Search Results - "Riley, W. D."

Seasonal downstream movements of juvenile Atlantic salmon, Salmo salar L., with evidence of solitary migration of smolts by Riley, W.D.

“…It is a commonly held belief that salmon smolts migrate together in ‘shoals’. However, it is not clear at what point in their migration that shoals are formed…”
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Street lighting delays and disrupts the dispersal of Atlantic salmon (Salmo salar) fry by Riley, W.D., Davison, P.I., Maxwell, D.L., Bendall, B.

“…► Fry dispersal under control conditions was compared with that under street lighting. ► Under street lighting dispersal occurred significantly later and the…”
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Physiological seawater adaptation in juvenile Atlantic salmon (Salmo salar) autumn migrants by RILEY, W.D, IBBOTSON, A.T, LOWER, N, COOK, A.C, MOORE, A, MIZUNO, S, PINDER, A.C, BEAUMONT, W.R.C, PRIVITERA, L

“…1. About 25 % of juvenile Atlantic salmon (Salmo salar) migrating downstream in the River Frome in southern England do so in the autumn rather than in the…”
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Do triploid Salmo trutta stocked into a chalk stream in the spring prey on wild Salmo salar smolts? by Riley, W. D., Davison, P. I., Ives, M. J., Maxwell, D. L.

“…The predation impact of recently stocked triploid brown trout, Salmo trutta L., on migrating wild Atlantic salmon, Salmo salar L., smolts was investigated in…”
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Evidence for an autumn downstream migration and the subsequent estuarine residence of 0+ year juvenile Atlantic salmon Salmo salar L., in England by Pinder, A. C., Riley, W. D., Ibbotson, A. T., Beaumont, W. R. C.

“…The use of passive integrated transponder technology facilitated the first observations of the autumn migration of 0+ year Atlantic salmon Salmo salar parr…”
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Some observations on the impact of temperature and low flow on the onset of downstream movement of wild Atlantic salmon, Salmo salar L., smolts by Riley, W.D., Maxwell, D.L., Ives, M.J., Bendall, B.

“…A variety of proximate environmental triggers including water temperature and river flow have been correlated with the intensity and timing of salmon smolt…”
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Adult returns from Atlantic salmon, Salmo salar, parr autumn migrants by RILEY, W.D, IBBOTSON, A.T, BEAUMONT, W.R.C

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A laboratory experiment to determine the dispersal response of Atlantic salmon (Salmo salar) fry to street light intensity by Riley, W. D., Davison, P. I., Maxwell, D. L., Newman, R. C., Ives, M. J.

“…Summary The effect of a range of ecologically relevant broader spectrum street light intensities on the dispersal timing of Atlantic salmon (Salmo salar) fry…”
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The onset of downstream movement of juvenile Atlantic salmon, Salmo salar L., in a chalk stream by RILEY, W. D., EAGLE, M. O., IVES, S. J.

“…The downstream movements of wild Atlantic salmon, Salmo salar L., from their established feeding territories in the River Itchen, Hampshire, UK, were logged…”
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Magnetic particles associated with the lateral line of the European eel Anguilla anguilla by Moore, A., Riley, W. D.

“…Magnetization measurements of the European eel Anguilla anguilla demonstrated the presence of magnetic material concentrated in the region of the mandibular…”
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Development of schooling behaviour during the downstream migration of Atlantic salmon Salmo salar smolts in a chalk stream by Riley, W. D., Ibbotson, A. T., Maxwell, D. L., Davison, P. I., Beaumont, W. R. C., Ives, M. J.

“…The downstream migratory behaviour of wild Atlantic salmon Salmo salar smolts was monitored using passive integrated transponder (PIT) antennae systems over 10…”
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effects of low summer flow on wild salmon (Salmo salar), trout (Salmo trutta) and grayling (Thymallus thymallus) in a small stream by RILEY, W.D, MAXWELL, D.L, PAWSON, M.G, IVES, M.J

“…1. The effects of an experimentally imposed low summer flow on habitat use, displacement and survival of wild populations of juvenile salmon (Salmo salar),…”
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Predation by Pacifastacus leniusculus on the intra-gravel embryos and emerging fry of Salmo salar by EDMONDS, N. J., RILEY, W. D., MAXWELL, D. L.

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The role of density and relatedness in wild juvenile Atlantic salmon growth by Fernandes, W. P. A., Griffiths, S. W., Ibbotson, A. T., Bruford, M. W., Riley, W. D.

“…Growth is a key life‐history trait in fish that is influenced by both abiotic (such as temperature and water chemistry) and biotic factors (such as density and…”
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Relatedness and body size influence territorial behaviour in Salmo salar juveniles in the wild by Fernandes, W. P. A., Griffiths, S. W., Ibbotson, A. T., Riley, W. D.

“…Wild Atlantic salmon, Salmo salar L., juveniles defend territories to enable exclusive access to food resources, and kin selection benefits may be accrued…”
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Street lighting disrupts the diel migratory pattern of wild Atlantic salmon, Salmo salar L., smolts leaving their natal stream by Riley, W.D., Bendall, B., Ives, M.J., Edmonds, N.J., Maxwell, D.L.

“…The migratory timing and behaviour of wild Atlantic salmon smolts leaving their natal stream was determined using a passive integrated transponder (PIT)…”
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Habitat use by Thymallus thymallus in a chalk stream and implications for habitat management by RILEY, W.D, PAWSON, M.G

“…Abstract Results of a number of studies on the interactions between grayling, Thymallus thymallus L., and its habitat in tributaries of the River Itchen, a…”
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An Evaluation of an Autothermal Aerobic Digestion System by Riley, D.W., Forster, C.F.

“…The specifications of the Safe Sludge Matrix mean that there is a need to examine treatment processes which achieve a degree of digestion. There are a number…”
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Emergence of Atlantic salmon, Salmo salar L., fry in a chalk stream by Riley, W. D., Moore, A.

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effects of stream canopy management on macroinvertebrate communities and juvenile salmonid production in a chalk stream by RILEY, W.D, PAWSON, M.G, QUAYLE, V, IVES, M.J

“…The effects of changes in shading (through riparian canopy removal and re-growth) on juvenile salmon, Salmo salar L., trout, Salmo trutta L., and grayling,…”
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