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| DOI | 10.1007/s00227-024-04432-3 |
| No coral recovery three years after a major bleaching event in reefs in the Southwestern Atlantic refugium | |
| 发表日期 | 2024 |
| ISSN | 0025-3162 |
| EISSN | 1432-1793 |
| 起始页码 | 171 |
| 结束页码 | 5 |
| 卷号 | 171期号:5 |
| 英文摘要 | Mass bleaching events are growing in duration and intensity. Besides causing extensive mortality, the progressively shorter time between events disrupts the ability of reefs to recover. The unique reefs of the Southwestern Atlantic are often considered climate refugia as they have suffered less bleaching-related mortality when compared to Indo-Pacific and Caribbean reefs. However, their recovery capacity still requires investigation. In 2019, an unprecedented heatwave triggered the most severe bleaching episode recorded for Southwestern Atlantic reefs. Therefore, this study aimed to (i) document the bleaching incidence and mortality during the heatwave, and (ii) assess coral recovery over 3 years. We measured bleaching incidence and monitored coral cover through surveys in three Southern Bahia (central Brazilian coast) reefs before, during and after thermal stress. Our findings show that coral assemblages were exposed to a 5-month-long thermal anomaly, experiencing thermal stress peaking at 14.1 degrees C-weeks. Roughly 70% of the coral cover was bleached, resulting in a decline of similar to 40%. Millepora alcicornis, Mussismilia braziliensis, and Mussismilia harttii were among species that mortality exceeded 50%. After 3 years, corals showed no increase in cover neither at assemblage nor species levels. This constrained recovery capacity may indicate the breakdown of the refugium, and also trade-off for resistance. Typical features of the region, such as high turbidity and the dominance of massive corals, provide these reefs with bleaching resistance, but likely also limit their recovery. With the anticipated effects of the 2023-24 El Nino-Southern Oscillation in the southern hemisphere, still unrecovered Southwestern Atlantic reefs face a substantial challenge. |
| 英文关键词 | Brazil; Climate change; Coral cover; Mortality; Resilience; Thermal stress |
| 语种 | 英语 |
| WOS研究方向 | Marine & Freshwater Biology |
| WOS类目 | Marine & Freshwater Biology |
| WOS记录号 | WOS:001205515900002 |
| 来源期刊 | MARINE BIOLOGY
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/289501 |
| 作者单位 | Universidade de Sao Paulo; Universidade Federal do Rio Grande; Universidade Federal do Rio de Janeiro; Universidade de Sao Paulo; Universidade Federal do Rio de Janeiro; Universidade Federal do Rio Grande do Norte; Universidade Federal de Santa Catarina (UFSC) |
| 推荐引用方式 GB/T 7714 | . No coral recovery three years after a major bleaching event in reefs in the Southwestern Atlantic refugium[J],2024,171(5). |
| APA | (2024).No coral recovery three years after a major bleaching event in reefs in the Southwestern Atlantic refugium.MARINE BIOLOGY,171(5). |
| MLA | "No coral recovery three years after a major bleaching event in reefs in the Southwestern Atlantic refugium".MARINE BIOLOGY 171.5(2024). |
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