气候变化领域集成服务门户(CCPortal): Limited Carbonate Dissolution by Boring Microflora at Two Volcanically Acidified Temperate Sites: Ischia (Italy, Mediterranean Sea) and Faial (Azores, NE Atlantic Ocean)

CCPortal

DOI	10.1002/2016GB005575
	Limited Carbonate Dissolution by Boring Microflora at Two Volcanically Acidified Temperate Sites: Ischia (Italy, Mediterranean Sea) and Faial (Azores, NE Atlantic Ocean)
	Tribollet A.; Grange J.S.; Parra H.; Rodolfo-Metalpa R.; Carreiro-Silva M.
发表日期	2018
ISSN	0886-6236
EISSN	1944-9224
起始页码	78
结束页码	91
卷号	32 期号:1
英文摘要	In situ effects of ocean acidification on carbonate dissolution by microboring flora, also called biogenic dissolution, have only been studied once in tropical environments. Naturally acidified seawaters due to CO2 vents offer a perfect setting to study these effects in temperate systems. Three sites were selected at Ischia (Italy, Mediterranean Sea) with one experiencing ambient pH and the two others a mean pHT of 7.2 and 7.5. At Faial (Azores, NE Atlantic), one site with ambient pH and one acidified site with a mean pHT of 7.4 were selected. Experiments were carried out during 1.5 months and 6 months in Azores and Ischia, respectively, to determine the effects of OA on microboring communities in various carbonate substrates. Low pH influenced negatively boring microflora development by limiting their depth of penetration and abundance in substrates. Biogenic dissolution was thus reduced by a factor 3 to 7 depending on sites and substrate types. At sites with ambient pH in Faial, biogenic dissolution contributed up to 23% to the total weight loss, while it contributed less than 1% to the total weight loss of substrates at the acidified sites. Most of the dissolution at these sites was due to chemical dissolution (often Ω ≤ 1). Such conditions maintained microboring communities at a pioneer stage with a limited depth of penetration in substrates. Our results, together with previous findings that showed an increase of biogenic dissolution at pH > 7.7, suggest that there is a pH tipping point below which microborer development and thus carbonate biogenic dissolution is strongly limited. ©2017. American Geophysical Union. All Rights Reserved.
英文关键词	aragonite and calcite substrates; biogenic dissolution; boring microalgae; CO2 vents; temperate ecosystems
语种	英语
scopus关键词	aragonite; biogenic emission; carbon dioxide; dissolution; microalga; ocean acidification; pH; seawater; temperate environment; Atlantic Ocean; Atlantic Ocean (Northeast); Azores; Campania [Italy]; Faial; Ischia; Italy; Mediterranean Sea; Napoli [Campania]; Portugal
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129866
作者单位	IRD-Sorbonne Universités (UPMC Univ, Paris 06)-CNRS-MNHN, Laboratoire LOCEAN, Paris Cedex, France; IMAR-Institute of Marine Research, MARE—Marine and Environmental Sciences Centre, Horta, Portugal; UMR ENTROPIE, Centre IRD de Nouméa, Nouméa, New Caledonia
推荐引用方式 GB/T 7714	Tribollet A.,Grange J.S.,Parra H.,et al. Limited Carbonate Dissolution by Boring Microflora at Two Volcanically Acidified Temperate Sites: Ischia (Italy, Mediterranean Sea) and Faial (Azores, NE Atlantic Ocean)[J],2018,32(1).
APA	Tribollet A.,Grange J.S.,Parra H.,Rodolfo-Metalpa R.,&Carreiro-Silva M..(2018).Limited Carbonate Dissolution by Boring Microflora at Two Volcanically Acidified Temperate Sites: Ischia (Italy, Mediterranean Sea) and Faial (Azores, NE Atlantic Ocean).Global Biogeochemical Cycles,32(1).
MLA	Tribollet A.,et al."Limited Carbonate Dissolution by Boring Microflora at Two Volcanically Acidified Temperate Sites: Ischia (Italy, Mediterranean Sea) and Faial (Azores, NE Atlantic Ocean)".Global Biogeochemical Cycles 32.1(2018).