NEW LIGHT ON THE SCALING OF METABOLIC RATE WITH THE SIZE OF ALGAE
NEW LIGHT ON THE SCALING OF METABOLIC RATE WITH THE SIZE OF ALGAE
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DOI：
10.1046/j.1529-8817.2002.01125.x
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发表时间：
2002-02
影响因子：
2.9
通讯作者：
J. Raven;J. Kübler
中科院分区：
文献类型：
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作者：
J. Raven;J. Kübler
对藻类代谢率随藻类大小的比例关系进行了详细的讨论和研究。在等式R = a·W−b（其中R为特定生长率，W为生物体[细胞]生物量，a和b为常数）中，藻类的指数b通常等于或高于许多其他生物体的- 0.25值，这通常与R的资源饱和（最大值）值有关。最近的研究表明，光限生长的指数b比- 0.25更负。这是通过考虑光子吸收中的包效应来预测的，这是由细胞的体积特异性色素含量和光合单位大小调节的。需要进一步的工作将这些发现外推到波动的光环境中。这篇小型综述将最近的工作置于更广泛的背景下，并建议如何进一步的工作可以量化光学厚度和辐射场的时空变化在确定代谢率方面的作用。
The scaling of metabolic rate with the size of algae has been discussed and researched at length. The observation that algae usually have exponents b in the equation R = a·W−b (where R is the specific growth rate, W is the organism [cell] biomass, and a and b are constants) equal to or higher than the value of −0.25 for many other organisms is generally related to resource‐saturated (maximal) values of R. Recent work has shown that the exponent b for light‐limited growth is more negative than −0.25. This was predicted from considerations of the package effect in photon absorption, as modulated by the volume‐specific pigment content of the cells, and the photosynthetic unit size. Further work is needed to extrapolate these findings to fluctuating light environments. This minireview puts the recent work into a broader context and suggests how further work could quantify the roles of optical thickness and of spatial and temporal variations in the radiation field in determining metabolic rates.