Characteristics of coral bleaching in the Mauritius : micro ecosystem and biogeochemistry

目的：了解毛里求斯珊瑚礁珊瑚漂白和珊瑚疾病的发生机制和控制因素，了解毛里求斯珊瑚礁基本化学和生物参数的时空分布。结果：初级生产力和氮固定表明，珊瑚碎屑和蓝藻席对珊瑚礁的贡献可能是非常重要的。对底栖动物群落的评价有助于了解珊瑚礁的生物多样性。珊瑚健康状况良好，没有表现出任何漂白模式，几乎没有观察到任何疾病。此外，海草和珊瑚的共生也是毛里求斯保持健康珊瑚的重要条件。我们的结论是，尽管有强烈的人类活动(渔业和旅游)影响，但珊瑚礁的实际状况是相当健康的，这可能是由于珊瑚礁内良好的水交换。

Purpose : To understand mechanisms and controlling factors of coral bleaching and coral disease in coral reefs in the Mauritius, To know temporal and spatial distributions of fundamental chemical and biological parameters in coral reefs in the Mauritius. Results : Primary production and N2 fixation indicated that the contribution of coral rubbles and cyanobacteria mats maybe very important for the reefs. Evaluation of benthic community was usefull to understand the organisms diversity in the reefs. Corals health condition is good, without showing any bleaching pattern and almost no diseases were observed. And also coexsistence between seagrass and coral are important conditions for keeping health coral in the Mauritius. We concluded that actual condition of reef is quite healthy despite the strong human activities(fisheries and turism) impacting this reef, and this is maybe due to the good water exchange in the reef.