气候变化领域集成服务门户(CCPortal): Freshwater pearl mussels from northern Sweden serve as long-term; high-resolution stream water isotope recorders

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DOI	10.5194/hess-24-673-2020
	Freshwater pearl mussels from northern Sweden serve as long-term; high-resolution stream water isotope recorders
	Schöne B.R.; Meret A.E.; Baier S.M.; Fiebig J.; Esper J.; Mcdonnell J.; Pfister L.
发表日期	2020
ISSN	1027-5606
起始页码	673
结束页码	696
卷号	24 期号:2
英文摘要	The stable isotope composition of lacustrine sediments is routinely used to infer Late Holocene changes in precipitation over Scandinavia and, ultimately, atmospheric circulation dynamics in the North Atlantic realm. However, such archives only provide a low temporal resolution (ca. 15 years), precluding the ability to identify changes on inter-annual and quasi-decadal timescales. Here, we present a new, high-resolution reconstruction using shells of freshwater pearl mussels, iMargaritifera margaritifera/i, from three streams in northern Sweden. We present seasonally to annually resolved, calendar-aligned stable oxygen and carbon isotope data from 10 specimens, covering the time interval from 1819 to 1998. The bivalves studied formed their shells near equilibrium with the oxygen isotope signature of ambient water and, thus, reflect hydrological processes in the catchment as well as changes, albeit damped, in the isotope signature of local atmospheric precipitation. The shell oxygen isotopes were significantly correlated with the North Atlantic Oscillation index (up to 56&% explained variability), suggesting that the moisture that winter precipitation formed from originated predominantly in the North Atlantic during span classCombining double low line"inline-formula"NAO+/span years but in the Arctic during span classCombining double low line"inline-formula"NAO-/span years. The isotope signature of winter precipitation was attenuated in the stream water, and this damping effect was eventually recorded by the shells. Shell stable carbon isotope values did not show consistent ontogenetic trends, but rather oscillated around an average that ranged from ca. span classCombining double low line"inline-formula"-12.00/span to span classCombining double low line"inline-formula"-13.00/span&‰ among the streams studied. Results of this study contribute to an improved understanding of climate dynamics in Scandinavia and the North Atlantic sector and can help to constrain eco-hydrological changes in riverine ecosystems. Moreover, long isotope records of precipitation and streamflow are pivotal to improve our understanding and modeling of hydrological, ecological, biogeochemical and atmospheric processes. Our new approach offers a much higher temporal resolution and superior dating control than data from existing archives. © 2020 BMJ Publishing Group. All rights reserved.
语种	英语
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159502
作者单位	Schöne, B.R., Institute of Geosciences, University of Mainz, Mainz, 55128, Germany; Meret, A.E., Naturhistoriska riksmuseet, Stockholm, 114 18, Sweden; Baier, S.M., Agilent Technologies Sales and Services GmbH and Co. KG, Frankfurt am Main, 60528, Germany; Fiebig, J., Institute of Geosciences, J. W. Goethe University, Frankfurt am Main, 60438, Germany; Esper, J., Department of Geography, University of Mainz, Mainz, 55128, Germany; Mcdonnell, J., Global Institute for Water Security, University of Saskatchewan, Saskatoon, SK S7N 3H5, Canada; Pfister, L., University of Luxembourg, Faculty of Science, Technology and Medicine, 2 Avenue de l'Université, Esch-sur-Alzette, 4365, Luxembourg
推荐引用方式 GB/T 7714	Schöne B.R.,Meret A.E.,Baier S.M.,et al. Freshwater pearl mussels from northern Sweden serve as long-term; high-resolution stream water isotope recorders[J],2020,24(2).
APA	Schöne B.R..,Meret A.E..,Baier S.M..,Fiebig J..,Esper J..,...&Pfister L..(2020).Freshwater pearl mussels from northern Sweden serve as long-term; high-resolution stream water isotope recorders.Hydrology and Earth System Sciences,24(2).
MLA	Schöne B.R.,et al."Freshwater pearl mussels from northern Sweden serve as long-term; high-resolution stream water isotope recorders".Hydrology and Earth System Sciences 24.2(2020).