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Great Barrier Reef A. aspera data files for physiology, photophysiology, and SST trajectories/offsets

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Research Data Australia2024-12-14 收录
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https://researchdata.edu.au/great-barrier-reef-sst-trajectoriesoffsets/988780
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This data package consists of 6 files: (1) Source data qPCR (2) PAM source data (3) Source data for Figure 2 temperature offsets (4) Yield data NPQ acclimation (5) Raw gene expression data (6) Zooxanthellae counts Abstract [Related Publication]: Coral bleaching events threaten the sustainability of the Great Barrier Reef (GBR). Here we show that bleaching events of the past three decades have been mitigated by induced thermal tolerance of reef-building corals, and this protective mechanism is likely to be lost under near-future climate change scenarios. We show that 75% of past thermal stress events have been characterized by a temperature trajectory that subjects corals to a protective, sub-bleaching stress, before reaching temperatures that cause bleaching. Such conditions confer thermal tolerance, decreasing coral cell mortality and symbiont loss during bleaching by over 50%. We find that near-future increases in local temperature of as little as 0.5°C result in this protective mechanism being lost, which may increase the rate of degradation of the GBR. The full methodology is available in the publication shown in the Related Publications link below.

本数据集包包含6个文件: (1) 定量聚合酶链式反应(qPCR)源数据 (2) 脉冲振幅调制(PAM)源数据 (3) 图2温度偏移量源数据 (4) 非光化学淬灭(NPQ)适应的光合产量数据 (5) 原始基因表达数据 (6) 虫黄藻计数数据 【相关出版物摘要】珊瑚白化事件严重威胁大堡礁(Great Barrier Reef, GBR)的可持续存续。本研究证实,过去三十年间的珊瑚白化事件已通过造礁珊瑚的诱导型耐热性得到缓解,但该保护机制在近期气候变化情景下大概率将丧失。研究表明,75%的既往热应激事件的温度变化轨迹均呈现如下特征:在达到引发白化的临界温度前,先使珊瑚承受保护性的亚白化胁迫。此类环境可赋予珊瑚耐热性,使白化过程中珊瑚细胞死亡率及共生体丢失率降低50%以上。我们发现,即便当地温度仅升高0.5℃,该保护机制便会失效,这可能会加快大堡礁的退化速率。 完整的实验方法可通过下述相关出版物链接查阅。
提供机构:
James Cook University
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