondérale et en longueur significative d’une espèce à l’autre (p < 0,05) au cours de la période de l’essai. Ainsi, E. aeneus présente une masse corporelle moyenne variant entre 38,18 ± 0,24 g et 409,81 ±1,39 g pour une longueur moyenne variant entre 10,48 ± 0,01 cm et 24,58 ± 0,04 cm. L. agennes présente une masse moyenne corporelle variant entre 35,16 ± 0,57 g et 452,12 ± 2,03 g pour une longueur moyenne variant entre 10,01 ± 0,02 cm et 22,3 ± 0,03 cm. M. cephalus présente une masse corporelle moyenne variant entre 49,15 ± 1,01 g et 637,83 ± 1,03 g pour une longueur moyenne variant entre 14,06 ± 0,2 cm et 28,32 ± 0,32 cm. Les trois espèces présentent donc de bonnes performances de croissance et peuvent être recommandées pour l’aquaculture béninoise.Mots clés : Elevage, Epinephelus aeneus, Mugil cephalus, Lutjanus agennes, Bénin. Marine aquaculture in benin: prospects for the breeding of Lutjanus agennes, Epinephelus aeneus and Mugil cephalus.Tests of breeding of Lutjanus agennes, Epinephelus aeneus and Mugil cephalus) were carried out in ponds for 12 months. A natural fertilization of the ponds and a food complementation of the subjects were used. Environmental parameters (temperature, salinity of water) and of the parameters of were measured. The results show a ponderal growth and in significant length from one species to another (p < 0.05) during the probation period. The results show a ponderal growth and in significant length from one species to another (p < 0.05) during the probation period. Thus, E. aeneus has an average body mass varying between 38.18 ± 0.24 G and 409.81 ±1,39 G for an average length varying between 10.48 ± 0.01 cm and 24.58 ± 0.04 cm. L. agennes has a body average mass varying between 35.16 ± 0.57 G and 452.12 ± 2.03 G for an average length varying between 10.01 ± 0.02 cm and 22.3 ± 0.03 cm. M. cephalus has an average body mass varying between 49.15 ± 1.01 G and 637.83 ± 1.03 G for an average length varying between 14.06 ± 0.2 cm and 28.32 ± 0.32 cm. The three species thus present good performances of growth and can be recommended for the Beninese aquaculture.Keywords: Breeding, Epinephelus aeneus, Mugil cephalus, Lutjanus agennes, Benin.
- Published
- 2015
17. Domestication de portunus validus et callinectes amnicola au Bénin
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Hinvi, LC, Sohou, Z, Agadjihouede, H, Laleye, P, and Sinsin, B
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Aquaculture, Crabes, Portunus validus, Callinectes amnicola, Bénin. Aquaculture, Crabs, Portunus validus, Callinectes amnicola, Benin - Abstract
Afin de diversifier les espèces candidates à l’aquaculture béninoise, des essais de domestication ont été réalisés sur deux espèces de crustacés lagunaires, Portunus validus et Callinectes amnicola. Des essais de croissance basés sur le nourrissage sur production primaire des étangs (mis en charge de 100 individus) et sur complémentation alimentaire ont été faits en étangs vidangeables de 132 m2 pendant 12 mois en eaux saumâtres. Les paramètres morphométriques de croissance (largeur de carapace (LC), masse corporelle (MC), masse des pinces (MP) ont été mesurées. Les résultats ont montré des différences très significatives (p
- Published
- 2015
18. Book of abstract international conference ICAWA 2014 : the AWA project : ecosystem approach to the management of fisheries and the marine environment in West African waters
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Floch, F., Aziayibor, K., Almar, Rafaël, Penhoat, Yves du, Lefebvre, Jean-Pierre, Dorel, Matthieu, Degbe, C.G., Sohou, Z., Adje, C., Hounkonnou, N., Okey, T., Laibi, R., Abessolo, G., Grandjean, P., Scott, T., Castelle, B., Senechal, N., Detandt, G., Laryea, W., Angnuureng, D., Anthony, E., Brehmer, Patrice (ed.), Diop, H. (ed.), Gomez, M.M. (collab.), Diogoul, N. (collab.), Koutob, V. (collab.), Brandt, P. (collab.), Sow, B.A. (collab.), Lazar, A. (collab.), Capet, X. (collab.), Fock, H. (collab.), Santos, C.F. (collab.), Machu, Eric (collab.), Diadihou, H. (collab.), Jouffre, Didier (collab.), Diallo, I. (collab.), Schmidt, J. (collab.), Gaye, A. (collab.), Ould Taleb Sidi, M. (collab.), Gouriou, Yves (collab.), Almar, Rafael (collab.), Sall, M. (collab.), Duval Diop, D. (collab.), Thiow, M. (collab.), Wanless, R. (collab.), Gonzales-Solis Bou, J. (collab.), Ly, I. (collab.), Beye Traoré, D. (collab.), Bonnin, Marie (collab.), and Ekau, W. (collab.)
