UMR 5119, ECOSYM, Ecologie des Systèmes Marins Côtiers (UM2, CNRS, IRD, Ifremer, UM1), Université Montpellier 2, Place Eugène Bataillon, Case 093, 34095 Montpellier Cedex 5, France.
Mar Pollut Bull. 2012;65(10-12):516-24. doi: 10.1016/j.marpolbul.2012.01.008. Epub 2012 Feb 4.
The spatial variations of the picoplankton (photoautotrophic and heterotrophic microorganisms) in the Ahe atoll lagoon were studied in May and October 2008 to assess whether they were affected by human activities along the atoll. Spatial patterns were studied using 10 sampling stations chosen according to the location of the anthropogenic activities (pearl farming, harbor). Experiments were also carried out to determine whether bacterial growth, with or without predators, was limited by inorganic (N and P) substrates. The results showed that heterotrophic bacterioplankton abundance was superior to the photoautotrophic organisms, especially in May. Significant increases in bacterial abundance were observed in May after 24 h incubation with +P and +N (but not in October). All samples complied with the quality levels for fecal indicator bacteria (FIB) defined by the European Union and there was no evidence that human sewage had any impact on picoplankton over the whole atoll.
对 2008 年 5 月和 10 月阿赫环礁泻湖中小型浮游生物（自养和异养微生物）的空间变化进行了研究，以评估它们是否受到环礁沿岸人类活动的影响。根据人为活动（珍珠养殖、港口）的位置选择了 10 个采样站来研究空间格局。还进行了实验以确定是否细菌生长（有无捕食者）受到无机（N 和 P）底物的限制。结果表明，异养细菌浮游生物的丰度优于自养生物，尤其是在 5 月。在 24 小时的 +P 和 +N 孵育后（但在 10 月没有）观察到细菌丰度显著增加。所有样品均符合欧盟规定的粪便指示细菌（FIB）质量水平，没有证据表明人类污水对整个环礁的小型浮游生物有任何影响。
