Catastrophic bleaching in protected reefs of the Southern Great Barrier Reef

IF 5.1 2区地球科学 Q1 LIMNOLOGY

Limnology and Oceanography Letters Pub Date : 2025-01-16 DOI:10.1002/lol2.10456

Maria Byrne, Alexander Waller, Matthew Clements, Aisling S. Kelly, Michael J. Kingsford, Bailu Liu, Claire E. Reymond, Ana Vila‐Concejo, Monique Webb, Kate Whitton, Shawna A. Foo

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Abstract

The iconic Great Barrier Reef (GBR) experienced mass coral bleaching in early 2024. In the southern GBR, heat stress triggered severe and widespread bleaching to levels not previously recorded and impacted a diverse range of coral genera at One Tree Reef (OTR). Over 161 d, we tracked the health of 462 coral colonies from heatwave peak to autumn and winter cooling. In February and April, 66% and 80% of the colonies were bleached, respectively. By May, 44% of the bleached colonies were dead and 53% in July. In July, 31% of colonies were still bleached and 16% recovered. Goniopora developed black band disease contributing to high mortality. Colony collapse occurred in Acropora (95% mortality) with accumulation of algal‐fouled fragments. In‐water tracking of individual colonies showed rapid bleaching, disease onset and mortality. The protected status and offshore location did not protect OTR from heat stress bleaching and mortality.

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南大堡礁受保护的珊瑚礁发生灾难性的白化

标志性的大堡礁（GBR）在2024年初经历了大规模珊瑚白化。在GBR南部，热应激引发了严重和广泛的白化，达到了前所未有的水平，并影响了一树礁（OTR）的多种珊瑚属。在161 d的时间里，我们跟踪了462个珊瑚群落从热浪高峰到秋冬降温的健康状况。在2月和4月，分别有66%和80%的蜂群被漂白。到5月，44%的白化蜂群死亡，7月为53%。7月，31%的珊瑚群仍在漂白，16%的珊瑚群恢复了。弓形虫发展成黑带病，造成高死亡率。随着藻类污染碎片的积累，鹿角虫发生了群体崩溃（95%死亡率）。单个菌落在水中的追踪显示出迅速的白化、发病和死亡。受保护的状态和离岸位置并不能保护OTR免受热应激白化和死亡。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Limnology and Oceanography Letters Multiple-

CiteScore

10.00

自引率

3.80%

发文量

审稿时长

25 weeks

期刊介绍： Limnology and Oceanography Letters (LO-Letters) serves as a platform for communicating the latest innovative and trend-setting research in the aquatic sciences. Manuscripts submitted to LO-Letters are expected to present high-impact, cutting-edge results, discoveries, or conceptual developments across all areas of limnology and oceanography, including their integration. Selection criteria for manuscripts include their broad relevance to the field, strong empirical and conceptual foundations, succinct and elegant conclusions, and potential to advance knowledge in aquatic sciences.