- Published
- 2015
19. Book of abstract international conference ICAWA 2014 : the AWA project : ecosystem approach to the management of fisheries and the marine environment in West African waters
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Almar, Rafaël, Lefebvre, Jean-Pierre, Marchesiello, Patrick, Kestenare, Elodie, Benshila, R., Penhoat, Yves du, Garlan, T., Grandjean, P., Allemand, P., Floch, F., Delacourt, C., Deschamps, A., Brehmer, Patrice, Roudaut, Gildas, Castelle, B., Senechal, N., Detandt, G., Laibi, R., Degebe, G., Sohou, Z., Hounkonnou, N., Laryea, W., Angnuureng, D., Appeaning Addo, K., Anthony, E., Blenkinsopp, C., Sall, M., Toure, A., Ranasinghe, R., Roelvink, D., Abessolo, G., Scott, T., Toure, L., Brehmer, Patrice (ed.), Diop, H. (ed.), Gomez, M.M. (collab.), Diogoul, N. (collab.), Koutob, V. (collab.), Brandt, P. (collab.), Sow, B.A. (collab.), Lazar, A. (collab.), Capet, X. (collab.), Fock, H. (collab.), Santos, C.F. (collab.), Machu, Eric (collab.), Diadihou, H. (collab.), Jouffre, Didier (collab.), Diallo, I. (collab.), Schmidt, J. (collab.), Gaye, A. (collab.), Ould Taleb Sidi, M. (collab.), Gouriou, Yves (collab.), Almar, Rafael (collab.), Sall, M. (collab.), Duval Diop, D. (collab.), Thiow, M. (collab.), Wanless, R. (collab.), Gonzales-Solis Bou, J. (collab.), Ly, I. (collab.), Beye Traoré, D. (collab.), Bonnin, Marie (collab.), and Ekau, W. (collab.)
- Published
- 2015
20. The Grand Popo beach 2013 experiment, Benin, West Africa: from short timescale processes to their integrated impact over long-term coastal evolution
- Author
-
Almar, Rafaël, Hounkonnou, N., Anthony, E. J., Castelle, B., Senechal, N., Laibi, R., Mensah-Senoo, T., Degbe, G., Quenum, M., Dorel, Matthieu, Chuchla, Rémy, Lefebvre, Jean-Pierre, Penhoat, Yves du, Laryea, W. S., Zodehougan, G., Sohou, Z., Addo, K. A., Ibaceta, R., and Kestenare, Elodie
- Subjects
wave reflection ,micro-meso tidal environment ,Gulf of Guinea ,beach cusps ,energetic swash ,low-tide terrace ,long swell ,littoral drift ,erosion - Abstract
The first large nearshore field experiment in the Gulf of Guinea was conducted at Grand Popo Beach, Benin, in February 2013, on an open wave-dominated micro- to meso-tidal coast, located mid-way between Cotonou and Lome harbours. The overall project aims at understanding at multi-scale (from event to interannual) the causes of the dramatic erosion observed throughout the Bight of Benin, and caused by the interaction of a large littoral drift with human engineering works. Grand Popo 2013 experiment was designed to measure the processes over the short term and to test the ability of an installed video system to monitor the evolution of this stretch of coast over the longer tenn. The beach, characterized by a low-tide terrace and a high tide reflective part, experiences a long swell (Hs=1.6 m, Tp=16 s, oblique incidence similar to 15-20 degrees). Topographic surveys showed a double beach cusp system interaction and repeated surf-zone drifter runs revealed high flash and swash rip activity driven by wave dissipation over the terrace and energetic swash dynamics at the upper reflective beach. Swash was measured over a cusp system at two locations using video poles. Wave reanalyses (ERAInterim) were used to determine the wave climate and its variability, and to quantify sediment transport. This robust methodology is thought to be replicated elsewhere in different coastal environments in West Africa, in particular with the objective to monitor various sites within the framework of the new West African Coastal Observatory.
