Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1127/1863-9135/2010/0176-0377 |
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
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ISSN | 1863-9135 |
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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