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Invasive plant species alter native community composition, deplete species diversity, affect ecosystem process and thus cause huge economic and ecological imbalance. These plants possess a set of remarkable traits that allow them to colonize huge areas upon invasion. Studies of invasive species introductions in the past revealed that the impacts of their invasion are complex and can permanently alter the structure and function of communities, cause local extinctions and changes in ecosystem processes. The increased incidence of invasion around the world poses a major threat to...

Weeds constitute an integral part of any productive terrestrial ecosystem and are specialized form of vegetation highly successful in agricultural lands. They are characterized by rapid growth, short lifecycle and wide ecological amplitude. The evolution of weeds has been markedly influenced by agriculture and human disturbances. The weeds are commonly known as alien invasive species which spread very fast at the cost of native vegetations. Invasive species means an alien species which becomes established in natural or semi-natural ecosystems or habitats, is an agent of change, and threatens...