气候变化领域集成服务门户(CCPortal): Dissecting coral recovery: bleaching reduces reproductive output in Acropora millepora

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DOI	10.1007/s00338-024-02483-y
	Dissecting coral recovery: bleaching reduces reproductive output in Acropora millepora
	Briggs, Nico D.; Page, Cathie A.; Giuliano, Christine; Alessi, Cinzia; Hoogenboom, Mia; Bay, Line K.; Randall, Carly J.
发表日期	2024
ISSN	0722-4028
EISSN	1432-0975
起始页码	43
结束页码	3
卷号	43 期号:3
英文摘要	Increasingly frequent and severe bleaching events driven by climate change are decreasing coral populations worldwide. Recovery of these populations relies on reproduction by the survivors of such events including local and upstream larval sources. Yet, corals that survive bleaching may be impaired by sublethal effects that suppress reproduction, reducing larval input to reefs, and consequently impeding recovery. We investigated the impact of the 2020 mass-bleaching event on Acropora millepora reproduction on inshore, turbid reefs in Woppaburra sea Country (the Keppel Islands), to improve our understanding of the effects of bleaching on coral populations. A. millepora experienced high bleaching incidence but low mortality across the island group during this event and thus constituted an ideal population to investigate potential sublethal effects on reproductive output. Six months after the heat wave, and just prior to spawning, we collected, decalcified, and dissected samples from 94 tagged A. millepora colonies with a known 2020 bleaching response, to investigate the relationships between stress severity and reproduction. Despite having regained their pigmentation, we detected a significant reduction in fecundity in colonies that had bleached severely. Considering the impact of the bleaching event on the coral population sampled (i.e., mortality, bleaching severity and colony size), coupled with reductions in fecundity, we estimated a total decrease in population-level reproductive output of 21%. These results suggest that reduced reproductive output may impact recovery of coral populations following bleaching and should be considered alongside traditional estimates of coral mortality.
英文关键词	Fecundity; Egg size; Bleaching severity; Sublethal effects; Climate change; Ocean warming
语种	英语
WOS研究方向	Marine & Freshwater Biology
WOS类目	Marine & Freshwater Biology
WOS记录号	WOS:001187440400001
来源期刊	CORAL REEFS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/309809
作者单位	James Cook University; Australian Institute of Marine Science; James Cook University; Universite Nouvelle Caledonie
推荐引用方式 GB/T 7714	Briggs, Nico D.,Page, Cathie A.,Giuliano, Christine,et al. Dissecting coral recovery: bleaching reduces reproductive output in Acropora millepora[J],2024,43(3).
APA	Briggs, Nico D..,Page, Cathie A..,Giuliano, Christine.,Alessi, Cinzia.,Hoogenboom, Mia.,...&Randall, Carly J..(2024).Dissecting coral recovery: bleaching reduces reproductive output in Acropora millepora.CORAL REEFS,43(3).
MLA	Briggs, Nico D.,et al."Dissecting coral recovery: bleaching reduces reproductive output in Acropora millepora".CORAL REEFS 43.3(2024).