- Published
- 2014
21. The Grand Popo experiment, Benin
- Author
-
Almar, R., Du Penhoat, Y., Honkonnou, N., Castelle, B., Laibi, R., Anthony, E. J., Sénéchal, N., Degbe, G., Chuchla, R., Sohou, Z., Dorel, M., Mensah-Senoo, T., Quenum, M., Addo K., A., Ibaceta, R., Kestenare, Elodie, Zodehougan, G., Laryea W., S., Lefebvre, J.P., Echanges Côte-Large (ECOLA), Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National d'Études Spatiales [Toulouse] (CNES)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), ICMPA-UNESCO Chair International Chair in Mathematical Physics and Applications, University of Abomey Calavi (UAC), Environnements et Paléoenvironnements OCéaniques (EPOC), Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE)-Centre National de la Recherche Scientifique (CNRS), Département des Sciences de la Terre, Faculté des Sciences et Techniques, Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Collège de France (CdF)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Institut National de la Recherche Agronomique (INRA), Institut de Recherche pour le Développement (IRD [France-Ouest]), Océan du Large et Variabilité Climatique (OLVAC), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Collège de France (CdF (institution))-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université d’Abomey-Calavi = University of Abomey Calavi (UAC), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE), and Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
wave reflection ,[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere ,micro-meso tidal environment ,Gulf of Guinea ,beach cusps ,energetic swash ,low-tide terrace ,long swell ,littoral drift ,erosion - Abstract
International audience; The first large nearshore field experiment in the G ulf of Guinea was conducted at Grand Popo Beach, Be nin, in February 2013, on an open wave-dominated micro- to meso-tidal coast, located mid-way between Cotonou and Lome harbours. The overall project aims at understanding at multi-scale (from event to interannual) the causes of the dramatic erosion observed throughout the Bight of Benin, and caused by the interaction of a large littoral drift with human engineering works. Grand Popo 2013 experiment was designed to measure the processes over the short term and to test the ability of an installed video system to monitor the evolution of this stretch of coast over the longer term. The beach, characterized by a low-tide terrace and a high tide reflective part, experiences a long swell (Hs=1.6m, Tp=16 s, oblique incidence ~15-20°). Topographic surveys showed a double beach cusp system interaction and repeated surf-zone drifter runs revealed high flash and swash rip activity driven by wave dissipation over the terrace and energetic swash dynamics at the upper reflective beach. Swash was measured over a cusp system at two locations using video poles. Wave reanalyses (ERAInterim) were used to determine the wave climate and its variability, and to quantify sediment transport. This robust methodology is thought to be replicated elsewhere in different coastal environments in West Africa, in particular with the objective to monitor various sites within the framework of the new West African Coastal Observatory.
