Predators of all kinds, be they lions hunting in the Serengeti or fishermen searching for their catch, display various collective strategies. A common strategy is to share information about the location of prey. However, depending on the spatial characteristics and mobility of predators and prey, information sharing can either improve or hinder individual success. Here, our goal is to investigate the interacting effects of space and information sharing on predation efficiency, represented by the expected rate at which prey are found and consumed.
We derive a feeding functional response that accounts for both spatio-temporal heterogeneity and communication, and validate this mathematical analysis with a computational agent-based model. This agent-based model has an explicit yet minimal representation of space, as well as information sharing about the location of prey. The analytical model simplifies predator behavior into a few discrete states and one essential trade-off, between the individual benefit of acquiring information and the cost of creating spatial and temporal correlation between predators. Despite the absence of an explicit spatial dimension in these equations, they quantitatively predict the predator consumption rates measured in the agent-based simulations across the explored parameter space.
Together, the mathematical analysis and agent-based simulations identify the conditions for when there is a benefit to sharing information, and also when there is a cost.
Research news | 2018-04-19
New study of UNESCO biosphere reserves sheds light on how people learn to live with social-ecological complexity
Research news | 2018-04-16
Entrepreneurs, NGO’s and others working on transforming the agricultural system into a more sustainable one struggle amid dominant focus on growth-oriented strategies
Research news | 2018-04-12
New documentary film highlights social-ecological challenges facing Ethiopia's food production systems
Educational news | 2018-04-12
Will help practitioners use resilience thinking as a tool to improve development practice
General news | 2018-04-12
The Stockholm Resilience Centre launches new voluntary system for staff to set targets to reduce emissions
Research news | 2018-04-11
Conservation efforts in tropical forest communities have great potential but must avoid exacerbating income inequalities