Species on the move in Antarctic terrestrial communities

Sharon A. Robinson (1,2), Melinda J. Waterman (1,3), Diana H. King (1,4), Johanna D. Turnbull (1,5), Michael B. Ashcroft (1,6) Jessica Bramley-Alves (1,7), Ellen Ryan-Colton (1,8), Jane Wasley (9)

1Centre for Sustainable Ecosystem Solutions, Faculty of Science, Medicine and Health, University of Wollongong, NSW 2522, Australia,

2sharonr@uow.edu.au, @Antarcticmoss,

3melindaw@uow.edu.au ,

4dhk442@uowmail.edu.au,

5johannat@uow.edu.au,

6ashcroft@uow.edu.au,

7jba605@gmail.com,

8ellen.ryan.colton@gmail.com

9Australian Antarctic Division, Department of Environment, Kingston, Tasmania, 7050, Australia, Jane.Wasley@aad.gov.au

Antarctica has experienced major changes in temperature, wind speed and stratospheric ozone levels over the last 50 years. Whilst West Antarctica and the peninsula have shown rapid warming and consequent ecosystem change, East Antarctica appeared to be little impacted by climate warming, thus biological changes were predicted to be relatively slow. Detecting the biological effects of Antarctic climate change has been hindered by the paucity of long-term data sets, particularly for organisms that have been exposed to these changes throughout their lives. We have shown that radiocarbon signals preserved along shoots of the dominant Antarctic moss flora can be used to determine accurate growth rates over a period of several decades, allowing us to explore the influence of environmental variables on growth and providing a dramatic demonstration of the effects of the recent climate change. This work has revealed evidence of a drying trend in several of the extensive moss beds in the Windmill Islands region of East Antarctica. Long-term monitoring of vegetation communities along moisture gradients at two sites commenced in 2003 using three complementary sampling regimes; turf water content, digitally determined broad-scale percent cover of vegetation and finer scale relative abundance of species. These methods indicate that species are on the move even in those regions were it is hard to detect evidence of climate change. These findings highlight the importance of developing a robust Antarctic terrestrial and near-shore observing network and considering the efficacy of the current protected areas across the Antarctic continent to adequately protect biodiversity.

Species on the Move

An International Conference Series

The conference brings together scientists and natural resource managers working in the disciplines of global change, biogeography and evolution, and relevant in contexts of natural resource management, biodiversity management and conservation, and theoretical ecology.


Species responses to climate change is a rapidly evolving research field, however, much of our progress is being made in independent research areas: e.g. understanding the process vs responding to the implications, terrestrial vs marine ecosystems, global meta-analyses vs in depth species-specific approaches. This interdisciplinary conference develops connections between these parallel streams, and across temporal and spatial scales.

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