Physical and chemical control of the phytoplankton of Ahe lagoon, French Polynesia
Physical and chemical control of the phytoplankton of Ahe lagoon, French Polynesia
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DOI：
10.1016/j.marpolbul.2011.12.026
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发表时间：
2012-01-01
影响因子：
5.8
通讯作者：
Gaertner-Mazouni, Nabila
中科院分区：
文献类型：
--
作者：
Charpy, Loic;Rodier, Martine;Gaertner-Mazouni, Nabila
对法属波利尼西亚土阿莫土群岛（Tuamotu Archipelago, French Polynesia）的Ahe深泻湖（Ahe deep lagoon）环境特征进行了为期3年的研究，目的是解释珍珠牡蛎天然食物的时空变化，特别关注泻湖浮游植物生物量和全球光合作用/呼吸比。叶绿素平均为0.34 +/- 0.01 μ g -1，我们的研究结果并未证实深水水域浮游植物生物量增加。浮游植物的生产似乎首先受到氮和呼吸过程的限制，至少在环礁的东北边缘超过了光合过程。养殖珍珠牡蛎的放牧似乎降低了POC浓度，但没有降低浮游植物生物量。牡蛎主要以非绿藻颗粒为食。(C) 2011 Elsevier Ltd.版权所有。
The environmental characteristics of Ahe deep lagoon (Tuamotu Archipelago, French Polynesia) were studied over 3 years with the aim of explaining the spatial and temporal variability of the natural food available for pearl oysters with a special focus on phytoplankton biomass and global photosynthesis/respiration ratio of the lagoon. Chlorophyll averaged 0.34 +/- 0.01 mu g L-1 and our findings did not confirm increased phytoplankton biomass in deep lagoonal waters. Phytoplankton production appears to be limited firstly by nitrogen and respiratory processes overpass photosynthetic processes at least in the northeastern edge of the atoll. Grazing by pearl oysters in culture seems to decrease the POC concentration but not the phytoplankton biomass. Oysters graze mainly on non chlorophyllian particles. (C) 2011 Elsevier Ltd. All rights reserved.