Temporal Effects of Groundwater on Physical and Biotic Components of a Karst Stream

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	Temporal Effects of Groundwater on Physical and Biotic Components of a Karst Stream
	Tang, Tao ; Guo, Shuhan ; Tan, Lu ; Li, Tao ; Burrows, Ryan M.; Cai, Qinghua
刊名	WATER
	2019-06
卷号	11 期号:6 页码:-
关键词	groundwater-surface water interactions time series water temperature regime flow regime chlorophyll a wavelet analysis convergent cross-mapping
ISSN号	2073-4441
英文摘要	Although most lotic ecosystems are groundwater dependent, our knowledge on the relatively long-term ecological effects of groundwater discharge on downstream reaches remains limited. We surveyed four connected reaches of a Chinese karst stream network for 72 consecutive months, with one reach, named Hong Shi Zi (HSZ), evidently affected by groundwater. We tested whether, compared with other reaches, HSZ had (1) milder water temperature and flow regimes, and (2) weaker influences of water temperature and flow on benthic algal biomass represented by chlorophyll a (Chl. a) concentrations. We found that the maximum monthly mean water temperature in HSZ was 0.6 degrees C lower than of the adjacent upstream reach, and the minimum monthly mean water temperature was 1.0 degrees C higher than of the adjacent downstream reach. HSZ had the smallest coefficient of variation (CV) for water temperature but the largest CV for discharge. Water temperature and discharge displayed a significant 12-month periodicity in all reaches not directly groundwater influenced. Only water temperature displayed such periodicity in HSZ. Water temperature was an important predictor of temporal variation in Chl. a in all reaches, but its influence was weakest in HSZ. Our findings demonstrate that longer survey data can provide insight into groundwater-surface water interactions.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/42811]
专题	生态环境研究中心_城市与区域生态国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China 3.Chinese Acad Sci, State Key Lab Urban & Reg Ecol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 4.Griffith Univ, Australian Rivers Inst, Brisbane, Qld 4111, Australia
推荐引用方式 GB/T 7714	Tang, Tao,Guo, Shuhan,Tan, Lu,et al. Temporal Effects of Groundwater on Physical and Biotic Components of a Karst Stream[J]. WATER,2019,11(6):-.
APA	Tang, Tao,Guo, Shuhan,Tan, Lu,Li, Tao,Burrows, Ryan M.,&Cai, Qinghua.(2019).Temporal Effects of Groundwater on Physical and Biotic Components of a Karst Stream.WATER,11(6),-.
MLA	Tang, Tao,et al."Temporal Effects of Groundwater on Physical and Biotic Components of a Karst Stream".WATER 11.6(2019):-.