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首页> 外文期刊>Annual review of marine science >Subsurface Chlorophyll Maximum Layers: Enduring Enigma or Mystery Solved?
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Subsurface Chlorophyll Maximum Layers: Enduring Enigma or Mystery Solved?

机译：地下叶绿素最大层数：持久的谜底或奥秘得以解决？

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摘要

The phenomenon of subsurface chlorophyll maximum layers (SCMLs) is not a unique ecological response to environmental conditions; rather, a broad range of interacting processes can contribute to the formation of persistent layers of elevated chlorophyll a concentration (Chl) that are nearly ubiquitous in stratified surface waters. Mechanisms that contribute to the formation and maintenance of the SCMLs include a local maximum in phytoplankton growth rate near the nutricline, photoacclimation of pigment content that leads to elevated Chl relative to phytoplankton biomass at depth, and a range of physiologically influenced swimming behaviors in motile phytoplankton and buoyancy control in diatoms and cyanobacteria that can lead to aggregations of phytoplankton in layers, subject to grazing and physical control. A postulated typical stable water structure characterizes consistent patterns in vertical profiles of Chl, phytoplankton biomass, nutrients, and light across a trophic gradient structured by the vertical flux of nutrients and characterized by the average daily irradiance at the nutricline. Hypothetical predictions can be tested using a nascent biogeochemical global ocean observing system. Partial results to date are generally consistent with predictions based on current knowledge, which has strong roots in research from the twentieth century.
机译：地下叶绿素最大层（SCML）现象不是对环境条件的独特生态反应;相反，广泛的相互作用过程可有助于形成层状地表水中几乎无处不在的高水平叶绿素a（Chl）持久层。促成SCML形成和维持的机制包括在营养线附近的浮游植物生长速度局部最大，色素含量的光致驯化导致Chl在深度上相对于浮游植物生物量升高以及在运动型浮游植物中一系列生理影响的游泳行为硅藻和蓝细菌的浮力控制可能会导致浮游植物在各层中的聚集，并受到放牧和物理控制。假定的典型稳定水结构表征了Chl，浮游植物生物量，营养物和光的垂直剖面中的一致模式，该营养物横穿由营养物的垂直通量构成的营养梯度，并以营养素的日平均辐照度为特征。可以使用新生的生物地球化学全球海洋观测系统来检验假想的预测。迄今为止，部分结果通常与基于当前知识的预测相一致，这与20世纪的研究有很深的渊源。

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