Incorporation of Dissolved Heavy Metals Into the Skeleton of Porites Corals Based on Multi-Element Culturing Experiments

IF 2.9 2区 地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS
Sarina Schmidt, Ed C. Hathorne, Joachim Schönfeld, Kathleen J. Gosnell, Dieter Garbe-Schönberg
{"title":"Incorporation of Dissolved Heavy Metals Into the Skeleton of Porites Corals Based on Multi-Element Culturing Experiments","authors":"Sarina Schmidt,&nbsp;Ed C. Hathorne,&nbsp;Joachim Schönfeld,&nbsp;Kathleen J. Gosnell,&nbsp;Dieter Garbe-Schönberg","doi":"10.1029/2022GC010726","DOIUrl":null,"url":null,"abstract":"<p>Anthropogenic activities increase the level of dissolved heavy metals in some tropical near-shore environments threatening reef ecosystems. The skeleton of stony corals like <i>Porites</i> species potentially provides a high-resolution geochemical archive for past heavy metal concentrations, with potentially century long records revealing baseline values before large-scale human disturbance. However, few data exist for heavy metal partitioning into coral skeleton aragonite. To address this, culturing experiments exposing <i>Porites lobata</i> and <i>Porites lichen</i> to a mixture of dissolved Cr, Mn, Ni, Cu, Zn, Ag, Cd, Sn, Hg, and Pb over a wide concentration range have been performed. Water samples were taken frequently to monitor changes in the heavy metal concentration. Laser ablation ICP-MS measurements of the coral aragonite revealed metal concentrations that were positively correlated with Cr, Mn, Ni, Zn, Ag, Cd, and Pb concentrations in seawater. The D<sub>TE</sub> values for most metals appear dependent on the seawater metal content, approximating a power law, and therefore stabilize at higher seawater metal/Ca ratios. The partitioning of Pb into the coral skeleton is a notable exception, with D<sub>Pb</sub> being stable around 2 to 1 across a large range of “natural” to highly polluted seawater Pb concentrations. This and the general agreement with partition coefficients estimated by previous work suggests that the reconstruction of the heavy metal concentration in seawater for ecosystem monitoring is possible. However, the high variability within and between coral colonies requires further study and suggests that multiple records from multiple coral colonies should be combined to obtain robust reconstructions.</p>","PeriodicalId":50422,"journal":{"name":"Geochemistry Geophysics Geosystems","volume":null,"pages":null},"PeriodicalIF":2.9000,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2022GC010726","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geochemistry Geophysics Geosystems","FirstCategoryId":"89","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1029/2022GC010726","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
引用次数: 0

Abstract

Anthropogenic activities increase the level of dissolved heavy metals in some tropical near-shore environments threatening reef ecosystems. The skeleton of stony corals like Porites species potentially provides a high-resolution geochemical archive for past heavy metal concentrations, with potentially century long records revealing baseline values before large-scale human disturbance. However, few data exist for heavy metal partitioning into coral skeleton aragonite. To address this, culturing experiments exposing Porites lobata and Porites lichen to a mixture of dissolved Cr, Mn, Ni, Cu, Zn, Ag, Cd, Sn, Hg, and Pb over a wide concentration range have been performed. Water samples were taken frequently to monitor changes in the heavy metal concentration. Laser ablation ICP-MS measurements of the coral aragonite revealed metal concentrations that were positively correlated with Cr, Mn, Ni, Zn, Ag, Cd, and Pb concentrations in seawater. The DTE values for most metals appear dependent on the seawater metal content, approximating a power law, and therefore stabilize at higher seawater metal/Ca ratios. The partitioning of Pb into the coral skeleton is a notable exception, with DPb being stable around 2 to 1 across a large range of “natural” to highly polluted seawater Pb concentrations. This and the general agreement with partition coefficients estimated by previous work suggests that the reconstruction of the heavy metal concentration in seawater for ecosystem monitoring is possible. However, the high variability within and between coral colonies requires further study and suggests that multiple records from multiple coral colonies should be combined to obtain robust reconstructions.

Abstract Image

基于多元素培养实验的多孔珊瑚骨架中溶解重金属的融入情况
人类活动增加了一些热带近海环境中的溶解重金属含量,威胁着珊瑚礁生态系统。石珊瑚(Porites)等石珊瑚的骨架可能为过去的重金属浓度提供了高分辨率的地球化学档案,可能长达一个世纪的记录揭示了大规模人类干扰之前的基线值。然而,有关重金属在珊瑚骨架文石中分配的数据却很少。为了解决这个问题,我们进行了培养实验,将小叶茯苓和地衣茯苓暴露在浓度范围很广的溶解铬、锰、镍、铜、锌、银、镉、锡、汞和铅的混合物中。经常采集水样以监测重金属浓度的变化。对珊瑚文石进行的激光烧蚀 ICP-MS 测量显示,其金属浓度与海水中的铬、锰、镍、锌、银、镉和铅浓度呈正相关。大多数金属的 DTE 值似乎取决于海水中的金属含量,近似于幂律,因此在海水金属/Ca 比值较高时趋于稳定。铅在珊瑚骨骼中的分配是一个明显的例外,从 "自然 "到高度污染的海水铅浓度范围内,DPb 稳定在 2:1 左右。这一点以及与以往工作估算的分配系数的基本一致表明,重建海水中的重金属浓度用于生态系统监测是可能的。不过,珊瑚群内部和珊瑚群之间的高变异性需要进一步研究,这也表明应将来自多个珊瑚群的多条记录结合起来,以获得稳健的重建结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Geochemistry Geophysics Geosystems
Geochemistry Geophysics Geosystems 地学-地球化学与地球物理
CiteScore
5.90
自引率
11.40%
发文量
252
审稿时长
1 months
期刊介绍: Geochemistry, Geophysics, Geosystems (G3) publishes research papers on Earth and planetary processes with a focus on understanding the Earth as a system. Observational, experimental, and theoretical investigations of the solid Earth, hydrosphere, atmosphere, biosphere, and solar system at all spatial and temporal scales are welcome. Articles should be of broad interest, and interdisciplinary approaches are encouraged. Areas of interest for this peer-reviewed journal include, but are not limited to: The physics and chemistry of the Earth, including its structure, composition, physical properties, dynamics, and evolution Principles and applications of geochemical proxies to studies of Earth history The physical properties, composition, and temporal evolution of the Earth''s major reservoirs and the coupling between them The dynamics of geochemical and biogeochemical cycles at all spatial and temporal scales Physical and cosmochemical constraints on the composition, origin, and evolution of the Earth and other terrestrial planets The chemistry and physics of solar system materials that are relevant to the formation, evolution, and current state of the Earth and the planets Advances in modeling, observation, and experimentation that are of widespread interest in the geosciences.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信