Biological Response of Planktic Foraminifera to Decline in Seawater pH

doi:10.3390/biology11010098

	Biological Response of Planktic Foraminifera to Decline in Seawater pH
	Dong, Shuaishuai1 ; Lei, Yanli1,2,3 ; Bi, Hongsheng 4; Xu, Kuidong1,2,3 ; Li, Tiegang5 ; Jian, Zhimin 6
	2022
发表期刊	BIOLOGY-BASEL
卷号	11 期号:1 页码:12
通讯作者	Lei, Yanli(leiyanli@qdio.ac.cn) ; Li, Tiegang(tgli@fio.org.cn) ; Jian, Zhimin(jian@tongji.edu.cn)
摘要	Simple Summary The ocean absorbs large amounts of CO2 emitted by human activities, which leads to a decrease in seawater pH, and has the potential to cause damage to calcareous marine organisms. Planktic foraminifera are some of the most important calcareous marine organisms in the ocean, although the biological response of planktic foraminifera to the decline in seawater pH is still unknown. In this study, the biological response of planktic foraminifera to declining seawater pH was studied through a series of on-board experiments. The experimental results showed that the decrease in seawater pH adversely affected the biological processes of planktic foraminifera, resulting in weaker predation, slower growth, lighter shells, and more deformities. In addition, for the first time, we report that microalgae that live with planktic foraminifera were also killed under low-pH conditions. Several indices were established to quantify the relationships between the biological parameters of planktic foraminifera and seawater pH, which could be used to reconstruct the paleoceanographic seawater pH. This study provides experimental data to quantify the biological response of calcareous plankton to a decline in seawater pH. Understanding the way in which a decline in ocean pH can affect calcareous organisms could enhance our ability to predict the impacts of the potential decline in seawater pH on marine ecosystems, and could help to reconstruct the paleoceanographic events over a geological time scale. Planktic foraminifera are among the most important biological proxies for these studies; however, the existing research on planktic foraminifera is almost exclusively based on their geochemical indices, without the inclusion of information on their biological development. Through a series of on-board experiments in the western tropical Pacific (134 degrees 33 ' 54 '' E, 12 degrees 32 ' 47 '' N), the present study showed that the symbiont-bearing calcifier Trilobatus sacculifer-a planktic foraminifer-responded rapidly to a decline in seawater pH, including losing symbionts, bleaching, etc. Several indices were established to quantify the relationships between these biological parameters and seawater pH, which could be used to reconstruct the paleoceanographic seawater pH. We further postulated that the loss of symbionts in planktic foraminifera acts as an adaptive response to the stress of low pH. Our results indicate that an ongoing decline in seawater pH may hinder the growth and calcification of planktic foraminifera by altering their biological processes. A reduction in carbonate deposition and predation could have profound effects on the carbon cycle and energy flow in the marine food web.
关键词	biological response Trilobatus sacculifer seawater pH symbiont-bearing calcifiers bleaching on-board experiment
DOI	10.3390/biology11010098
收录类别	SCI
语种	英语
WOS研究方向	Life Sciences & Biomedicine - Other Topics
WOS类目	Biology
WOS记录号	WOS:000746254700001
出版者	MDPI
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/177736
专题	海洋生物分类与系统演化实验室
通讯作者	Lei, Yanli; Li, Tiegang; Jian, Zhimin
作者单位	1.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Mega Sci, Lab Marine Organism Taxon & Phylogeny, Qingdao 266071, Peoples R China 2.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Maryland, Ctr Environm Sci, Chesapeake Biol Lab, Solomon, MD 20688 USA 5.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China 6.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Dong, Shuaishuai,Lei, Yanli,Bi, Hongsheng,et al. Biological Response of Planktic Foraminifera to Decline in Seawater pH[J]. BIOLOGY-BASEL,2022,11(1):12.
APA	Dong, Shuaishuai,Lei, Yanli,Bi, Hongsheng,Xu, Kuidong,Li, Tiegang,&Jian, Zhimin.(2022).Biological Response of Planktic Foraminifera to Decline in Seawater pH.BIOLOGY-BASEL,11(1),12.
MLA	Dong, Shuaishuai,et al."Biological Response of Planktic Foraminifera to Decline in Seawater pH".BIOLOGY-BASEL 11.1(2022):12.

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