More than 8000 islands surround Australia’s coast - from tropical to temperate to sub-Antarctic climates; from large populated islands to tiny uninhabited
“Many people aren’t aware of how many islands we have and how diverse they are,” reflects Associate Professor Salit Kark, project leader for Project 4.2: Saving species on Australian islands.
While the ecology of each island is different, native threatened island species often face similar conservation challenges resulting from the impacts of invasive species, habitat loss and other factors.
“Australia’s islands play a very important role in threatened species recovery. Not only do endemic island species need protection, but islands can also be used as refuges for species that are threatened on the mainland,” says Associate Professor Kark.
“Many of Australia’s islands are already undergoing conservation activities to protect native species, and we want to assist in developing more sharing of data, knowledge and experience.”
The Threatened Species Recovery Hub’s Project 4.2 aims to maximise conservation benefits by facilitating a more coordinated approach to island conservation at a national scale.
Work has started with a collaborative project underway at Stradbroke and Moreton Island off the southeast Queensland coastline.
Researchers and students are working with partners and stakeholders, such as the Quandamooka aboriginal people and environment groups, who are actively engaged in on-ground threatened species recovery – namely feral animal eradication.
Macquarie Island, home to thousands of threatened seabirds, is another example where Project 4.2 can maximize conservation benefits says fellow project leader Dr. Justine Shaw.
“The island recently underwent successful eradication of three vertebrate pests. We’re investigating how best to monitor and quantify threatened species and ecosystem recovery on the island in the wake of this eradication.
“This research will assist in decision making around island eradications globally.”
The research team will work closely with a wide range of stakeholders to fill knowledge gaps, facilitate sharing and learning from other island experiences, improve prioritisation and demonstrate strategies on how, where and when to invest in on-ground island management activities.
Salit and Justine recently ran a workshop as part of the Island Arks Symposium IV on Norfolk Island.
Image: Elephant seals on Green Gorge beach, Macquarie Island. Photo by Dr Justine Shaw.
New Hub research has quantified the extent of predation by cats on Australia’s birds and identified the species and types of birds most vulnerable to cats. The team found that cats kill over 1 million birds per day in Australia. The total is made up of an estimated 316 million birds killed by feral cats and 61 million killed by pet cats each year.
Sound recorders have been installed across farm land in south-western Victoria and on Kangaroo Island in research to help threatened glossy black-cockatoos and south-eastern red-tailed black-cockatoos, by learning more about their breeding.
As cats and foxes have spread across Australia, islands have prevented the extinctions of several mammals like the boodie. Associate Professor Sarah Legge discusses the importance of safe havens and also summarizes the highlights of a recent 'safe-haven' symposium held at the International Mammalogy Congress in Perth.
The TSR Hub is one of six National Environmental Science Programme hubs and each is making its own important contribution to the national effort to recover our threatened species. Hub Director Brendan Wintle takes a look beyond the TSR Hub to highlight the good work being done on threatened species by our sister hubs.
On sub-Antarctic Macquarie Island a multi-million dollar eradication program removed cats in 2000 and rabbits, rats and mice in 2013. In the aftermath of this effort, beautiful things are emerging. Dr Justine Shaw is leading a TSR Hub project to learn from this experience and monitor how ecosystems respond.