We consider a population that adapts to a gradually changing environment. Our aim is to describe how ecological and genetic factors combine to determine the genetic basis of adaptation. Specifically, we consider the evolution of a polygenic trait that is under stabilizing selection with a moving optimum. The ecological dynamics are defined by the strength of selection, sigma, and the speed of t...

How does the process of life-history evolution interplay with population dynamics? Almost all models that have addressed this question assume that any combination of phenotypic traits uniquely determine the ecological population state. Here we show that if multiple ecological equilibria can exist, the evolution of a trait that relates to competitive performance can undergo adaptive reversals th...

Geographic and ecological analysis may provide investigators useful ecological information for the control of shigellosis. This paper provides distribution of individual Shigella species in space, and ecological covariates for shigellosis in Nha Trang, Vietnam. Data on shigellosis in neighborhoods were used to identify ecological covariates. A Bayesian hierarchical model was used to obtain join...

Human societies are remarkably variable in terms of their size, complexity, social structure, marriage systems and norms. This diversity has sometimes been raised as an obstacle to taking an evolutionary approach to human behaviour. However, a substantial proportion of the variation between human societies might represent local adaptation to ecological conditions and would thus be very much ame...

Non-conventional stable isotopes have received increasing attention in the past decade to investigate multi-level ecological connections from individuals ecosystems. More recently, trace and non-nutrient elements, potentially toxic (i.e., Hg), also been recognized of great significance discriminate sources, transports, bioaccumulation, as well trophic transfers. In contrast, lithium (Li) concen...

The ubiquity of scale-free patterns in ecological systems has raised the possibility that these systems operate near criticality. Critical phenomena (CP) require the tuning of parameters and typically exhibit a narrow scaling region in which power laws hold. Here we show that an individual-based predator-prey model exhibits scaling properties similar to CP, generated by a percolation-like trans...