Photoinhibition of photosynthesis in natural assemblages of marine phytoplankton
Photoinhibition of photosynthesis in natural assemblages of marine phytoplankton
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发表时间：
1980
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通讯作者：
T. Platt;C. Gallegos;W. G. Harrison
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文献类型：
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作者：
T. Platt;C. Gallegos;W. G. Harrison
引入了一个新的经验方程式，该方程将浮游植物的光合作用描述为通过在任何自然条件下遇到的最高光级别的光线范围，从始于抑制的最高光级别通过光抑制的范围来形容可用的li ght的单个，连续的功能。曲线的特性是deri ved的，并为浮游植物的光饱和实验结果提供了一个程序。该方程的多功能性通过来自加拿大东部北极以及新斯科舍省和秘鲁大陆货架的天然浮游植物组合收集的数据说明。光抑制指数从fi ted曲线中得出的曲线有很强的深度和一天中的时间：它们可能在表征浮游植物的生理状态时很有用。
A new empirical equation is introduced that describes the photosynthesi s by phytoplankton as a single, continuous function of available li ght from the initi al linear response through the photoinhibited range at the highest light levels li able to be encountered under any natural conditions. The properties of the curve are deri ved, and a procedure is given for fitti ng it to the results of light-saturation experiments for phytoplankton. The versatility o f the equation is illustrated by data collected on natural phytoplankton assemblages from the eastern Canadian arctic and from the continental shelves of Nova Scotia and Peru. Photoinhibition indices derived fr om the fi tted curve vary strongly wi th depth and wi th time of day : they may be useful in characterizing the physiological state of the phytoplankton.