This article studies the effects of adaptive changes in predator and/or prey activities on the Lotka-Volterra predator-prey population dynamics. The model assumes the classical foraging-predation risk trade-offs: increased activity increases population growth rate, but it also increases mortality rate. The model considers three scenarios: prey only are adaptive, predators only are adaptive, and...

Mobile positioning is recognised to be one of the most promising new sources data for production fast and cost-effective statistics regarding population mobility. Considerable interest has been shown by government institutions in their search a way use mobile produce official statistics, although date there are only few examples successful projects. Apart from access sampling, main challenges r...