Stable isotope analysis has emerged as one of the primary means for examining the
structure and dynamics of food webs, and numerous analytical approaches are now …

I outline how understanding the mechanism of behavioural plasticity is important for
predicting how organisms will respond to rapidly changing and novel environments. I define …

Behavioral traits and diet were traditionally thought to be highly plastic within individuals.
This view was espoused in the widespread use of optimality models, which broadly predict …

Apex predators are often assumed to be dietary generalists and, by feeding on prey from
multiple basal nutrient sources, serve to couple discrete food webs. But there is increasing …

Technological advances in recent years have seen an explosion of tracking and stable
isotope studies of seabirds, often involving repeated measures from the same individuals …

The large amount of discards produced by commercial fisheries can have major impacts on
marine predator populations: this abundant food may increase populations of some …

Many established models of animal foraging assume that individuals are ecologically
equivalent. However, it is increasingly recognized that populations may comprise individuals …

Spatial and social behaviour are fundamental aspects of an animal's biology, and their
social and spatial environments are indelibly linked through mutual causes and shared …

Trophic relationships are a central theme in ecology and play a crucial role in the survival of
organisms, because the availability of food resources varies over time and space. Until …

Declining Arctic sea ice is increasing polar bear land use. Polar bears on land are thought to
minimize activity to conserve energy. Here, we measure the daily energy expenditure (DEE) …