Exotic species can cause a major threat to ecosystems, because of its effect on reducing natural biodiversity. The aim of this paper is to study the effects of the exotic Acacia saligna on native plant biodiversity of northern part of Jordan. Within each studied area we estimated plant species...

Settlement by Anglo-Americans in the desert shrublands of North America resulted in the introduction and subsequent invasion of multiple nonnative grass species. These invasions have altered presettlement fire regimes, resulted in conversion of native perennial shrublands to nonnative annual...

We report on the distribution and abundance of the Iraqi crab Elamenopsis kempi in the Panama Canal and investigate possible interactions of this species with another invader, the North American mud crab, Rhithropanopeus harrisii. While more widespread than R. harrisii, E. kempi is currently...

The unintentional introduction of the Asian shore crab, Hemigrapsus sanguineus, along the French coast during the mid 1990s has revealed the problematic effects that invasive species can have on biodiversity, entering into competition with native crab species. This invasion along coastal ecosystems ...

Introduction of Macrobrachium rosenbergii to Brazil for prawn farming has resulted in escapes to the local natural environment. In some areas risk of feral populations establishing in local environments is considered low due to a lack of suitable habitat for completing the life cycle. In contrast,...

Palaemon macrodactylus, an exotic shrimp native to the northwest Pacific Ocean, has been recorded in many estuaries along the Atlantic coast of Europe since the late 1990's. In this study, a regular monthly survey, held since 1992 of the middle section of the Gironde estuary, revealed this species' ...

In marine sedimentary coastal environments such as the Wadden Sea (coastal south-eastern North Sea) shells of epibenthic molluscs are the only major available settlement substrate for an increasing number of alien sessile organisms. We investigated the effects of Pacific oyster Crassostrea gigas...

The presence and abundance of non-indigenous, and/or harmful or toxic dinoflagellate species in ballast sediments is examined for 65 cargo ships visiting ports on the East coast of Canada, as part of the Canadian Aquatic Invasive Species Network (CAISN). Ships visiting several ports in the...

Spiders and beetles provide important ecosystem services in agriculture; however, optimum strategies to promote their density and diversity on dairy farms have received little attention. This study aimed to quantify the effects of farming practice (conventional vs. organic), fencing (fenced vs....

Restoration by natural successional processes after removal of perturbations may not be feasible for many degraded ecosystems. Controlling major ecological threats such as non-native ungulates is often a critical first step toward restoring native communities but past degradation, interactions with ...