气候变化领域集成服务门户(CCPortal): A robust vegetation-based elevation transfer method for reconstructing Arctic polygon mire palaeo-microtopography

CCPortal

DOI	10.1016/j.palaeo.2018.12.019
	A robust vegetation-based elevation transfer method for reconstructing Arctic polygon mire palaeo-microtopography
	Teltewskoi A.; Michaelis D.; Schirrmeister L.; Joosten H.; Schiefelbein U.; Manthey M.
发表日期	2019
ISSN	0031-0182
起始页码	12
结束页码	27
卷号	522
英文摘要	The reconstruction of past environments by means of macrofossil and pollen analysis is commonly based on the modern ecological preferences of the taxa that may have produced these fossils. Here we present a modelling approach, in which we use modern vegetation–surface height relationships to quantify past surface heights in an Arctic ice-wedge polygon mire. Vegetation composition and ground surface height (GSH) were assessed in a polygon mire near Kytalyk (Northeastern Siberia). Cluster analysis revealed five plant communities, which are clearly separated with respect to ground surface height, frost surface height and coverages of open water and vegetation. Based on the composition of modern vegetation we constructed two sets of potential fossil types (plant macrofossils and pollen), an extensive one and a more restricted one to reflect different conditions of preservation and recognisability. We applied Canonical Correspondence Analysis to model the relationships between potential fossil types and measured GSH. Both models show a strong relationship between modelled and measured GSH values and a high accuracy in prediction. Finally, we used the models to predict GSH values for Holocene peat samples and found a fair correspondence with expert-based multi-proxy reconstruction of wetness conditions, even though only a minor part of the encountered fossils were represented in the GSH models, illustrating the robustness of the approach. Our approach can be used to reconstruct palaeoenvironmental conditions in a more objective way and can serve as a template for further palaeoecological studies. © 2019 Elsevier B.V.
英文关键词	Active layer; Fossilization; Macrofossil; Permafrost; Pollen; Quantitative reconstruction
语种	英语
scopus关键词	active layer; fossil record; Holocene; microtopography; mire; numerical method; open water; paleoecology; paleoenvironment; permafrost; plant community; pollen; polygon; quantitative analysis; reconstruction; Arctic; Siberia
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151001
作者单位	Institute of Botany and Landscape Ecology, Greifswald University, partner in the Greifswald Mire Centre, Soldmannstraße 15, Greifswald, D-17487, Germany; Department of Permafrost Research, Alfred Wegener Institute Helmholtz-Centre for Polar and Marine Research, Telegrafenberg A45, Potsdam, D-14473, Germany; Blücherstr. 71, Rostock, D-18055, Germany
推荐引用方式 GB/T 7714	Teltewskoi A.,Michaelis D.,Schirrmeister L.,et al. A robust vegetation-based elevation transfer method for reconstructing Arctic polygon mire palaeo-microtopography[J],2019,522.
APA	Teltewskoi A.,Michaelis D.,Schirrmeister L.,Joosten H.,Schiefelbein U.,&Manthey M..(2019).A robust vegetation-based elevation transfer method for reconstructing Arctic polygon mire palaeo-microtopography.Palaeogeography, Palaeoclimatology, Palaeoecology,522.
MLA	Teltewskoi A.,et al."A robust vegetation-based elevation transfer method for reconstructing Arctic polygon mire palaeo-microtopography".Palaeogeography, Palaeoclimatology, Palaeoecology 522(2019).