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当前位置: 首页 > 文章 > 光谱质量和光子照度对酸化环境中珊瑚代谢的影响 广东海洋大学学报 2016,36 (4) 55-65
Position: Home > Articles > Role of Light Intensity and Spectral Quality in the OA-induced Metabolic Responses of Coral Journal of Guangdong Ocean University 2016,36 (4) 55-65

光谱质量和光子照度对酸化环境中珊瑚代谢的影响

作  者：
廖宝林;肖宝华;杨小东;谢子强
单  位：
深圳市碧海蓝天海洋科技有限公司;广东海洋大学深圳研究院
关键词：
造礁石珊瑚;光谱;光子照度;酸化;光合作用效率;钙化率
摘  要：
以霜鹿角珊瑚(Acropora pruinosa)、稀杯盔形珊瑚(Galaxea astreata)、盾形陀螺珊瑚(Turbinaria peltata)为研究对象,研究光照对酸化环境中的珊瑚钙化的调节作用。结果表明,光照条件下,随着p H降低,光照钙化率(G_L)下降,且光子照度越低钙化率越低;酸化环境中,不同光谱低光强(LL)条件下G_L、G_L/GD(暗环境钙化率)比值小于高光强(HL)环境,G_L变化率大于HL环境,稀杯盔形珊瑚尤为明显,酸化对石珊瑚G_L的影响在高光强环境(HL)中受抑制。酸化环境中霜鹿角珊瑚总光合作用效率(P_G)在HL条件下降低速率明显小于LL,稀杯盔形珊瑚和盾形陀螺珊瑚则无差异,光子照度对酸化环境中不同珊瑚的P_G调节效果不同;G_L和P_G、G_L变化率和P_G变化率间的线性相关性显示HL加强了P_G,且可能加强G_L,由于P_G可能受限于pCO_2,且HL条件下,酸化减缓了pCO_2对P_G的抑制作用。低光子照度下珊瑚对酸化环境比较敏感。
译  名：
Role of Light Intensity and Spectral Quality in the OA-induced Metabolic Responses of Coral
作  者：
XIAO Bao-hua;LIAO Bao-Lin;YANG Xiao-Dong;XIE Zi-Qiang;Shenzhen Research Institute of Guangdong Ocean University;Guangdong Ocean University;Shenzhen Ocean Hyaline Marine Science and Technology Co. Ltd;
关键词：
reef-building corals;;light spectrum;;light intensity;;ocean acidification;;photosynthetic efficiency;;calcification rates
摘  要：
We employed a multifactorial growth experiment to determine how light intensity and OA together modify the calcification of Acropora pruinosa,Galaxea astreata and Turbinaria peltata. It was found that decreased p H(OA)-induced losses of calcification in the light(G_L) especially under low-light growth conditions. The influence of light intensity upon gross photosynthesis(P_G)onses is coral species specific. Under light-limited growth conditions G_L,G_L / GD with OA was lower than that growth under high-light and with different spectral quality,but the change of G_L with OA was higher than that of under high-lightcondition,in particular for Galaxea astreata. Those results suggested that high-light growth conditions dampened the impact of OA upon G_L. OA-induced change of P_G on light-saturated growth(LL)was significantly smaller than LL for Acropora pruinosa,and did not show a significant differences between high light(HL)and low light(LL)for Galaxea astreata,Turbinaria peltata. The reciprocal OA-induced change of G_L with P_G and change of G_L with P_G are consistent with the notion that P_G is enhanced by HL and G_L is enhanced by P_G,which is fundamentally limited by pCO_2 availability(and hence relieved by OA) under HL. In total,this study suggests that lower light availability will potentially increase the susceptibility of key coral species to OA.

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