Drivers of biological invasion: what we are learning from marine systems

17 August 2012

Presented by A/Prof. Emma Johnston, Biological, Environmental, & Earth Sciences, UNSW. Host: Figueira lab.

When an invader reaches a new location, multiple biotic and abiotic factors can influence its establishment and spread. Biotic processes such as competition, facilitation and predation can eitherlimit or promote invasion, as can emergent community-level traits such as species diversity. Abiotic factors are also important, as disturbances regulate resource availability and environmental conditions determine the suitability of an invader to a new environment. Complexities arise when biotic and abiotic factors are influenced by anthropogenic activities. Anthropogenic activities createextreme environments that are contaminated, disturbed, modified and hyper-connected. A mechanistic understanding of the role of anthropogenic activity in driving invasion is vital to the development of management responses. I discuss recent empirical investigations of the drivers of non-indigenous species success in marine systems. I attempt to prioritise the factors that influence invasion, identify important interactions and present a scan of potential management solutions.

Time: 1-2pm

Location: DT Anderson Lecture Theatre, A08