D Stephen
University of Liverpool
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Publication
Featured researches published by D Stephen.
Hydrobiologia | 1997
Brian Moss; Meryem Beklioglu; Laurence Carvalho; Sabri Kilinc; Suzanne McGowan; D Stephen
Previous work on a set of small lakes, of varying depth, the meres of North West England, has shown that nitrogen availability controls the summer phytoplankton populations in the deeper ones (max depth > 3 m) and zooplankton grazing in shallow ones. The meres have generally high total phosphorus concentrations and this may be a natural phenomenon dependent on the local geochemistry. Some anthropogenic eutrophication has occurred, however, and from a chain of three meres, sewage effluent was diverted in 1991. The upper lake, Mere Mere, lying above the point of discharge, has not changed in any systematic way since effluent diversion. The middle lake, the very shallow Little Mere, has changed markedly in water chemistry but not fundamentally in ecosystem structure. It was and remains a clear-water, macrophyte dominated lake. The third lake, the deep Rostherne Mere, has shown no response in chlorophyll aconcentrations in four years since effluent diversion though in the past two years there appears to be a downward trend in total phosphorus. The reasons for this are explored in terms of our understanding of lake eutrophication. Comparisons are made with White Mere, a deep groundwater fed lake with a long retention time and a very high total phosphorus concentration. The deep meres may add a new dimension to our understanding of natural and anthropogenic eutrophication.
Aquatic Conservation-marine and Freshwater Ecosystems | 2003
Brian Moss; D Stephen; C Alvarez; Eloy Bécares; W.J. van de Bund; Se Collings; E. Van Donk; E de Eyto; Tõnu Feldmann; Camino Fernández-Aláez; Margarita Fernández-Aláez; Rjm Franken; Francisco García-Criado; Elisabeth M. Gross; Mikael Gyllström; Lars-Anders Hansson; Kenneth Irvine; A Järvalt; Jens Peder Jensen; Erik Jeppesen; Timo Kairesalo; Ryszard Kornijów; T Krause; H Kunnap; Alo Laas; E Lille; B Lorens; H Luup; Miracle; Peeter Nõges
Freshwater Biology | 2004
D Stephen; David Balayla; Eloy Bécares; S. E. Collings; Camino Fernández-Aláez; Margarita Fernández-Aláez; Carmen Ferriol; P Garcia; Joan Gomà; Mikael Gyllström; Lars-Anders Hansson; Jaana Hietala; Timo Kairesalo; Maria Rosa Miracle; Susana Romo; Juan Rueda; Annika Ståhl-Delbanco; Marie Svensson; Kirsi Vakkilainen; M Valentin; W.J. van de Bund; E. Van Donk; Eduardo Vicente; María‐José Villena; Brian Moss
Limnology and Oceanography | 2005
Mikael Gyllström; Lars-Anders Hansson; Erik Jeppesen; F. García Criado; Elisabeth M. Gross; Kenneth Irvine; Timo Kairesalo; Ryszard Kornijów; Maria Rosa Miracle; Mirva Nykänen; Tiina Nõges; Susana Romo; D Stephen; E. Van Donk; Brian Moss
Freshwater Biology | 2005
Brian Moss; Tom Barker; D Stephen; Adrian E. Williams; David J. Balayla; Meryem Beklioglu; Laurence Carvalho
Freshwater Biology | 2004
Kirsi Vakkilainen; Timo Kairesalo; Jaana Hietala; David Balayla; Eloy Bécares; Wouter J. Van de Bund; Ellen Van Donk; Margarita Fernández-Aláez; Mikael Gyllström; Lars-Anders Hansson; Maria Rosa Miracle; Brian Moss; Susana Romo; Juan Rueda; D Stephen
Hydrobiologia | 2003
Peeter Nõges; Tiina Nõges; Lea Tuvikene; H Smal; S Ligeza; Ryszard Kornijów; Wojciech Pęczuła; Eloy Bécares; Francisco García-Criado; C Alvarez-Carrera; Camino Fernández-Aláez; Carmen Ferriol; Rosa Miracle; Eduardo Vicente; Susana Romo; E. Van Donk; W.J. van de Bund; Jens Peder Jensen; Elisabeth M. Gross; Lars-Anders Hansson; Mikael Gyllström; Mirva Nykänen; E de Eyto; Kenneth Irvine; D Stephen; S Collins; Brian Moss
Freshwater Biology | 2004
W.J. van de Bund; Susana Romo; María‐José Villena; M. Valentín; E. Van Donk; Eduardo Vicente; Kirsi Vakkilainen; Marie Svensson; D Stephen; Annika Ståhl-Delbanco; Juan Rueda; Brian Moss; Maria Rosa Miracle; Timo Kairesalo; Lars-Anders Hansson; Jaana Hietala; Mikael Gyllström; Joan Gomà; P Garcia; Margarita Fernández-Aláez; Camino Fernández-Aláez; Carmen Ferriol; S. E. Collings; Eloy Bécares; David Balayla; T. Alfonso
Freshwater Biology | 2004
D Stephen; David Balayla; S. E. Collings; Brian Moss
Oikos | 2007
Lars-Anders Hansson; Eloy Bécares; Margarita Fernández-Aláez; Camino Fernández-Aláez; Timo Kairesalo; Maria Rosa Miracle; Susana Romo; D Stephen; Kirsi Vakkilainen; Wouter Van De Bund; Ellen Van Donk; David Balayla; Brian Moss