Search Results - "GM Hilton"

Foraging range and habitat associations of non‑breeding Tristan albatrosses: overlap with fisheries and implications for conservation by TA Reid, RM Wanless, GM Hilton, RA Phillips, PG Ryan

“…The Tristan albatross Diomedea dabbanena is Critically Endangered: >99% of adults breed at Gough Island, central South Atlantic Ocean, where chicks are…”
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stable isotopic investigation into the causes of decline in a sub-Antarctic predator, the rockhopper penguin Eudyptes chrysocome by Hilton, Geoff M, Thompson, David R, Sagar, Paul M, Cuthbert, Richard J, Cherel, Yves, Bury, Sarah J

“…The rockhopper penguin (Eudyptes chrysocome) is a conspicuous apex marine predator that has experienced marked population declines throughout most of its…”
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Stable isotope ratios indicate that body condition in migrating passerines is influenced by winter habitat by Bearhop, Stuart, Hilton, Geoff M., Votier, Stephen C., Waldron, Susan

“…Although predicted some time ago, there has been little success in demonstrating that the overall fitness of migratory birds depends on the combined influences…”
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A Forensic Approach to Understanding Diet and Habitat Use from Stable Isotope Analysis of (Avian) Claw Material by Bearhop, S., Furness, R. W., Hilton, G. M., Votier, S. C., Waldron, S.

“…1. The potential of using stable isotope signatures of avian claws in order to infer diet and habitat use was investigated. 2. Highly significant relationships…”
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USING ARTIFICIAL NESTS TO TEST IMPORTANCE OF NESTING MATERIAL AND NEST SHELTER FOR INCUBATION ENERGETICS by Hilton, Geoff M, Hansell, Mike H, Ruxton, Graeme D, Reid, Jane M, Monaghan, Pat

“…Incubation is an energetically demanding process for parents, in part because of the thermodynamic costs of maintaining egg temperature. One might predict that…”
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Effects of experimental defoliation on a population of pedunculate oak (Quercus robur L.) by Hilton, G.M, Packham, J.R, Willis, A.J

“…An experiment simulating defoliation at three levels of severity was conducted on 196 young oaks in a plot at Wolverhampton. In comparison with control plants,…”
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Using Stable Isotopes to Investigate Migratory Connectivity of the Globally Threatened Aquatic Warbler Acrocephalus paludicola by Pain, Deborah J., Green, Rhys E., Gießing, Benedikt, Kozulin, Alexander, Poluda, Anatoly, Ottosson, Ulf, Flade, Martin, Hilton, Geoff M.

“…Understanding the links between breeding and wintering areas of migratory species has important ecological and conservation implications. Recently, stable…”
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Variation in the masting of common beech (Fagus sylvatica L.) in northern Europe over two centuries (1800–2001) by Hilton, G.M., Packham, J.R.

“…Records of beech masting for Germany, Denmark, The Netherlands, England and Sweden over the past two centuries have been collected from published research…”
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Intraflock variation in the speed of escape-flight response on attack by an avian predator by Hilton, G. M.

“…The benefits of flocking to prey species, whether through collective vigilance, dilution of risk, or predator confusion, depend on flock members responding in…”
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Choice of Foraging Area with Respect to Predation Risk in Redshanks: The Effects of Weather and Predator Activity by Hilton, Geoff M., Ruxton, Graeme D., Cresswell, Will

“…Animals often trade off risk of predation and risk of starvation when making foraging decisions. Redshanks, Tringa totanus, wintering in an area of high…”
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Evidence for a rule governing the avoidance of superfluous escape flights by Cresswell, Will, Hilton, Geoff M., Ruxton, Graeme D.

“…When an imminent attack by a predator on a group of birds is signalled to non–detectors only by the departure of the detector, non–detectors may make…”
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Rapid decline of the volcanically threatened Montserrat oriole by Hilton, Geoff M, Atkinson, Phil W, Gray, Gerard A.L, Arendt, Wayne J, Gibbons, David W

“…Prior to 1995, the Montserrat oriole ( Icterus oberi) was confined to ca. 30 km 2 of hill forest on the Lesser Antillean island of Montserrat, but was not…”
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comparative study of digestion in North Atlantic seabirds by Hilton, Geoff M., Furness, Robert W., Houston, David C.

“…We present data on digestive efficiencies and gut retention times of eight North Atlantic seabird species, fed on two fish species - lesser sandeel Ammodytes…”
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ENERGETIC CONSEQUENCES OF CLUTCH TEMPERATURE AND CLUTCH SIZE FOR A UNIPARENTAL INTERMITTENT INCUBATOR: THE STARLING by Reid, J. M, Ruxton, G. D, Monaghan, P, Hilton, G. M

“…In uniparental intermittent incubators, incubating parents must simultaneously regulate both the temperature of the clutch and their own energy level. To…”
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The Effects of Diet Switching and Mixing on Digestion in Seabirds by Hilton, G. M., Furness, R. W., Houston, D. C.

“…1. Animals modulate digestive function in order to optimize digestion of their current diet. Two seabird species were used to test the idea that, as a result,…”
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Which Components of Diet Quality Affect Retention time of Digesta in Seabirds? by Hilton, G. M., Houston, D. C., Furness, R. W.

“…1. The nature of the diet can affect the gut retention time of food consumed by an animal, and a theoretical framework has been developed to explain this in…”
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A sixteen-year record of regional and temporal variation in the fruiting of beech (Fagus sylvatica L.) in England (1980–;1995) by HILTON, G. M., PACKHAM, J. R.

“…Annual production of mast by the beech is highly variable, yet there are few long-term records of the extent of masting which might help to explain the masting…”
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Geographical Variation in the Size of Body Organs in Seabirds by Hilton, G. M., Lilliendahl, K., Solmundsson, J., Houston, D. C., Furness, R. W.

“…1. The size of body organs shows adaptive temporal variation in many animal species. The variation in the size of body organs was examined to see if it is also…”
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Time-activity budgets and site selection of White-headed Ducks Oxyura leucocephala at Burdur Lake, Turkey in late winter by Green, A.J., Fox, A.D., Hughes, B., Hilton, G.M.

“…Diurnal and nocturnal time-activity budgets were compiled for White-headed Ducks at their most important wintering area, Burdur Lake in Turkey, during February…”
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Optimal digestion strategies in seabirds: A modelling approach by Hilton, G M, Ruxton, G D, Furness, R W, Houston, D C

“…It has been shown that there can be marked differences between seabird species in gut retention times and digestive efficiencies, even when eating the same…”
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