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| Westmacott, Susie; Quod, J.P.. |
| CORDIO activities were conducted in seven of the Indian Ocean Islands namely, Comores, Madagascar, Mauritius, Mayotte, Réunion, Rodregues, and Seychelles. On each island biophysical and socio-economic assessments were conducted which have strengthened the annual monitoring of the reefs and collected baseline data for the socio-economic monitoring. In addition, a rapid assessment of the risk posed to island communities of ciguatera poisoning caused by potential increases in abundance of ciguatoxin producing dinoflagellates following bleaching was carried out. This study will eventually be expanded to encompass sites throughout the CORDIO region. Finally, as a record, a digital photographic database of the monitoring sites has been developed for the Island... |
| Tipo: Report |
Palavras-chave: Environmental assessment; Impact assessment; Socioeconomic development; Http://aims.fao.org/aos/agrovoc/c_37938; Http://aims.fao.org/aos/agrovoc/c_29966. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/475 |
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| Bigot, L.; Quod, J.P.. |
| During the period from January to August 1998, the largest coral bleaching event and subsequent mortality ever recorded had a huge ecological impact on coral reefs throughout the Indian Ocean. This event corresponded to increased seawater temperatures due to an ENSO phenomenon (Wilkinson, 1998). The full extent of the socio-economic impacts will depend on the recovery capacity of corals which, in many locations, are seriously threatened by human activities. This study documents the ecological status and recovery of corals reefs from theComoros archipelago (Comoros, Mayotte, Geyser), Madagascar and Réunion which were affected by the bleaching from January to August 1998. The impact of the bleaching at each location varies in its extent in time and severity. |
| Tipo: Preprint |
Palavras-chave: Coral reefs. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/476 |
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| Quod, J.P.. |
| Coral reefs are vital for coastal populations and for human activities in general, as they provide people both with living resources and with "services" such as shore protection, sand accretion and coastal tourism. The coral bleaching event of 1997-1998 summer is the most geographically wide spread and severe ever recorded. In the Indian Ocean, warm waters migrated from the South to the North during the first six months. As temperature stress was extreme and/or prolonged, mortality was catastrophically high in many areas (Kenya, Comoros, Seychelles, Tanzania, Maldives), the amount of dead corals ranging from 50-90%. Therefore, ITMEMS (International Tropical Marine Ecosystems Management Symposium) held in Townsville on 24 november 1998 recommended that a... |
| Tipo: Report |
Palavras-chave: Coral reefs. |
| Ano: 1999 |
URL: http://hdl.handle.net/1834/492 |
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| Turquet, J.; Quod, J.P.; Conejero, S.; Ralijaona, C.. |
| During the last two decades, countries from the Indian Ocean region have experienced a variety of seafood poisonings involving coral reef fishes (ciguatera), turtles (chelonitoxism), sharks (carchatoxism) and sardines (clupeotoxism) (Quod & Turquet, 1996; Turquet et al., 2000a). The ecotoxicological process of ciguatera fish poisoning (CFP) is caused by benthic dinoflagellates from coral reefs (Gambierdiscus, Prorocentrum, Ostreopsis) that are epiphytic on algal turfs, coral rubble and macro-algae. They produce potent neurotoxins that accumulate in herbivorous marine animals and are transferred to higher levels of the food chain by carnivorous fish. These microalgae are natural inhabitants of coral reefs and become problematic when densities reach... |
| Tipo: Report |
Palavras-chave: Coral reefs. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/483 |
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| Durville, P.; Chabanet, P.; Quod, J.P.. |
| This paper constitutes the first qualitative study of coral reef fish populations in the archipelago of the Glorieuses Islands (northern Mozambique Channel). Sampling by visual census techniques, at depths between 0 and 15 meters, was carried out at 30 stations spread over the whole reef. Three hundred and thirty-two (332) fish species belonging to 57 families were registered in this way. These relatively high numbers show that isolated coral reef formations, even of small size, can be endowed with a great specific richness of reef ichthyofauna. These results may be explained by an oceanic flow that favours recruitment, a diversified habitat, and low anthropogenic impact. |
| Tipo: Journal Contribution |
Palavras-chave: Coral reefs; Reef fish. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/958 |
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