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Ocean acidification effect on prokaryotic metabolism tested in two diverse trophic regimes in the Mediterranean Sea

机译:在地中海的两种不同营养体系中测试了海洋酸化对原核生物代谢的影响

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摘要

Notwithstanding the increasing amount of researches on the effect of ocean acidification (OA) on marine ecosystems, no consent has emerged on its consequences on many prokaryote-mediated processes. Two mesocosm experiments were performed in coastal Mediterranean areas with different trophic status: the summer oligotrophic Bay of Calvi (BC, Corsica, France) and the winter mesotrophic Bay of Villefranche (By, France). During these experiments, nine enclosures (similar to 54 m(3)) were deployed: 3 unamended controls and 6 elevated CO2, following a gradient up to 1250 mu atm. We present results involving free-living viral and prokaryotic standing stocks, bacterial carbon production, abundance of highly active cells (CTC+), and degradation processes (beta-glucosidase, chitinase, leucine-aminopeptidase, lipase and alkaline phosphatase activities).
机译:尽管关于海洋酸化(OA)对海洋生态系统的影响的研究越来越多,但尚未就其对许多原核生物介导的过程的影响达成共识。在具有不同营养状态的地中海沿岸地区进行了两次中观试验:卡尔维的夏季贫营养湾(BC,法国科西嘉)和维勒弗兰奇的冬季中等营养湾(法国,法国)。在这些实验中,部署了9个围墙(类似于54 m(3)):3个未修改的控件和6个升高的CO2,其梯度达到1250μatm。我们目前的结果涉及自由生活的病毒和原核生物常备种群,细菌碳的产生,高活性细胞(CTC +)的丰富度以及降解过程(β-葡萄糖苷酶,几丁质酶,亮氨酸-氨基肽酶,脂肪酶和碱性磷酸酶活性)。

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