Net calcification of coral fragments 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 the overall change in net calcification of the coral fragments (% change in buoyant weight per day). 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).

本数据集涵盖珊瑚断片的净钙化整体变化（每日浮力重量变化百分比）。这些数据采集自2021年于大堡礁南部赫伦岛赫伦岛研究站开展的一项针对造礁珊瑚鹿角杯形珊瑚（Pocillopora damicornis）二氧化碳分压（pCO2）变异性的研究（Brown等人，2022）。

包含本数据集在内的该研究（Brown等人，2022）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（pCO2）波动环境的珊瑚，或可代表具有酸化耐受能力的种群，能够在未来珊瑚礁上存续。本研究针对源自环境背景迥异的礁体（可变礁坪与稳定礁坡）的鹿角杯形珊瑚（Pocillopora damicornis），在水族箱中进行为期8周的交叉暴露实验，分别置于稳定（218 ± 9）或可变（911 ± 31）昼夜二氧化碳分压波动幅度（μtam）条件下，以此探究二氧化碳分压变异性对该造礁珊瑚的影响。本次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生长指标（净钙化、延伸率、碳酸钙（CaCO3）密度）与生理指标（黑暗呼吸、光增强黑暗呼吸、宿主可溶性蛋白、类菌孢素氨基酸、净光合速率、光合效率、内共生藻密度、叶绿素a浓度、细胞内pH）。

可访问以下链接获取与该研究相关的全部数据集：https://www.bco-dmo.org/related-resource/885684。