气候变化领域集成服务门户(CCPortal): Volcanic CO2 seep geochemistry and use in understanding ocean acidification

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DOI	10.1007/s10533-020-00737-9
	Volcanic CO2 seep geochemistry and use in understanding ocean acidification
	Aiuppa A.; Hall-Spencer J.M.; Milazzo M.; Turco G.; Caliro S.; Di Napoli R.
发表日期	2021
ISSN	1682563
起始页码	93
结束页码	115
卷号	152 期号:1
英文摘要	Ocean acidification is one of the most dramatic effects of the massive atmospheric release of anthropogenic carbon dioxide (CO2) that has occurred since the Industrial Revolution, although its effects on marine ecosystems are not well understood. Submarine volcanic hydrothermal fields have geochemical conditions that provide opportunities to characterise the effects of elevated levels of seawater CO2 on marine life in the field. Here, we review the geochemical aspects of shallow marine CO2-rich seeps worldwide, focusing on both gas composition and water chemistry. We then describe the geochemical effects of volcanic CO2 seepage on the overlying seawater column. We also present new geochemical data and the first synthesis of marine biological community changes from one of the best-studied marine CO2 seep sites in the world (off Vulcano Island, Sicily). In areas of intense bubbling, extremely high levels of pCO2 (> 10,000 μatm) result in low seawater pH (< 6) and undersaturation of aragonite and calcite in an area devoid of calcified organisms such as shelled molluscs and hard corals. Around 100–400 m away from the Vulcano seeps the geochemistry of the seawater becomes analogous to future ocean acidification conditions with dissolved carbon dioxide levels falling from 900 to 420 μatm as seawater pH rises from 7.6 to 8.0. Calcified species such as coralline algae and sea urchins fare increasingly well as sessile communities shift from domination by a few resilient species (such as uncalcified algae and polychaetes) to a diverse and complex community (including abundant calcified algae and sea urchins) as the seawater returns to ambient levels of CO2. Laboratory advances in our understanding of species sensitivity to high CO2 and low pH seawater, reveal how marine organisms react to simulated ocean acidification conditions (e.g., using energetic trade-offs for calcification, reproduction, growth and survival). Research at volcanic marine seeps, such as those off Vulcano, highlight consistent ecosystem responses to rising levels of seawater CO2, with the simplification of food webs, losses in functional diversity and reduced provisioning of goods and services for humans. © 2020, The Author(s).
英文关键词	Calcifying species; Ecosystem effects; Natural analogues; Submarine hydrothermalism
语种	英语
来源期刊	Biogeochemistry
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184662
作者单位	Dipartimento di Scienze della Terra e del Mare, Università di Palermo, Palermo, Italy; School of Biological and Marine Sciences, University of Plymouth, Plymouth, United Kingdom; Shimoda Marine Research Center, University of Tsukuba, Tsukuba, Japan; Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Vesuviano, Napoli, Italy
推荐引用方式 GB/T 7714	Aiuppa A.,Hall-Spencer J.M.,Milazzo M.,et al. Volcanic CO2 seep geochemistry and use in understanding ocean acidification[J],2021,152(1).
APA	Aiuppa A.,Hall-Spencer J.M.,Milazzo M.,Turco G.,Caliro S.,&Di Napoli R..(2021).Volcanic CO2 seep geochemistry and use in understanding ocean acidification.Biogeochemistry,152(1).
MLA	Aiuppa A.,et al."Volcanic CO2 seep geochemistry and use in understanding ocean acidification".Biogeochemistry 152.1(2021).