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Title: Linking hydrology and ecology : River Wissey : Annex B aquatic macrophytes of the River Wissey
Author: National Rivers Authority Anglian Region
Document Type: Monograph
Annotation: EA additional title info: Loughborough University of technology - dept of geography - freshwater environments research group - linking hydrology an ecology - April 1993
This document is one of a series of Annexes which accompany the report The River Wissey: the link between hydrology and ecology' prepared for the National Rivers Authority by the Freshwater Environments Group at Loughborough University. This paper describes a study of the growth and recession of aquatic macrophytes in the River Wissey. It relates the changes in macrophyte abundance to flow and sediment characteristics and discusses the implications of instream hydraulic parameters for invertebrate and fish faunas. The River Wissey supports a typical chalk stream flora. Aquatic macrophytes at three sites on the main river showed marked seasonal changes in abundance during 1992. These changes were accompanied by alterations in the composition of bed sediments arising from differences in flow velocity patterns, and variations in water depth. The role of aquatic macrophytes in providing habitat diversity is fundamental to faunal distribution in rivers and may be of particular importance in optimizing low flow conditions for faunal communities.
Publisher: National Rivers Authority
Publication Date: 1993
Publication Place: Loughborough
Subject Keywords: RiversEcologyHydrologyMacrophytesHabitat preferencesSedimentsGrowthChalk streamsWater levels
Geographic Keywords: EA AnglianNorfolkWisseyCam and Ely Ouse catchment
Extent: 47
Total file downloads: 280

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