In situ measurements of flow effects on primary production and dark respiration in reef corals
In situ measurements of flow effects on primary production and dark respiration in reef corals
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现场测量水流对珊瑚礁珊瑚初级生产和暗呼吸的影响
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
R. R. Olson
中科院分区：
文献类型：
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作者：
M. Patterson;K. Sebens;R. R. Olson
利用水下生物栖息地部署的环流呼吸测量系统，现场研究了水流对加勒比海珊瑚礁的重要骨架物种--环状月牙藻生理生态的影响。对于该物种，初级生产力和呼吸速率随着水分运动的增加而增加。无量纲Sherwood(Sh)-Reynolds(Re)数图的斜率表明，强迫对流增加暗呼吸的方式与通过湍流边界层的氧气转移一致(Sh=0.01Re‘.30)。对最大光合作用速率的类似分析得到一个较低但显著的斜率(Sh=0.71 Reo.63)。珊瑚边界层中扩散损耗的一个简单概念模型符合数据，并解释了虫黄藻的分布。对该物种的光营养能力的计算表明，水的运动可以提高珊瑚礁的当地生产力。
The effects of flow on the physiological ecology of Montustrea annuluris, an important framebuilding species of Caribbean coral reefs, were investigated in situ with a recirculating flow respirometry system deployed from an underwater habitat. For this species, primary production and respiration rates increase with increasing water motion. The slope of a nondimensional Sherwood (Sh)-Reynolds(Re) number plot indicates that forced convection increases dark respiration in a manner consistent with oxygen transfer through a turbulent boundary layer (Sh = 0.01Re’.30). A similar analysis for maximal photosynthetic rate yields a lower but significant slope (Sh = 0.7 1 Reo.63). A simple conceptual model of diffusional depletion in the boundary layer over the coral fits the data and accounts for the distribution of zooxanthellae. Calculations of phototrophic capacity for this species indicate that water motion can enhance the local productivity of the reef.