Understanding the impact of climate change on Macquarie Island

Climate change is impacting ecosystems globally and Macquarie Island is no exception. The weather patterns on the island are changing and the impacts on terrestrial and marine ecosystems are relatively unknown. Macquarie Island is experiencing more extreme weather events, such as increased rainfall and higher temperatures. In February 2022, the island reached a staggering 17 degrees, three degrees hotter than the previous maximum since recording began in 1948. Changing weather patterns on the island have potential impacts for a range of flora and fauna species, as well as increased erosion of coastal areas. The marine environment is also changing with increased sea surface temperatures and ocean acidification, which may impact marine life and those that rely on these species, such as seabirds and seals. The Foundation aims to help facilitate research and management actions to understand how the changing climate may impact Macquarie Island ecosystems and other unique features, including geoconservation and heritage.

Ecosystem recovery following the pest eradication

Invasive vertebrate species have historically caused widespread destruction to Macquarie Island vegetation communities, nesting seabirds and invertebrates. Coastal slopes were eroded by rabbit grazing leading to major landslips and reduced protective vegetation for burrowing and surface nesting seabirds. Following the successful eradication of invasive vertebrate pests in 2011, Macquarie Island’s vegetation is recovering at a rapid rate. Increases in seabird species that were predated by rats and mice, such as burrowing petrels, have also been observed. We want to support research and monitoring to understand more about the island’s ecological recovery – it is part of our vision for an ecosystem protected from threats.