Sentence examples for alien introductions from inspiring English sources

But part of the objection to alien introductions has an ideological flavour.

Modern conservation is generally against the idea of species being spread into novel habitats, and he opposes Mr Donlan's idea on those grounds, as well.One reason conservationists try to stop alien introductions is pragmatic they sometimes do serious damage to native species.

Srinagar city is one of the fastest-growing urban centres where frequent disturbances due to rapid infrastructure development create bare niches and pave way for alien introductions.

Nonetheless, not all alien introductions become successful invasions (Groves 1986 , 1991 van Kleunen and Johnson 2007; Moles et al. 2008).

Furthermore, the low archaeophyte to neophyte ratios in all habitats and the very small absolute numbers of archaeophytes indicate an urban environment submitted to a low rate of alien introduction.

The relationship between import values and alien species introductions is assumed to be nonlinear, saturating at large import values20,21.

Hulme, P. E. Invasion pathways at a crossroad: policy and research challenges for managing alien species introductions.

This data set allows us to analyse variations in the rate of alien species introductions across space and time in a consistent way over large geographic scales.

This finding supports the suggested importance of trade as a major driver of alien species introductions at least for invertebrates and algae.

Additionally, while most studies tend to work within a shorter temporal scale, the impacts of the alien plant introductions may differ depending on the year or seasonal time leading to the differing results reported.

An exception is the Biosecurity Act in New Zealand adopted in 1993, which represents the most comprehensive and stringent national law for the prevention of alien species introductions currently in force.