Spatial variability in the hyporheic zone refugium of temporary streams

STUBBINGTON, R., WOOD, P.J. and REID, I., 2011. Spatial variability in the hyporheic zone refugium of temporary streams. Aquatic Sciences - Research Across Boundaries, 73 (4), pp. 499-511.

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Abstract

A key ecological role hypothesized for the hyporheic zone is as a refugium that promotes survival of benthic invertebrates during adverse conditions in the surface stream. Many studies have investigated use of the hyporheic refugium during hydrological extremes (spates and streambed drying), and recent research has linked an increase in the abundance of benthic invertebrates within hyporheic sediments to increasing biotic interactions during flow recession in a temporary stream. This study examined spatial variability in the refugial capacity of the hyporheic zone in two groundwater-dominated streams which flow permanence varied over small areas. Two non- insect taxa, Gammarus pulex and Polycelis spp. Were common to both streams and were investigated in detail. Hydrological conditions in both streams comprised a four- month period of flow recession and low flows, accompanied by reductions in water depth and wetted width. Consequent declines in submerged benthic habitat availability were associated with increases in population densities of mobile benthic taxa, in particular G. pulex.

Item Type: Journal article
Description: The original publication is available at www.springerlink.com
Publication Title: Aquatic Sciences - Research Across Boundaries
Creators: Stubbington, R., Wood, P.J. and Reid, I.
Publisher: Springer
Date: 2011
Volume: 73
Number: 4
Identifiers:
NumberType
http://www.springerlink.comOther
Divisions: Schools > School of Science and Technology
Depositing User: EPrints Services
Date Added: 09 Oct 2015 10:05
Last Modified: 23 Aug 2016 09:08
URI: http://irep.ntu.ac.uk/id/eprint/7493

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