Arid
DOI10.1007/s10750-009-9823-8
The response of perennial and temporary headwater stream invertebrate communities to hydrological extremes
Stubbington, Rachel1; Greenwood, Adam M.1; Wood, Paul J.1; Armitage, Patrick D.2; Gunn, John3; Robertson, Anne L.4
通讯作者Stubbington, Rachel
来源期刊HYDROBIOLOGIA
ISSN0018-8158
出版年2009
卷号630期号:1页码:299-312
英文摘要

The headwaters of karst rivers experience considerable hydrological variability, including spates and streambed drying. Extreme summer flooding on the River Lathkill (Derbyshire, UK) provided the opportunity to examine the invertebrate community response to unseasonal spate flows, flow recession and, at temporary sites, streambed drying. Invertebrates were sampled at sites with differing flow permanence regimes during and after the spates. Following streambed drying at temporary sites, dewatered surface sediments were investigated as a refugium for aquatic invertebrates. Experimental rehydration of these dewatered sediments was conducted to promote development of desiccation-tolerant life stages. At perennial sites, spate flows reduced invertebrate abundance and diversity, whilst at temporary sites, flow reactivation facilitated rapid colonisation of the surface channel by a limited number of invertebrate taxa. Following streambed drying, 38 taxa were recorded from the dewatered and rehydrated sediments, with Oligochaeta being the most abundant taxon and Chironomidae (Diptera) the most diverse. Experimental rehydration of dewatered sediments revealed the presence of additional taxa, including Stenophylax sp. (Trichoptera: Limnephilidae) and Nemoura sp. (Plecoptera: Nemouridae). The influence of flow permanence on invertebrate community composition was apparent despite the aseasonal high-magnitude flood events. Flow permanence was also critical in determining the community response to the spate flows. Following streambed drying at temporary sites, the surficial sediments overlying the karstic bedrock functioned as an effective refugium for several taxa. The development of aquatic insects following experimental rehydration indicated that these taxa survived in dewatered sediments as desiccation-resistant eggs.


英文关键词Flow permanence Spate Streambed drying Disturbance Refugia Sediment rehydration
类型Article
语种英语
国家England
收录类别SCI-E
WOS记录号WOS:000267030500023
WOS关键词LIFE-HISTORY TACTICS ; SMALL CHALK STREAM ; FLOW PERMANENCE ; MACROINVERTEBRATE ASSEMBLAGES ; DESERT STREAM ; HABITAT STRUCTURE ; EAST WESTPHALIA ; SPRING SYSTEMS ; DROUGHT ; ENGLAND
WOS类目Marine & Freshwater Biology
WOS研究方向Marine & Freshwater Biology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/160907
作者单位1.Univ Loughborough, Dept Geog, Loughborough LE11 3TU, Leics, England;
2.Freshwater Biol Assoc, Ctr Ecol & Hydrol, Wareham BH20 6BB, Dorset, England;
3.Univ Birmingham, Limestone Res Grp, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, England;
4.Roehampton Univ, Sch Human & Life Sci, Ctr Res Ecol & Environm, London SW15 4JD, England
推荐引用方式
GB/T 7714
Stubbington, Rachel,Greenwood, Adam M.,Wood, Paul J.,et al. The response of perennial and temporary headwater stream invertebrate communities to hydrological extremes[J],2009,630(1):299-312.
APA Stubbington, Rachel,Greenwood, Adam M.,Wood, Paul J.,Armitage, Patrick D.,Gunn, John,&Robertson, Anne L..(2009).The response of perennial and temporary headwater stream invertebrate communities to hydrological extremes.HYDROBIOLOGIA,630(1),299-312.
MLA Stubbington, Rachel,et al."The response of perennial and temporary headwater stream invertebrate communities to hydrological extremes".HYDROBIOLOGIA 630.1(2009):299-312.
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