- Published
- 2014
22. Biodiversity and Status of Cetaceans in Benin, West Africa: an Initial Assessment
- Author
-
Sohou, Z, Dossou-Bodjrenou, J, Tchibozo, S, Chabi-Yaouré, F, Sinsin, B, and Van Waerebeek, K
- Abstract
No published literature is available on the whales and dolphins of Benin. A first insight in the cetacean biodiversity based on stranding, capture and sighting records, as well as a preliminary assessment of status, is provided. Seven species were authenticated: humpback whale Megaptera novaeangliae, common bottlenose dolphin Tursiops truncatus, Atlantic spotted dolphin Stenella frontalis, false killer whale Pseudorca crassidens, shortfinned pilot whale Globicephala macrorhynchus, Cuvier’s beaked whale Ziphius cavirostris and sperm whale Physeter macrocephalus. Two additional taxa were confirmed at genus level, i.e. common dolphin Delphinus sp. and minke whale Balaenoptera sp. All reported species also occur in Ghana or Togo. Concern is expressed that in Benin, as in some other western African nations, coastal communities increasingly exploit stranded and by-caught cetaceans to supply a thriving, albeit illegal, marine bushmeat trade. Small cetaceans were also taken intentionally in the absence of efficient controls of landings or other management measures. Although presently at subsistence scale, the threat of wider commercialization exists. In view of the limited number of validated species, voucher specimens and scarce biological baseline information, opportunistic sampling must be expanded to include more systematic and dedicated research, in particular, ship-based marine mammal surveys. It is recommended that graduate students at Benin’s universities play a central role.
- Published
- 2013
23. Presence de la crevette tigree, Penaeus monodon (fabricius, 1798) (crustacea, penaeidae) dans les eaux maritimes beninoises
- Author
-
Sohou, Z and Djiman, R
- Subjects
Crustacés, Penaeidae, Penaeus monodon, Bénin, Golfe de Guinée - Abstract
Des crevettes géantes tigrées, Penaeus monodon (Fabricius, 1798) ont été capturées dans les eaux béninoises (Golfe de Guinée). Ces captures ont eu lieu sur le plateau continental, aux embouchures et dans les différents plans d'eau intérieurs du Bénin. Elles sont atypiques car P. monodon est seulement citée dans l'océan Indien et le Pacifique. Elles s'expliquent donc par le fait que des spécimens se sont déplacés certainement depuis les stations aquacoles situées au sud du Sénégal et en Gambie. La capturede cette espèce dans les eaux béninoises relève d'un phénomène que nous proposons d'analyser et de discuter après avoir présenté nos observations sur les crevettes géantes tigrées. L'espèce s'est probablement acclimatée depuis quelques années dans la région en dépit d'une possible compétition avec l'espèce autochtone. Farfantepenaeus notialis (Pérez Farfante 1967) qui habite les mêmes biotopes. Un suivi régulier et approfondi des différentes espèces est nécessaire dans un avenir proche.
- Published
- 2012
24. How marine data can be presented at a global scale: the African Marine Atlas as a case study
- Author
-
Scott, L., Ababio, S., Armah, A.K., Beebeejaun, M., Diallo, A., Dovlo, E., Hamady, B.O., Jasmin, R., Masalu, D., Maueua, C., McCord, M., Mwangi, T., Odido, M., On’Ganda, H., Rommens, W., Pissierssens, P., Reed, G., Sohou, Z., and Wedeinge, J.
- Subjects
Oceanographic atlases ,Africa Coasts - Published
- 2008
25. The Bight of Benin, a North Atlantic breeding ground of a Southern Hemisphere humpback whale population, likely related to Gabon and Angola substocks. Scientific Committee document SC/53/IA21, International Whaling Commission, July 2001, London
- Author
-
Van Waerebeek, K., Tchibozo, S., Montcho, J., Nobime, G., Sohou, Z., Sehouhoue, P., and Dossou, C.
