Invasive Species Management A Handbook of Principles and Techniques
by Mick Clout
Edition: 1st., 2009
Invasive alien species are now one of the main threats to biodiversity worldwide. The transport of organisms by humans since earliest times, and now through increased levels of trade and tourism, has led to the widespread breaching of natural biogeographic barriers at historically unprecedented rates. The consequences for native biota and natural ecosystem processes can be severe, especially in previously isolated ecosystems. Global climate change further exacerbates the spread of alien species, as climatic zones shift and potential ranges expand.
Th is book focuses on those alien species, spread inadvertently or deliberately by humans, which invade natural or semi-natural ecosystems. Such species are agents of ecological change, which includes extinction or decline of vulnerable endemic species, alteration of the structure and composition of communities, loss of ecosystem services, and disruption of successional pathways. Alien species causing ecological change can be termed ‘invasive alien species’, or merely ‘invasive species’.
Th ese invaders are also given many other names, including pests, weeds, exotics, aliens, introduced species, or non-indigenous species.