Issue 5.9 is now available online, including articles on telemetry and sensors, markers and sequences, modelling and model assessment, and extending current data. In addition there are 2 freely available applications: MeCa, a toolbox for the calculation of metabolism in heterogeneous streams and Rphylip: an R interface for PHYLIP
About the cover: This month we have a Cape gannet (Morus capensis) at its nest on Bird Island, Algoa Bay, South Africa. Cape gannets are colonially-breeding seabirds, foraging as top predators of commercially-important epipelagic fish resources. In “An automated approach towards measuring time-activity budgets in colonial seabirds”, the authors demonstrate an unobtrusive, simple, long-term method for remotely recording nest attendance of colonial seabirds using advancements in VHF transmitter technology. Time spent away from the nest (foraging trip duration) was shown to be a reliable proxy for foraging effort. These time-activity budget data can potentially be used to interpret the real-time state of local marine conditions or provide a mechanism for ecological hypothesis testing using the fine-scale data generated. This has applicability for several colonial animal species.
Photo © David B. Green.