- Subjects
Megaptera novaeangliae ,Pseudorca crassidens - Abstract
Aiming to assess the feasibility for commercial whale-watching in coastal waters of Benin, exploratory boat transects were made from 12-19 October 2000. In 55h48min of observation, covering 349.6 nautical miles, 22 positive sightings of humpback whale and three ‘like-humpback whale’ groups were recorded. Relative group density was 0.448 sightings/hour observing or 0.072 sightings/nautical mile surveyed. Mean group size was 1.52 individuals (SD=0.92, range 1-5, N=25) and relative density 0.109 humpback whale/nautical mile. Additional evidence showed that other nations bordering the Bight of Benin, i.e. Ghana, Togo and Nigeria also are new Range States. Off Benin we observed three cow/calf pairs; one calf stranded in Ghana and more calves were reported from Togo. The calves, considering their small size and behaviour are thought to be born locally. Adult humpback whales often engaged in aerial display behaviour, including breaching, energetic surfacings, flipper-slaps, lob-tailing and spy-hopping. Two surface-active groups were seen, a behaviour linked to courting and mating. Occurrence off Benin and Togo is seasonal, from early August till early November. Although geographically situated firmly in the North Atlantic (boreal of 06°N), seasonality agrees with a breeding ground of a Southern Hemisphere population for which we propose the name ‘Bight of Benin substock’. Likely related to the IWC-defined Gabon and Angola substocks, combined these may form a wide-ranging Gulf of Guinea population. Overall sighting conditions were favorable and each of six trips resulted in at least one whale encounter, confirming whale-watching potential. A single ‘like-bottlenose dolphin’ group sighting was unrepresentative for small cetacean abundance when checked against frequent opportunistic observations. A collection of specimen identified as Pseudorca crassidens is the first record of false killer whale in the Bight of Benin.
- Published
- 2001
26. Impact of the citizen science project COLLECT on ocean literacy and well-being within a north/west African and south-east Asian context.
- Author
-
Severin MI, Akpetou LK, Annasawmy P, Asuquo FE, Beckman F, Benomar M, Jaya-Ram A, Malouli M, Mees J, Monteiro I, Ndwiga J, Neves Silva P, Nubi OA, Sim YK, Sohou Z, Shau-Hwai AT, Woo SP, Zizah S, Buysse A, Raes F, Krug LA, Seeyave S, Everaert G, Mahu E, and Catarino AI
- Abstract
Plastic pollution is both a societal and environmental problem and citizen science has shown to be a useful tool to engage both the public and professionals in addressing it. However, knowledge on the educational and behavioral impacts of citizen science projects focusing on marine litter remains limited. Our preregistered study investigates the impact of the citizen science project Citizen Observation of Local Litter in coastal ECosysTems (COLLECT) on the participants' ocean literacy, pro-environmental intentions and attitudes, well-being, and nature connectedness, using a pretest-posttest design. A total of 410 secondary school students from seven countries, in Africa (Benin, Cabo Verde, Côte d'Ivoire, Ghana, Morocco, Nigeria) and Asia (Malaysia) were trained to sample plastics on sandy beaches and to analyze their collection in the classroom. Non-parametric statistical tests ( n = 239 matched participants) demonstrate that the COLLECT project positively impacted ocean literacy (i.e., awareness and knowledge of marine litter, self-reported litter-reducing behaviors, attitudes towards beach litter removal). The COLLECT project also led to higher pro-environmental behavioral intentions for students in Benin and Ghana (implying a positive spillover effect) and higher well-being and nature connectedness for students in Benin. Results are interpreted in consideration of a high baseline in awareness and attitudes towards marine litter, a low internal consistency of pro-environmental attitudes, the cultural context of the participating countries, and the unique settings of the project's implementation. Our study highlights the benefits and challenges of understanding how citizen science impacts the perceptions and behaviors towards marine litter in youth from the respective regions., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Severin, Akpetou, Annasawmy, Asuquo, Beckman, Benomar, Jaya-Ram, Malouli, Mees, Monteiro, Ndwiga, Neves Silva, Nubi, Sim, Sohou, Shau-Hwai, Woo, Zizah, Buysse, Raes, Krug, Seeyave, Everaert, Mahu and Catarino.)
- Published
- 2023
- Full Text
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