globalchange  > 全球变化的国际研究计划
DOI: 10.1127/fal/2019/1149
WOS记录号: WOS:000483100900002
论文题名:
Visualising and quantifying the variability hydrological of state in intermittent rivers
作者: Sefton, Catherine E. M.1; Parry, Simon1; England, Judy2; Angell, Geoffrey2
通讯作者: Sefton, Catherine E. M.
刊名: FUNDAMENTAL AND APPLIED LIMNOLOGY
ISSN: 1863-9135
出版年: 2019
卷: 193, 期:1, 页码:21-38
语种: 英语
英文关键词: ephemeral streams ; temporary streams ; ponding ; pools ; aquatic state ; network contraction
WOS关键词: TEMPORARY RIVER ; FLOW INTERMITTENCY ; LANDSCAPE METRICS ; LOWLAND STREAMS ; CLIMATE-CHANGE ; REGIME ; DURATION ; PATTERNS ; HABITAT ; SYSTEM
WOS学科分类: Limnology ; Marine & Freshwater Biology
WOS研究方向: Marine & Freshwater Biology
英文摘要:

The hydrology of intermittent rivers has been characterised using either flow regimes, with limited spatial resolution, or network contraction, with limited temporal resolution. Exploration of the dynamic behaviour of these rivers, on which highly diverse biological communities depend, requires longitudinal, year-round observations with a more detailed classification of hydrological state than can be provided by gauging stations or wet/dry mapping alone. Observations of dry, ponded, moderate lbw and high flow hydrological states spanning 20 years with approximately monthly frequency along ten chalk rivers in the south-east of England were visualised. There was slower transitioning between hydrological states and less spatial fragmentation on rivers with groundwater-dominated regimes than on those more influenced by superficial deposits. Seasonal patterns in both the composition and configuration of states were demonstrated using adapted landscape metrics. Responses to hydrological extremes and anthropogenic influences included drying downstream of the source and an artificially near-perennial reach. A framework is proposed for the categorisation of metrics of hydrological state and demonstrates that the classification and dimensional limitations of traditional approaches cannot fully characterise the hydrological behaviour of intermittent rivers. Such characterisation is an important step towards the tailored assessments required for effective management of these dynamic systems.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/146330
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作者单位: 1.Ctr Ecol & Hydrol, Maclean Bldg,Benson Lane, Wallingford OX10 8BB, Oxon, England
2.Environm Agcy, Bessemer Rd, Welwyn Garden City AL7 1HE, Herts, England

Recommended Citation:
Sefton, Catherine E. M.,Parry, Simon,England, Judy,et al. Visualising and quantifying the variability hydrological of state in intermittent rivers[J]. FUNDAMENTAL AND APPLIED LIMNOLOGY,2019-01-01,193(1):21-38
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