Amphistegina lobifera foraminifera are excellent bioindicators of heat stress on high latitude Red Sea reefs

Amphistegina lobifera foraminifera are excellent bioindicators of heat stress on high latitude Red Sea reefs
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Amphistegina lobifera foraminifera 是高纬度红海珊瑚礁热应激的极佳生物指示剂

DOI:
10.1007/s00338-022-02264-5
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发表时间:
2022
期刊:
影响因子:
3.5
通讯作者:
Terraneo, Tullia I.
Terraneo, Tullia I.
中科院分区:
生物学2区
文献类型:
--
作者:
Humphreys, Alexander F.;Abdulla, Ameer;Sherman, Sofia;Levine, Jaclyn;Arista, Katelyn;Jones, Laura;Hoffman, Charlotte;Palavicini, Giacomo;Vimercati, Silvia;Terraneo, Tullia I.

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全球珊瑚礁正在减少,异常炎热的气温承担着责任。有孔生物指标很重要,因为它们记录了数百年至数千年的历史珊瑚礁压力,而潜水员调查提供的是几十年。对于一个缺乏系统的长期珊瑚礁监测计划的地区来说,在红海使用生物指标是令人信服的。虽然基于有孔虫的指数可以重建珊瑚礁上的营养胁迫历史,但缺乏对温度做出反应的同等生物指标。这项研究利用在北红海东部边缘和亚喀巴湾采集的一组表层沉积物样本,表明有孔虫科--特别是有孔虫科--的相对丰度与热应激密切相关,就像最近在南太平洋报道的那样。这一结果具有重要意义,至少有三个原因。首先,红海拥有地球上一些最北端的珊瑚礁。在这里建立一个热生物指示器证实了该战略可以部署在高纬度珊瑚礁上,这些珊瑚礁不成比例地受到极端高温的困扰。其次,被考虑的珊瑚礁和它们所拥有的有孔虫,以其热弹性而闻名。有孔虫生物指示器以前从未在以这种方式适应的珊瑚礁上进行过试验。最后,作为印度洋的一个受限制的分支,红海的地方病程度特别高。我们提出的生物指标显然没有受到地方病的影响。我们的发现支持扩大部署基于两栖动物的珊瑚礁生物指示器。
Coral reefs are in global decline and anomalously hot temperatures shoulder the blame. Foraminferal bioindicators are important because they record historical reef stress over periods of centuries to millennia, as compared to the few decades offered by diver surveys. For a region lacking systematic long-term reef monitoring programs, the use of bioindicators in the Red Sea is compelling. Whereas foraminfera-based indices exist to reconstruct histories of nutrient stress on reefs, there is a paucity of equivalent bioindicators that respond to temperature. Capitalizing on a portfolio of surficial sediment samples collected along the eastern margin of the N. Red Sea and Gulf of Aqaba, this study shows that the relative abundance of Amphisteginidae foraminifera—specificallyAmphistegina lobifera—closely track heat stress, as has recently been reported for this family in the S. Pacific. This result is consequential for at least three reasons. First, the Red Sea hosts some of the most northerly coral reefs on Earth. Establishment of a thermal bioindicator here confirms the strategy can be deployed on high latitudes reefs, which are disproportionally afflicted with heat extremes. Second, the considered reefs, and the foraminifera they host, are famed for their thermal resilience. Foraminiferal bioindicators have not previously been trialed on reefs that have adapted in this way. Finally, as a restricted offshoot of the Indian Ocean, the level of endemism in the Red Sea is especially high. The bioindicator that we propose is apparently not compromised by endemism. Our findings advocate for an expanded deployment ofAmphistegina-based reef bioindicators.
有孔虫与藻类共生体的漂白:对珊瑚礁监测和风险评估的影响
DOI: --
发表时间: 2006
期刊:
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作者:
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Amphistegina gibbosa d’Orbigny(有孔虫纲)的漂白:使用可见光和紫外线进行的实验室实验观察
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发表时间: 2003
期刊:
影响因子: --
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DOI: 10.1130/g30710.1
发表时间: 2010-03-01
期刊: GEOLOGY
影响因子: 5.8
作者:
Purkis, S. J.;Rowlands, G. P.;Renaud, P. G.
通讯作者: Renaud, P. G.
DOI: 10.1007/s00227-021-03984-y
发表时间: 2021
期刊: Marine Biology
影响因子: 2.4
作者:
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DOI: 10.1007/s00338-021-02186-8
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