globalchange  > 气候变化事实与影响
DOI: 10.1016/j.watres.2019.01.056
Scopus ID: 2-s2.0-85061784383
Title:
Teleconnection between phytoplankton dynamics in north temperate lakes and global climatic oscillation by time-frequency analysis
Author: Xiao X.; He J.; Yu Y.; Cazelles B.; Li M.; Jiang Q.; Xu C.
Source Publication: Water Research
ISSN: 431354
Publishing Year: 2019
Volume: 154
pages begin: 267
pages end: 276
Language: 英语
Keyword: Chlorophyll a ; Hilbert-Huang transformation ; Lake ; Multivariate ENSO index (MEI) ; Time-frequency analysis ; Wavelet analysis
English Abstract: We are still facing the knowledge gap of how the water-quality extremes (i.e. phytoplankton blooms), their causes, severity or occurrence could be directly related to the climatic oscillation. Considering that the climatic and phytoplankton concentration time series are highly non-stationary, we applied the advanced time-frequency analysis - Ensemble Empirical Mode Decomposition (EEMD), Hilbert-Huang Spectrum (HHS) and Wavelet Analysis (WA) - to examine the variability of long term phytoplankton dynamics from 1986 to 2014 in five North Temperate Lakes (NTLs). These analysis techniques isolated five separate time series for the surface Chlorophyll a concentrations (CHL) of the five NTLs and a time series for the global climate oscillation (denoted by multivariate ENSO index, MEI), and showed that these time series generally operated at similar time scales. The long-term residual trends of decreasing were found in three lakes (i.e., BM, SP and TR lakes), which are the same to global climate dynamics (MEI). The wavelet analysis reveals strong coherency between MEI and CHL data sets for all lakes, with a periodicity of 64-months. Intuitive associations between the CHL and MEI data set showed that two types of ENSO (El Nino and La Nina) differ in their influences to CHL. Potential mechanisms relating the phytoplankton dynamics in NTLs to climatic oscillation (ENSO) were also discussed. © 2019 Elsevier Ltd
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被引频次[WOS]:2   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/121940
Appears in Collections:气候变化事实与影响

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Affiliation: Ocean College, Zhejiang University, 1 Zheda Road, Zhoushan, Zhejiang 316021, China; Laboratory of Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, MNR, Hangzhou, 310012, China; Institute de Biologie de I'Ecole Normale Superieure UMR 8197, Eco-Evolutionary Mathematics, Ecole Normal Superieure, Paris, France; International Center for Mathematical and Computational Modeling of Complex Systems (UMMISCO), UMI 209 IRD-UPMC, Bondy, France; Shanghai Key Laboratory of Multidimensional Information Processing, East China Normal University, No. 500, Dong-Chuan Road, Shanghai, 200241, China

Recommended Citation:
Xiao X.,He J.,Yu Y.,et al. Teleconnection between phytoplankton dynamics in north temperate lakes and global climatic oscillation by time-frequency analysis[J]. Water Research,2019-01-01,154
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