Experimental sump pCO2 data collected as part of a study of pCO2 variability on the reef-building coral Pocillopora damicornis conducted at Heron Island Research Station, Heron Island, southern Great Barrier Reef in 2021

This dataset contains experimental sump pCO2 data. These data were collected as part of a study of pCO2 variability on the reef-building coral Pocillopora damicornis conducted at Heron Island Research Station, Heron Island, southern Great Barrier Reef in 2021 (Brown et al., 2022). Abstract for all data from the study (Brown et al., 2022) including this dataset: Ocean acidification is a growing threat to coral growth and the accretion of coral reef ecosystems. Corals inhabiting environments that already endure extreme diel pCO2 fluctuations, however, may represent acidification resilient populations capable of persisting on future reefs. Here, we examined the impact of pCO2 variability on the reef-building coral Pocillopora damicornis originating from reefs with contrasting environmental histories (variable reef flat vs. stable reef slope) following reciprocal exposure to stable (218 ± 9) or variable (911 ± 31) diel pCO2 amplitude (μtam) in aquaria over eight weeks. This study measured: growth (net calcification, extension, CaCO3 density) and physiology (dark respiration, light-enhanced dark respiration, host soluble protein, mycosporine-like amino acids, net photosynthesis, photosynthetic efficiency, endosymbiont density, chlorophyll a concentration, intracellular pH) of P. damicornis across treatment and origin. See all datasets related to this publication (https://www.bco-dmo.org/related-resource/885684).本数据集包含实验采集的集水舱水体二氧化碳分压（pCO2）数据。这些数据是2021年于大堡礁南部赫伦岛的赫伦岛研究站开展的造礁珊瑚鹿角杯形珊瑚（*Pocillopora damicornis*）二氧化碳分压变异性研究的一部分（Brown等人，2022）。 本研究（Brown等人，2022）包含本数据集在内的全部数据的摘要如下： 海洋酸化对珊瑚生长及珊瑚礁生态系统的钙化沉积正构成日益严峻的威胁。然而，栖息于已经受极端昼夜二氧化碳分压波动环境的珊瑚，或可代表具备酸化耐受能力的种群，能够在未来的珊瑚礁上存续。 本研究中，我们将源自环境背景迥异的珊瑚礁（波动型礁坪与稳定型礁坡）的鹿角杯形珊瑚，于水族箱中分别接受为期8周的稳定（218±9）或波动（911±31）昼夜二氧化碳分压振幅（μtam）的交叉暴露处理，以此探究二氧化碳分压变异性对该造礁珊瑚的影响。本研究测定了不同处理组及不同种群来源的鹿角杯形珊瑚的多项生长与生理指标：生长指标包括净钙化率、伸展速率、碳酸钙（CaCO3）密度；生理指标包括暗呼吸速率、光促暗呼吸速率、宿主可溶性蛋白含量、类菌孢素氨基酸含量、净光合速率、光合效率、内共生藻密度、叶绿素a浓度以及细胞内pH值。 可访问以下链接获取与该出版物相关的全部数据集：https://www.bco-dmo.org/related-resource/885684。