Do changes in water depth and water level influence the diatom diversity of Yunlong Lake, in Yunnan Province, Southwest
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ORIGINAL PAPER
Do changes in water depth and water level influence the diatom diversity of Yunlong Lake, in Yunnan Province, Southwest China? Yafei Zou . Luo Wang . Huiming Xu . Yao Yan . Jiaoyang Zhang . Yuan Liu . Peng Li . Zhiyuan Peng . Zhaoyan Gu . Houyuan Lu
Received: 1 June 2017 / Accepted: 29 May 2020 Ó Springer Nature B.V. 2020
Abstract Exploring whether diatom diversity in a lake sediment core is representative of that of the entire lake is important for determining the response of lake diatom diversity to global climatic warming. In this study, Yunlong Lake, an alpine lake located in Yunnan Province, Southwest China, was investigated to explore this question over both space and time. Spatially, we investigated diatom diversity patterns in 62 surface sediment samples from different locations and depth zones of Yunlong lake and found essentially Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10933-020-00137-x) contains supplementary material, which is available to authorized users.
constant diatom diversity across the entire lake basin. Temporally, we studied a well-dated sediment core from the lake center to explore whether long-term water-level changes influenced diatom diversity over the last * 100 years. Changes in the annual average sediment accumulation rates indicate that the water level of Yunlong Lake increased substantially after the construction of a dam. However, there is no obvious relationship between diatom diversity and water-level changes, which suggests at this site long-term waterlevel changes did not influence diatom diversity. Comparative analysis of the results for Yunlong Lake with those for other lakes indicates that for relatively strongly mixed lakes with a simple morphology and
Y. Zou Yunnan Key Laboratory of Earth System Science, Yunnan University, Kunming 650500, China e-mail: [email protected]
H. Xu Administration Bureau for Yunlong, Tianchi National Nature Reserve, Yunlong 672700, China e-mail: [email protected]
L. Wang (&) Z. Gu H. Lu Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China e-mail: [email protected]
Y. Yan J. Zhang Y. Liu P. Li Z. Peng School of the Earth and Resources, University of Geosciences, Beijing 100083, China e-mail: [email protected]
Z. Gu e-mail: [email protected] H. Lu e-mail: [email protected] L. Wang Z. Gu H. Lu University of Chinese Academy of Sciences, Beijing 100049, China
J. Zhang e-mail: [email protected] Y. Liu e-mail: [email protected] P. Li e-mail: [email protected] Z. Peng e-mail: [email protected]
123
J Paleolimnol
uniform shoreline microhabitat, such as Yunlong Lake, differences in water depth and changes in water level may not influence diatom diversity. In such cases, the diatom diversity from a sediment core is likely to be representative of that of the entire lake during specific time intervals
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