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  • Relationships between climate and growth of gymnocypris selincuoensis in the tibetan plateau

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    Author(s)
    Tao, Juan
    Chen, Yifeng
    He, Dekui
    Ding, Chengzhi
    Griffith University Author(s)
    Tao, Juan
    Year published
    2015
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    Abstract
    The consequences of climate change are becoming increasingly evident in the Tibetan Plateau, represented by glaciers retreating and lakes expanding, but the biological response to climate change by plateau–lake ecosystems is poorly known. In this study, we applied dendrochronology methods to develop a growth index chronology with otolith increment widths of Selincuo naked carp (Gymnocypris selincuoensis), which is an endemic species in Lake Selincuo (4530 m), and investigated the relationships between fish growth and climate variables (regional and global) in the last three decades. A correlation analysis and principle ...
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    The consequences of climate change are becoming increasingly evident in the Tibetan Plateau, represented by glaciers retreating and lakes expanding, but the biological response to climate change by plateau–lake ecosystems is poorly known. In this study, we applied dendrochronology methods to develop a growth index chronology with otolith increment widths of Selincuo naked carp (Gymnocypris selincuoensis), which is an endemic species in Lake Selincuo (4530 m), and investigated the relationships between fish growth and climate variables (regional and global) in the last three decades. A correlation analysis and principle component regression analysis between regional climate factors and the growth index chronology indicated that the growth of G. selincuoensis was significantly and positively correlated with length of the growing season and temperature-related variables, particularly during the growing season. Most of global climate variables, which are relevant to the Asian monsoon and the midlatitude westerlies, such as El Nino Southern Oscillation Index, the Arctic Oscillation, North Atlantic Oscillation, and North America Pattern, showed negative but not significant correlations with the annual growth of Selincuo naked carp. This may have resulted from the high elevation of the Tibetan Plateau and the high mountains surrounding this area. In comparison, the Pacific Decade Oscillation (PDO) negatively affected the growth of G. selincuoensis. The reason maybe that enhancement of the PDO can lead to cold conditions in this area. Taken together, the results indicate that the Tibetan Plateau fish has been affected by global climate change, particularly during the growing season, and global climate change likely has important effects on productivity of aquatic ecosystems in this area.
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    Journal Title
    Ecology and Evolution
    Volume
    5
    Issue
    8
    DOI
    https://doi.org/10.1002/ece3.1463
    Copyright Statement
    © 2015 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.This is an open access article under the term s of the Creative Commons Attribution License, which permits use,distribution and reproduction in any medium, provided the original work is properly cited.
    Subject
    Ecology
    Ecology not elsewhere classified
    Evolutionary biology
    Publication URI
    http://hdl.handle.net/10072/124978
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    • Journal articles

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