Search Results - "George, D G"

Top-down versus bottom-up control in planktonic systems: some case studies from the English Lake District by George, D. G.

“…In this review, I use examples drawn from long-term studies in the English Lakes to highlight the limitations of top-down control in planktonic systems. These…”
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The effect of nutrient enrichment and changes in the weather on the abundance of Daphnia in Esthwaite Water, Cumbria by GEORGE, D. G.

“…Summary 1. A simple counting technique has been used to produce a long‐term (1956–1991) record of the seasonal variations in the abundance of Daphnia in…”
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Impact of the North Atlantic Oscillation on the development of ice on Lake Windermere by George, D. G

“…Windermere, the largest lake in England, seldom freezes over but the sheltered bays are usually covered with ice for several days every year. Here I analyse…”
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The influence of the North Atlantic Oscillation on the physical, chemical and biological characteristics of four lakes in the English Lake District by George, D. G., Maberly, S. C., Hewitt, D. P.

“…Summary 1. Thirty‐six years of winter meteorological and limnological measurements from four lakes in the English Lake District are analysed and related to…”
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Factors influencing the spatial distribution of zooplankton and fish in Loch Ness, UK by George, D. G., Winfield, I. J.

“…Summary 1 The vertical and horizontal distribution of phytoplankton, zooplankton and fish in Loch Ness, Scotland, were monitored during one day‐time and one…”
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The impact of regional-scale changes in the weather on the long-term dynamics of Eudiaptomus and Daphnia in Esthwaite Water, Cumbria by George, D. G.

“…1. Year‐to‐year changes in the weather have a profound effect on the seasonal dynamics of zooplankton in lakes. Here, I analyse some zooplankton data from…”
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Using a 1-D mixing model to simulate the vertical flux of heat and oxygen in a lake subject to episodic mixing by Bell, V.A., George, D.G., Moore, R.J., Parker, J.

“…A one-dimensional, two-layer lake model is used to simulate the daily temperature and oxygen profile of an English Lake in response to changes in wind, air…”
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UK lake plankton and the Gulf Stream by George, D. G, Taylor, A. H

“…Recent studies suggest that plankton succession in temperate lakes is strongly influenced by year-to-year variations in the weather. Here we show that the…”
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Factors influencing the temporal coherence of five lakes in the English Lake District by George, D. G., Talling, J. F., Rigg, E.

“…1. The lakes in the Windermere catchment are all deep, glacial lakes but they differ in size, shape and general productivity. Here, we examine the extent to…”
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Biotic and abiotic influences on the recruitment of male perch in Windermere, U.K by Paxton, C. G. M., Winfield, I. J., Fletcher, J. M., George, D. G., Hewitt, D. P.

“…Perch Perca fluviatilis recruitment (based on the catch per unit effort, CPUE, of 2 or 3 year male perch) varied greatly from 1941 to 1995 in Windermere, U.K.,…”
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Using a 1-D mixing model to assess the potential impact of year-to-year changes in weather on the habitat of vendace (Coregonus albula) in Bassenthwaite Lake, Cumbria by GEORGE, D. G., BELL, V. A., PARKER, J., MOORE, R. J.

“…Summary 1. Bassenthwaite Lake in Cumbria is one of only two English lakes containing a population of vendace (Coregonus albula). The spatial distribution and…”
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Remote sensing evidence for the episodic transport of phosphorus from the littoral zone of a thermally stratified lake by George, D. G.

“…Summary 1 Esthwaite Water in Cumbria is a small, thermally stratified lake fringed with beds of reed in the shallow littoral. In this study, we used a…”
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impact of year-to-year changes in the weather on the dynamics of Daphnia in a thermally stratified lake by George, D. G, Hewitt, D. P

“…The factors influencing the seasonal dynamics of Daphnia in a thermally stratified lake (Esthwaite Water) are described and related to long-term changes in the…”
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The airborne remote sensing of phytoplankton chlorophyll in the lakes and tarns of the English Lake District by George, D. G.

“…The results of two Daedalus Airborne Thematic Mapper surveys of phytoplankton chlorophyll in six large lakes and ten small tarns are described. The water…”
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Controlled reversal of lake acidification by treatment with phosphate fertilizer by Davison, W, George, D. G, Edwards, N. J. A

“…LAKES that have become acidified by airborne pollutants typically have low biological productivity and support an impoverished flora and fauna1 . In their…”
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Molecular genetic analysis of Daphnia in the English Lake District: species identity, hybridisation and resting egg banks by Reid, V. A., Carvalho, G. R., George, D. G.

“…Summary 1 Taxonomic issues in many Daphnia species complexes are often confused by a high degree of phenotypic plasticity and by interspecific hybridisation…”
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Using a compact airborne spectrographic imager to monitor phytoplankton biomass in a series of lakes in north Wales by George, D.G., Malthus, T.J.

“…Three lakes in Snowdonia and two on the island of Anglesey were surveyed using a Compact Airborne Spectrographic Imager ( casi). Water samples for chlorophyll…”
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Airborne remote sensing of macrophytes in Cefni Reservoir, Anglesey, UK by Malthus, T.J., George, D.G.

“…This paper evaluates the use of Daedalus Airborne Thematic Mapper (ATM) remotely sensed imagery for monitoring the distribution of aquatic macrophyte species…”
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Investigation of first year biotic and abiotic influences on the recruitment of pike Esox lucius over 48 years in Windermere, U.K by Paxton, C. G. M., Winfield, I. J., Fletcher, J. M., George, D. G., Hewitt, D. P.

“…Estimated pike Esox lucius recruitment varied by a factor of 16 for females from 1944 to 1991 and by a factor of 27 for males from 1943 to 1990 in Windermere,…”
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protein identification resource (PIR) by George, D.G, Barker, W.C, Hunt, L.T

“…The Protein Identification Resource, which provides the scientific community with an efficient on-line computer system designed for the identification and…”
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