Invasion ecology
The introduction of species from where they evolved to new parts of the world is now occurring at an unprecedented rate, with rising numbers of introductions on every continent. This global biotic exchange has consequences for the composition and functioning of communities and ecosystems as new interactions between introduced and resident species are forged. Some introduced species may become so abundant and widespread, that they can alter community dynamics and ecosystem processes, sometimes to the detriment of resident species. Our research addresses important questions about the causes and consequences of these invasions by introduced species:
The introduction of species from where they evolved to new parts of the world is now occurring at an unprecedented rate, with rising numbers of introductions on every continent. This global biotic exchange has consequences for the composition and functioning of communities and ecosystems as new interactions between introduced and resident species are forged. Some introduced species may become so abundant and widespread, that they can alter community dynamics and ecosystem processes, sometimes to the detriment of resident species. Our research addresses important questions about the causes and consequences of these invasions by introduced species:
- How do invasive species interact with resident species, and what ecological and socio-economic impacts result from those interactions?
- Can we predict which introduced species are most likely to become invasive, so that introduction can be avoided?
- Can we make evidence-based, cost-effective decisions on which invasive species should be prioritised for management or control?
- Why are some habitats, communities and regions more vulnerable to invasions than others?
- What are the evolutionary consequences of invasions, and are those consequences predictable?
Introduced New Zealand Flax (Phormium tenax) covering a hillside on St Helena, a heavily invaded oceanic island.