气候变化领域集成服务门户(CCPortal): Exceptional hydrological stability of a Sphagnum-dominated peatland over the late Holocene

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DOI	10.1016/j.quascirev.2020.106180
	Exceptional hydrological stability of a Sphagnum-dominated peatland over the late Holocene
	Marcisz K.; Kołaczek P.; Gałka M.; Diaconu A.-C.; Lamentowicz M.
发表日期	2020
ISSN	0277-3791
卷号	231
英文摘要	Lowering of the water table and substantial drying are observed in peatlands worldwide. A significant drying of European peatlands in the last 200–300 years influenced the vegetation, lowered carbon storage potential in peatlands, and modified microbial diversity. Here, we reconstructed in high resolution hydrological changes, local and extra-local vegetation composition, and fire activity based on a peat core from a Sphagnum-dominated peatland located in a young glacial landscape in Central Eastern Europe, NE Poland. The last ca. 1500 years of history of the Jaczno bog has been supported by a dense accelerator mass spectrometry (AMS) radiocarbon (14C) dating resolution: 20 dates per 400 cm of the peat profile. We also investigated changes in the functional and morphological traits of testate amoebae as well as the functional diversity of testate amoeba communities over time. Our reconstruction showed a rare case of hydrological stability in the peatland over the late Holocene, and no dry shifts were recorded during the study period. Relatively stable hydrological conditions and undisturbed Sphagnum growth enabled the bog to maintain notably high peat accumulation rates. Although increasing human impact has been recorded in the last ca. 400 years, we did not reconstruct strong disturbances (e.g., vast deforestations, intensive grazing or farming, fires) influencing the site. Compared with other hydrological records from Europe, the Jaczno bog was one of the few bogs in Central and Eastern Europe that did not experience drying during the Little Ice Age. Moreover, the traits and functional diversity of testate amoebae did not show any critical turnover. In the last 70 years, human impact on the site decreased, and the area became afforested. Unlike most of the European peatlands, the Jaczno bog possesses high water tables up to the present time. Therefore, our data suggest that nature conservation practices, which target high water tables, are essential to maintain peatlands as a sink and not as a source of carbon in the future. © 2020 The Authors
英文关键词	Europe; Functional traits; Holocene; Little Ice Age; Mixotrophy; Morphological traits; Multi-proxy; Paleogeography; Testate amoebae; Vegetation dynamics
语种	英语
scopus关键词	Conservation; Deforestation; Digital storage; Drying; Glacial geology; Groundwater; Mass spectrometry; Peat; Protozoa; Vegetation; Europe; Functional traits; Holocenes; Little Ice Age; Mixotrophy; Morphological traits; Multi proxies; Paleogeography; Testate amoebae; Vegetation dynamics; Wetlands; anthropogenic effect; bog; carbon storage; Holocene; hydrological change; landscape; Little Ice Age; nature conservation; peatland; protist; reconstruction; species diversity; water table; Poland [Central Europe]; Sphagnum
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151582
作者单位	Laboratory of Climate Change Ecology, Adam Mickiewicz University, Poznań, Bogumiła Krygowskiego 10, Poznań, 61-680, Poland; Department of Geobotany and Plant Ecology, University of Lodz, Faculty of Biology and Environmental Protection, 12/16 Banacha Str., Lodz, Poland; Department of Geology, Babeş-Bolyai University, Kogalniceanu, 1, Cluj-Napoca, 400084, Romania
推荐引用方式 GB/T 7714	Marcisz K.,Kołaczek P.,Gałka M.,et al. Exceptional hydrological stability of a Sphagnum-dominated peatland over the late Holocene[J],2020,231.
APA	Marcisz K.,Kołaczek P.,Gałka M.,Diaconu A.-C.,&Lamentowicz M..(2020).Exceptional hydrological stability of a Sphagnum-dominated peatland over the late Holocene.Quaternary Science Reviews,231.
MLA	Marcisz K.,et al."Exceptional hydrological stability of a Sphagnum-dominated peatland over the late Holocene".Quaternary Science Reviews 231(2020).