Although dispersal is generally viewed as a crucial determinant for the fitness of any
organism, our understanding of its role in the persistence and spread of plant populations …

We consider a two-species competition model in a one-dimensional advective environment,
where individuals are exposed to unidirectional flow. The two species follow the same …

Ecosystems are marvelous assemblages of individuals that grow, reproduce, interact with
one another, move about in space, and eventually die. Ecosystems also provide essential …

Emigration is a fundamental process affecting species' local, regional, and large-scale
dynamics. The paradigmatic view in ecology is that emigration is density independent (DIE) …

Ecologists often assume that range expansion will be fastest in landscapes composed
entirely of the highest‐quality habitat. Theoretical models, however, show that range …

This paper analyzes source–sink systems with asymmetric dispersal between two patches.
Complete analysis on the models demonstrates a mechanism by which the dispersal …

Invasion of alien species is one of the major threats for natural community structures,
potentially leading to high economic and environmental costs. In this work, we study through …

Human population growth leads to drastic changes in landscape structure that often result in
fragmentation. Fragmentation modifies the landscape and divides it into smaller habitat …

Fragmentation creates landscape-level spatial heterogeneity which in turn influences
population dynamics of the resident species. This often leads to declines in abundance of …

An important problem in spatial ecology is to understand how population-scale patterns
emerge from individual-level birth, death, and movement processes. These processes …