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Costs and benefits of rodent eradication on Lord Howe Island Australia
Island and Ocean Ecosystems, BRB
Available Online

Bennett, Jeff

,

Gillespie, Robert

2017
Invasive species compete with endemic species and if successful can displace native species in the host region (Cororaton et al., 2009).
Zero-tolerance biosecurity protects high-conservation-value island nature reserve.
BRB
Available Online

Scott,John K. McKirdy, Simon J. van der Merwe, Johann Green, Roy Burbidge, Andrew A. Pickles, Greg Hardie,Darryl C. Morris, Keith Kendrick, Peter G. Thomas, Melissa L. Horton, Kristin L. O’Conner, Simon Downs, Justin Stoklosa, Richard Lagdon, Russell Marks, Barbara Naim, Malcolm Mengersen, Kerrie

2017
Barrow Island, north-west coast of Australia, is one of the world’s significant conservation areas, harboring marsupials that have become extinct or threatened on mainland Australia as well as a rich diversity of plants and animals, some endemic. Access to construct a Liquefied Natural Gas (LNG) plant, Australia’s largest infrastructure development, on the island was conditional on no non-indigenous species (NIS) becoming established. We developed a comprehensive biosecurity system to protect the island’s biodiversity. From 2009 to 2015 more than 0.5 million passengers and 12.2 million tonnes of freight were transported to the island under the biosecurity system, requiring 1.5 million hrs of inspections. No establishments of NIS were detected. We made four observations that will assist development of biosecurity systems. Firstly, the frequency of detections of organisms corresponded best to a mixture log-normal distribution including the high number of zero inspections and extreme values involving rare incursions. Secondly, comprehensive knowledge of the island’s biota allowed estimation of false positive detections (62% native species). Thirdly, detections at the border did not predict incursions on the island. Fourthly, the workforce detected more than half post-border incursions (59%). Similar approaches can and should be implemented for all areas of significant conservation value.
Potential Environmental Weeds in Australia
BRB

Csurches, S

1998
How the Macquarie Island parakeet became extinct / by R. H. Taylor
BRB

Taylor, R.H.

1979
Recruitment dynamics of invasive species in rainforest habitats following Cyclone Larry
BRB
Available Online

Bradford, M.J.

,

Ford, A.F.

,

Galway, K.E.

,

Metcalfe, D.J.

,

Murphy, H.T.

,

Sydes, T.A.

,

Westcott, D.J.

2008
In tropical forests, natural disturbance creates opportunities for species to claim previously utilized space and resources and is considered an important mechanism in the maintenance of species diversity. However, ecologists have long recognized that disturbance also promotes exotic plant invasions. Cyclones cause extensive defoliation, loss of major branches and multiple tree falls, resulting in a significantly more open canopy and increased light and heat levels in the understorey. The widespread and massive disturbance caused by cyclones provides ideal conditions for rapid recruitment and spread of invasive species. The ecological roles of invasive species in rainforest habitats following such a severe disturbance are poorly understood. Severe category 4 Cyclone Larry crossed the North Queensland coast in March 2006 causing massive disturbance to rainforest habitats from Tully to Cairns and west to the Atherton Tablelands. We established 10 plots in an area extensively damaged by this cyclone near El Arish in North Queensland. On each plot nine 2×2 m quadrats were established with three quadrats per plot in each of the following treatments: (i) complete debris removal down to the soil layer, (ii) removal of coarse woody debris only, and (iii) uncleared. We monitored recruitment, growth and mortality of all native and invasive species in the 90 quadrats every 3 months since the cyclone. Here we present the recruitment dynamics of invasive species across the study area in relation to the level of disturbance, the type of quadrat treatment, and the diversity and abundance of the native recruiting flora over the first 12 months post?cyclone. Our results suggest that invasive species will mostly comprise a transient component of the flora in the early stages of the successional response. However, some species may have longer?term effects on the successional trajectory of the rainforest and future forest composition and structure.

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