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Novel assemblages: challenges for ecology and the conservation/restoration orthodoxy
Richard J Hobbs (1) 1 School of Plant Biology, University of Western Australia, Crawley, WA 6009, Australia Much has been written about changes in species distributions in response to climate change and other environmental changes and, in addition, the human role in engineering change through transport of species outside their normal ranges. This deliberate transport…
Climate change versus other signals influencing spatial and temporal variation in composition and structure of beetle assemblages along an altitudinal transect in southern Tasmania
Lynne Forster (1) and Simon Grove (2) 1 University of Tasmania, Private Bag 98, Hobart, Tasmania, 7001, Lynette.Forster@utas.edu.au 2 Tasmanian Museum and Art Gallery, GPO Box 1164, Hobart, Tasmania, 7001, Simon.Grove@tmag.tas.gov.au Altitudinal shifts in the distribution and/or composition of species communities or assemblages are often portrayed as demonstrating early signals of climate change. Mountain-top assemblages are often suggested…
Light-driven range expansions and the underwater greening of the poles
Dr Graeme Clark1, Dr Jonathan Stark2, Dr Ben Raymond3, Professor Emma Johnston1 1University Of New South Wales, Randwick, Australia, 2Australian Antarctic Division, Hobart, Australia, 3Institute for Marine and Antarctic Studies (IMAS), Hobart, Australia Community state on shallow polar seabed is tightly linked to sea-ice cover. Areas with prolonged sea-ice cover support unique endemic invertebrate-dominated communities,…
SEA Sentinels project – A collaborative, multi-disciplinary framework using seabirds and marine mammals as indicators in rapidly changing seas
Associate Prof. Mary-Anne Lea1, Dr Racheal Alderman2, Prof. John Arnould3, Dr Cathy Bulman4, Dr Andre Chiaradia5, Dr Peter Dann5, Prof. Simon Goldsworthy6, Prof. Rob Harcourt7, Dr Eric Woehler8, Dr Rebecca McIntosh5, Dr Alistair Hobday4 1IMAS, University of Tasmania, Hobart, Australia, 2Marine Conservation Group, Department of Primary Industries, Parks, Water and Environment, Hobart, Australia, 3Deakin University,…
Spatially explicit, cross-continental predictions of climate change-related local extinction risk and richness decline in bumblebees
Mr Peter Soroye1, Dr Tim Newbold2, Dr Jeremy Kerr1 1University Of Ottawa, Ottawa, Canada, 2University College London, London, United Kingdom Bumblebee (Bombus) species across North America and Europe are declining in range size and abundance across their ranges, linked in part to rapid recent climate change. Niche theory and physiology suggest that species’ physiological limits…
rmaxent: rapid projection and interrogation of Maxent models in R
Dr John B Baumgartner1, Dr Peter D Wilson2, Dr Linda J Beaumont1, Dr Manuel Esperón-Rodríguez3 1Macquarie University, North Ryde, Australia, 2Royal Botanic Gardens Sydney, Sydney, Australia, 3Western Sydney University, Richmond, Australia Correlative species distribution models (SDMs) are presently the most common tool for predicting habitat suitability. Maxent, a machine-learning regression-type approach to fitting SDMs based…