Arid
DOI10.1127/1863-9135/2010/0176-0377
Is the hyporheic zone a refugium for aquatic macroinvertebrates during severe low flow conditions?
Wood, P. J.1; Boulton, A. J.2; Little, S.1; Stubbington, R.1
通讯作者Wood, P. J.
来源期刊FUNDAMENTAL AND APPLIED LIMNOLOGY
ISSN1863-9135
出版年2010
卷号176期号:4页码:377-390
英文摘要

The potential role of the hyporheic zone as a refugium for stream invertebrates during hydrological perturbations was acknowledged more than five decades ago. However, field evidence to support the hyporheic refuge hypothesis during periods of flow recession and severe low flow remains equivocal. Some studies report fauna using the hyporheic zone during periods of flow cessation whilst others have recorded little or no refuge use due to limited habitat availability or harsh abiotic conditions. We assessed aquatic macroinvertebrate community changes associated with severe low flow conditions during a severe supra-seasonal drought on the Little Stour River (UK). Paired benthic and hyporheic samples were collected from four sites (two perennial, two intermittent) on the upper reaches of the river. The number of benthic taxa and the proportion of benthos (particularly the amphipod Gammarus pulex) within the hyporheic zone relative to those in the benthic samples increased significantly during the latter stages of the drought at all sites. These changes coincided with elevated benthic and hyporheic water temperatures rather than a reduction in river discharge alone. The abundance of obligate hypogean macroinvertebrates also increased during the latter stages of the event, suggesting that hypogean taxa may also utilise the shallow hyporheic zone during adverse environmental conditions. Our results, based on paired surface-hyporheic field samples at multiple sites, support the hyporheic refuge hypothesis within a temperate groundwater-dominated stream during severe drought. The results also clearly demonstrate the importance of considering surface-subsurface linkages when assessing responses to disturbance in streams.


英文关键词benthos hyporheos drought supra-seasonal event disturbance surface-groundwater interactions hyporheic refuge hypothesis
类型Article
语种英语
国家England ; Australia
收录类别SCI-E
WOS记录号WOS:000281759300008
WOS关键词GROUNDWATER-DOMINATED STREAM ; SUPRA-SEASONAL DROUGHT ; VERTICAL-DISTRIBUTION ; INVERTEBRATE ASSEMBLAGES ; HEADWATER STREAMS ; LOTIC DISTURBANCE ; DESERT STREAM ; CHALK STREAM ; RIVER ; COMMUNITY
WOS类目Limnology ; 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/2XILL650/164229
作者单位1.Univ Loughborough, Dept Geog, Loughborough LE11 3TU, Leics, England;
2.Univ New England, Armidale, NSW 2350, Australia
推荐引用方式
GB/T 7714
Wood, P. J.,Boulton, A. J.,Little, S.,et al. Is the hyporheic zone a refugium for aquatic macroinvertebrates during severe low flow conditions?[J],2010,176(4):377-390.
APA Wood, P. J.,Boulton, A. J.,Little, S.,&Stubbington, R..(2010).Is the hyporheic zone a refugium for aquatic macroinvertebrates during severe low flow conditions?.FUNDAMENTAL AND APPLIED LIMNOLOGY,176(4),377-390.
MLA Wood, P. J.,et al."Is the hyporheic zone a refugium for aquatic macroinvertebrates during severe low flow conditions?".FUNDAMENTAL AND APPLIED LIMNOLOGY 176.4(2010):377-390.
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