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Can Ethograms Be Automatically Generated Using Body Acceleration Data from Free-Ranging Birds?
This work demonstrates an automated procedure to categorize behavior from body acceleration, together with the release of a user-friendly computer application, “Ethographer”, which has the potential to detect previously unknown types of behavior and unknown sequences of some behaviors.
Trophic level asynchrony in rates of phenological change for marine, freshwater and terrestrial environments
Recent changes in the seasonal timing (phenology) of familiar biological events have been one of the most conspicuous signs of climate change. However, the lack of a standardized approach to…
The role of industrial fisheries and oceanographic change in the decline of North Sea black‐legged kittiwakes
This study shows that adequate monitoring of the effect of a fishery or of environmental change on seabird populations needs to include survival as well as breeding success.
Scale‐dependent climate signals drive breeding phenology of three seabird species
This work tested the hypothesis that regulation of breeding onset should reflect the scale at which organisms perceive their environment by comparing phenology of three seabird species at a North Sea colony, and found correlations among climate patterns at different scales are likely to change in the future.
From plankton to top predators: bottom-up control of a marine food web across four trophic levels.
- M. Frederiksen, M. Edwards, A. Richardson, N. Halliday, S. Wanless
- Environmental ScienceThe Journal of animal ecology
- 1 November 2006
These links are consistent with bottom-up ecosystem regulation and indicate how climate-driven changes in plankton communities can affect top predators and potentially human fisheries through the dynamics of key mid-trophic fish.
Evidence of intra-specific competition for food in a pelagic seabird
It is shown that the per capita population growth rates of northern gannet Morus bassanus at colonies in Britain and Ireland have declined with increasing population size, and a model is developed which demonstrates that disturbance of fish alone can readily generate conditions under which gannets at larger colonies have to travel further to obtain food.
Low energy values of fish as a probable cause of a major seabird breeding failure in the North Sea
Poor food quality appeared to be the proximate cause of seabird breeding failure in 2004 giving support to the 'junk-food' hypothesis, which will be particularly sensitive to reductions in the energy value of food items.
Sex-specific foraging behaviour in a monomorphic seabird
- S. Lewis, S. Benvenuti, K. Hamer
- Environmental Science, BiologyProceedings of the Royal Society of London…
- 22 August 2002
The need to investigate sexual differences in the foraging behaviour of seabirds and other species more closely is highlighted, in order to test alternative theories that do not rely on differences in body size.
Phenological sensitivity to climate across taxa and trophic levels
A Climate Sensitivity Profile approach is applied to 10,003 terrestrial and aquatic phenological data sets, spatially matched to temperature and precipitation data, to quantify variation in climate sensitivity and detected systematic variation in the direction and magnitude of phenological climate sensitivity.
Telomere loss in relation to age and early environment in long-lived birds
Telomere dynamics in two long–lived seabirds, the European shag and the wandering albatross, are examined, finding high inter–individual variation in the magnitude of telomere loss, much of which was explained by circumstances during growth.