I’ve recently given some talks at the 2016 North Wales Mammal Symposium and the 2016 WEEN (Welsh Ecology & Evolution Network) conference. Both have been incredibly enjoyable and informative experiences. Sharing ideas, networking and hearing about other scientific work can not only be incredibly helpful but also very inspiring to help keep us motivated to do what we do. Public events let people hear about what we do, help to spread positive messages, share knowledge but also hopefully inspires positive action on everyone’s behalf as well. For those interested in my abstract from the 2016 WEEN conference, I have attached it below…
Investigating intraguild suppression among Croatia’s carnivores.
Peter, M. Haswell 1, Jones, K. A. 1, Kusak, J. 2 and Hayward, M. W.1
1Bangor University, 2Zagreb University.
Interactions between large carnivores and other species may be responsible for impacts that are disproportionately large relative to their density. The phenomenon known as mesopredator release is the resultant increase of mesopredator populations after a decline in larger predators. Intraguild predation, competitive killing and interference competition are common where niche and body mass between predators overlap. Interference interactions from larger carnivores pose risk to smaller mesopredators and have the ability to affect population demography in a manner that is not always density dependent. Apex predators may not always suppress spatio-temporal patterns, behaviour and densities of mesopredators. In some contexts however, suppression by apex predators can result in landscape scale distribution patterns between predators. Suppressive interactions between carnivores combined with bottom-up effects of environmental productivity can ultimately drive prey species abundance and the resultant ecosystem dynamics.
The mesopredator release hypothesis and the idea of larger predators suppressing smaller predators has received relatively little empirical study, particularly in Europe. Given the vulnerability of large carnivores to anthropogenic disturbance, a growing human population and intensifying resource consumption, it becomes increasingly important to understand ecological processes so that land can be managed appropriately. We present preliminary findings showing that in an area with minimal human interference (Plitvička Jezera national park), red foxes (Vulpes vulpes) adjusted their foraging behaviour in response to a risk cue (wolf urine) suggesting presence of the gray wolf (Canis lupus). Additional investigations being undertaken to understand behavioural interactions between Croatia’s carnivore guild as well as the potential for anthropogenic interference will also be discussed.