Toggle Main Menu Toggle Search

Open Access padlockePrints

Fish populations as indicators of long-term changes in UK estuaries

Lookup NU author(s): Dr Margaret Gill, Professor Christopher Frid


Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Trawling programmes in the Tyne estuary in North-east England have been conducted since 1982 by the Environment Agency, its predecessors and since 1990 by the Dove Marine Laboratory. Survey data have been combined and analysed to examine whether variations in the fish community can provide bio-indicators for changes in water quality following the installation of primary treatment works at Howdon. Changes in fish abundance and diversity after 1988 suggest a general decline in water quality in the lower estuary, which may be attributable to increases in the discharge from the treatment works. In contrast in the upper estuary changes in fish populations are commensurate with an improvement in water quality when outfalls were diverted to Howdon. Periods of change correspond with times of extension to the sewerage system. The Tyne fish community and the flounder population appear to provide reliable indicators of alterations in water quality.

Publication metadata

Author(s): Gill ME, Frid CLJ, Harwood K, Peaty S

Publication type: Article

Publication status: Published

Journal: Senckenbergiana Maritima

Year: 2001

Volume: 31

Issue: 2

Pages: 169-175

ISSN (print): 0080-889X

ISSN (electronic):

Publisher: Springer


DOI: 10.1007/BF03043026


Altmetrics provided by Altmetric