气候变化领域集成服务门户(CCPortal): Spatial distribution of surface-sediment diatom assemblages from 45 Tibetan Plateau lakes and the development of a salinity transfer function

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DOI	10.1016/j.ecolind.2023.110952
	Spatial distribution of surface-sediment diatom assemblages from 45 Tibetan Plateau lakes and the development of a salinity transfer function
	Yu, Siwei; Wang, Junbo; Ruehland, Kathleen M.; Zhu, Liping; Ju, Jianting; Liu, Chong; Ma, Qingfeng; Smol, John P.
发表日期	2023
ISSN	1470-160X
EISSN	1872-7034
卷号	155
英文摘要	The Tibetan Plateau (TP) is often referred to as the Asian Water Tower, as it plays a crucial role in supplying water for similar to 1.9 billion people. Lakes in this arid mountain region have a wide salinity gradient and are sensitive to the complex interactions between climate and the water cycle, affecting aquatic ecosystems and species distributions. Here, we analyzed relationships between measured environmental variables and the spatial distribution of surface sediment diatom assemblages from 45 lakes located throughout the TP with the intention of developing a diatom-inference model for salinity. Diatom assemblage composition and diversity differed among lakes from the western (W), southern (S), northern (N), and southeastern (E) regions of the TP. The most common taxa observed in the lake set, Pantocsekiella ocellata, Nitzschia palea, and Staurosira venter, tended to have widespread distributions across the TP. In general, diatom diversity and richness tended to be highest in lakes with salinity concentrations between 0.1 and 10 g/L and were lowest in high salinity lakes (>20 g/L) of the N region. Canonical correspondence analysis (CCA) identified lake water salinity and maximum lake depth as explaining a statistically significant portion of diatom assemblage variation. Weighted-averaging (WA) was used to develop a diatom-based salinity inference model (R-jack(2) = 0.71, RMSEPjack = 0.28) based on diatom optima from freshwater to meso-hyposaline lakes of the TP. Diatom-salinity reconstructions and changes in diatom community composition can potentially be used to track long-term patterns in climate and environmental conditions across the highly complex mountain landscape of the TP.
关键词	Diatoms Tibetan Plateau Spatial distribution Salinity Transfer function
英文关键词	INFERENCE MODELS; CLIMATE-CHANGE; NAM CO; WATER; RESPONSES; PALEOLIMNOLOGY; RECONSTRUCTION; PERMAFROST; VARIABLES; IMPACTS
WOS研究方向	Biodiversity Conservation ; Environmental Sciences
WOS记录号	WOS:001084464500001
来源期刊	ECOLOGICAL INDICATORS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283808
作者单位	Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS; Queens University - Canada; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Yu, Siwei,Wang, Junbo,Ruehland, Kathleen M.,et al. Spatial distribution of surface-sediment diatom assemblages from 45 Tibetan Plateau lakes and the development of a salinity transfer function[J]. 中国科学院青藏高原研究所,2023,155.
APA	Yu, Siwei.,Wang, Junbo.,Ruehland, Kathleen M..,Zhu, Liping.,Ju, Jianting.,...&Smol, John P..(2023).Spatial distribution of surface-sediment diatom assemblages from 45 Tibetan Plateau lakes and the development of a salinity transfer function.ECOLOGICAL INDICATORS,155.
MLA	Yu, Siwei,et al."Spatial distribution of surface-sediment diatom assemblages from 45 Tibetan Plateau lakes and the development of a salinity transfer function".ECOLOGICAL INDICATORS 155(2023).