1. Biological invasion can permanently alter ecosystem structure and function. Invasive species are difficult to eradicate, so methods for constraining invasions would be ecologically valuable. We examined the potential of ecological restoration to constrain invasion of an old field by Agropyron cristatum , an introduced C 3 grass. 2. A field experiment was conducted in the northern Great Plain...

The paper develops a simple economic model of a biological invasion. The natural growth of the invasion is non-convex and the immediate cost of controlling the invasion depends on the level of current control as well as the current size of the invasion. Greater control raises control costs today while reducing damages now and in the future. In addition, by decreasing the size of the invasion, i...

Invasion of an exotic species initiated by its local introduction is considered subject to intraguild predation (IGP). Mathematically, the system dynamics is described by three nonlinear diffusion-reaction equations in two spatial dimensions. The key factors that determine successful invasion are investigated bymeans of extensive numerical simulations.The results reveal high asymmetry. An exoti...

In recent years, close examination of biological invasions shows that ecosystems around the world are subjected to loss of biodiversity as a result of the interactions between native species and the invaders (Whitfield et al. 2007). These interactions may happen naturally due to biotic dispersal, but human travel and deliberate translocation of organisms worldwide have undoubtedly accelerated t...

Biological invasion generates serious threats to global biodiversity. Exotic species usually have high environmental adaptability and tolerance, which is one of the bases their invasion. Except for biological threats, other problems like extreme cold or hot events, soil drought, saline-alkali flood are emerging constantly on a scale. In background multiple interfering with existing habitats, ex...

Increasing levels of global trade and intercontinental travel have been cited as the major causes of biological invasion. However, indirect factors such as economic development that affect the intensity of invasion have not been quantitatively explored. Herein, using principal factor analysis, we investigated the relationship between biological invasion and economic development together with cl...

Biological invasions form a major threat to the provision of ecosystems productsand services and can affect ecosystems across a wide spectrum of bioclimatic conditions.Therefore, it is important to systematically monitor the spread of species over broad regions. Ithas long been recognized that remote sensing and geographical information system couldcontribute to this capacity. This paper aims t...