Description of the subject. The geographic distributions of a species, be it native or alien, is expected to be limited at some point by environmental conditions. In this situation, a range edge equilibrium (REE) takes place, i.e., populations occurring beyond the edge have a growth rate reduced...

The ecological and economic impact of invasive species is perceived at all levels, locally, regionally and globally. The ecological invasion is considered the second serious threat to natural habitats by their fragmentation and loss. Plant invasion is a difficult phenomenon to control if the...

This paper aims to highlight the direct and indirect allelopathic influences showed by species Ailanthus altissima, through morphological and biological investigations. An important factor in the success of Ailanthus species invasion is the release of allelopathic compounds that influence...

Among the Mediterranean countries, Turkey has the richest freshwater fish fauna. Turkey is located in the intersection of different zoogeographic regions and Anatolia is highly rich in terms of biodiversity. Freshwater fish fauna of Turkey consists of more than 350 species and about one-third of...

Falcataria moluccana (Miq.) Barneby and Grimes is a large tree that has become invasive in forests and developed landscapes across many Pacific islands. A fast-growing nitrogen fixing species, it transforms invaded ecosystems by dramatically increasing nutrient inputs, suppressing native species...

Parthenium weed (Parthenium hysterophorus L.) is an invasive alien species whose mode of introduction is uncertain, although it was first recorded in Ethiopia in 1968. Since then it has been colonizing disturbed sites very aggressively, impacting pastures, croplands and forests by outcompeting...

Chromolaena odorata (L.) King & Robinson (Asteraceae), an invasive alien plant of terrestrial habitat in many tropical and sub-tropical regions of the world, was investigated in the South-West Ecological Zone of Nigeria. Investigations, including field observations on C. odorata and a survey of...

In most natural systems worldwide, land managers are combating the spread of invasive weeds and attempting to minimize their damaging impacts. Often invasion is linked to disturbance regime shifts, and particularly in case of native invasives disturbance is often critical in the incursion behavior. ...

The social, economic and environmental impacts of invasive plants are well recognised. However, the social and economic costs of managing and eradicating invasive plants are rarely accounted for in the spatial prioritisation of funding for weed management. Gamba grass (Andropogon gayanus Kunth.) is ...

Invasive alien species are introduced from other ecosystems and establish, producing viable descendency that spread for significant distances from the mother plants, potentially cause damage to the environment. The aim of the current study is to evaluate the first responses of the invasion process...