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题名: Climate-driven synchrony in growth-increment chronologies of fish from the world's largest high-elevation river
作者: Tao, Juan1, 2; Kennard, Mark J.2; Jia, Yintao1; Chen, Yifeng1, 3
关键词: Climate change ; Dendrochronology ; Fish otolith ; Trophic niche ; Yarlung Tsangpo River
刊名: SCIENCE OF THE TOTAL ENVIRONMENT
发表日期: 2018-12-15
DOI: 10.1016/j.scitotenv.2018.07.108
卷: 645, 页:339-346
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: Understanding how sensitive aquatic ecosystems respond to climate change is essential for effective biodiversity conservation and management. The Tibetan Plateau (TP) is one of the most globally sensitive areas to climate change with potentially serious implications for resident fish populations and aquatic food webs. However, how the growth of TP fish responds to climate change, and how this response varies with the trophic level of different species remain unknown. We established growth-increment chronologies of two important Schizothoracinae fishes that are endemic to the TP (e.g., the omnivorous Schizopygopsis younghusbandi and the carnivorous Oxygymnocypris stewartii) from the Yarlung Tsangpo River, using otolith increment width measurements and dendrochronological methods. These growth chronologies were correlated with key indicators of environmental variation (temperature, precipitation, and river discharge) to examine the potential effects of climate change. The two chronologies displayed synchronous responses to recent climate change. In this glacial-fed river, the growth of both fish species was significantly and negatively correlated with the mean annual air temperature, while it was positively but not significantly correlated with precipitation and discharge. The higher trophic level species O. stewartii was more sensitive to climate than was the lower trophic level species S. younghusbandi, with temperature variables explaining a higher proportion of growth variability in O. stewartii (64.6%) than in S. younghusbandi (46.4%). The results collectively indicate that both species are highly sensitive to climate change, which may affect fish growth by altering water environment, fish physiological fitness and food availability. This study provides further empirical evidence of the utility of growth-increment chronologies for investigating the effects of climate change on aquatic ecosystems across different basins and water body types of the TP. These findings can inform conservation and management actions related to addressing climate change on the TP and other high-elevation temperate systems found worldwide. (C) 2018 Elsevier B.V. All rights reserved.
关键词[WOS]: YARLUNG TSANGPO RIVER ; OXYGYMNOCYPRIS-STEWARTII CYPRINIFORMES ; TIBETAN PLATEAU ; TROPHIC LEVELS ; ZANGBO RIVER ; BIOCHRONOLOGICAL APPROACH ; NORTHEAST PACIFIC ; LHASA RIVER ; FRESH-WATER ; LAND-USE
语种: 英语
项目资助者: Strategic Priority Research Program of the Chinese Academy of Sciences(XDA20050204 ; National Natural Science Foundation of China(31372189 ; National Basic Research Program of China(2014FY210700) ; Knowledge Innovation Project of the Chinese Academy of Sciences(KSCX2-YW-Z-1023) ; Chinese Academy of Sciences Stipend Scholarship ; Griffith University International Postgraduate Research Scholarship ; XDB31000000) ; 41030208)
WOS记录号: WOS:000445164200032
ISSN号: 0048-9697
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/56148
Appears in Collections:水生生物多样性与资源保护研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
2.Griffith Univ, Australian Rivers Inst, Brisbane, Qld 4111, Australia
3.Chinese Acad Sci, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Hubei, Peoples R China
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