Diel temperature and pH variability scale with depth across diverse coral reef habitats
Diel temperature and pH variability scale with depth across diverse coral reef habitats
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DOI：
10.1002/lol2.10129
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发表时间：
2019-12-20
影响因子：
7.8
通讯作者：
Andersson, Andreas J.
中科院分区：
文献类型：
--
作者：
Cyronak, Tyler;Takeshita, Yuichiro;Andersson, Andreas J.
珊瑚礁正面临日益加剧的压力，这主要是由于全球海水温度上升和pH下降所致。然而，珊瑚礁生态系统中存在着广泛的环境变异性，这可能会影响生物对全球趋势的反应。我们在不同的浅海珊瑚礁栖息地部署了自主传感器的空间阵列，以确定海水物理化学参数的时空变异性模式。由于太阳加热和光驱动的新陈代谢，温度和pH在一天中呈正相关。温度和pH值的平均时间和空间范围在所有地点都是正相关的，在不同的珊瑚礁类型中观察到不同的变异性。最终，深度是预测海水温度和pH值的平均深度范围的可靠指标。这些结果表明，珊瑚礁内与水柱深度有关的海底时间尺度上存在广泛的环境变异性，需要将其纳入对全球变化将如何影响局部珊瑚礁生态系统的评估中。
Coral reefs are facing intensifying stressors, largely due to global increases in seawater temperature and decreases in pH. However, there is extensive environmental variability within coral reef ecosystems, which can impact how organisms respond to global trends. We deployed spatial arrays of autonomous sensors across distinct shallow coral reef habitats to determine patterns of spatiotemporal variability in seawater physicochemical parameters. Temperature and pH were positively correlated over the course of a day due to solar heating and light-driven metabolism. The mean temporal and spatial ranges of temperature and pH were positively correlated across all sites, with different regimes of variability observed in different reef types. Ultimately, depth was a reliable predictor of the average diel ranges in both seawater temperature and pH. These results demonstrate that there is widespread environmental variability on diel timescales within coral reefs related to water column depth, which needs to be included in assessments of how global change will locally affect reef ecosystems.