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Habitat Mapping and Dynamic Modelling of Species Distributions

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Habitat Mapping and Dynamic Modelling of Species Distributions With the collaboration of: Research supported by: Water for a Healthy Country CLLAMM Dynamic Habitat: Habitat mapping and dynamic modelling of species distributions Sunil K. Sharma, Simon N. Benger, Milena B. Fernandes, Ian T. Webster and Jason E. Tanner June 2009 Water for a Healthy Country CLLAMM Dynamic Habitat: Habitat mapping and dynamic modelling of species distributions Sunil K. Sharma1, Simon N. Benger2, Milena B. Fernandes1, Ian T. Webster3 and Jason E. Tanner1,* 1SARDI Aquatic Sciences, PO Box 120, Henley Beach, SA 5022. 2School of Geography, Population and Environmental Management Flinders University, GPO Box 2100, Adelaide, SA 5001. 3CSIRO Land & Water, GPO Box 1666, Canberra, ACT 2601. *Corresponding author: [email protected] June 2009 Water for a Healthy Country Flagship Report series ISSN: 1835-095X ISBN: 978 0 643 09780 3 The Water for a Healthy Country National Research Flagship is a research partnership between CSIRO, state and Australian governments, private and public industry and other research providers. The Flagship aims to achieve a tenfold increase in the economic, social and environmental benefits from water by 2025. The Australian Government, through the Collaboration Fund, provides $97M over seven years to the National Research Flagships to further enhance collaboration between CSIRO, Australian universities and other publicly funded research agencies, enabling the skills of the wider research community to be applied to the major national challenges targeted by the Flagships initiative. © Commonwealth of Australia 2009 All rights reserved. This work is copyright. Apart from any use as permitted under the Copyright Act 1968, no part may be reproduced by any process without prior written permission from the Commonwealth. Citation: Sharma, S. K., Benger, S. N., Fernandes, M. B., Webster, I. T. and Tanner, J. E. (2009) The CLLAMM Dynamic Habitat: Habitat mapping and dynamic modelling of species distributions. CSIRO: Water for a Healthy Country National Research Flagship and South Australian Research and Development Institute (Aquatic Sciences), Adelaide. DISCLAIMER CSIRO and the authors advise that the information contained in this publication comprises general statements based on scientific research. The reader is advised and needs to be aware that such information may be incomplete or unable to be used in any specific situation. No reliance or actions must therefore be made on that information without seeking prior expert professional, scientific and technical advice. To the extent permitted by law, CSIRO (including its employees, collaborators and consultants) excludes all liability to any person for any consequences, including but not limited to all losses, damages, costs, expenses and any other compensation, arising directly or indirectly from using this publication (in part or in whole) and any information or material contained in it. For more information about Water for a Healthy Country Flagship or the National Research Flagship Initiative visit http://www.csiro.au Printed in Adelaide SARDI Aquatic Sciences Publication Number F2008/001062-1 SARDI Research Report Series Number 336 Author(s): Sunil Sharma, Simon Benger, Milena Fernandes, Ian Webster and Jason Tanner Reviewers: Nathan Bott, Peter Fairweather, Rebecca Lester, Sasi Nayar, Bertram Ostendorf, Brad Page, Daniel Rogers, Simon Goldsworthy, Keith Rowling, Paul Van Ruth, Ian Overton and Kathryn Wiltshire Approved by: Qifeng Ye Signed: Date: 27 July 2009 Distribution: Public Domain Circulation: The CLLAMM Dynamic Habitat i Foreword The environmental assets of the Coorong, Lower Lakes and Murray Mouth (CLLAMM) region in South Australia are currently under threat as a result of ongoing changes in the hydrological regime of the River Murray, at the end of the Murray- Darling Basin. While a number of initiatives are underway to halt or reverse this environmental decline, rehabilitation efforts are hampered by the lack of knowledge about the links between flows and ecological responses in the system. The CLLAMM program is a collaborative research effort that aims to produce a decision-support framework for environmental flow management for the CLLAMM region. This involves research to understand the links between the key ecosystem drivers for the region (such as water level and salinity) and key ecological processes (generation of bird habitat, fish recruitment, etc). A second step involves the development of tools to predict how ecological communities will respond to manipulations of the “management levers” for environmental flows in the region. These levers include flow releases from upstream reservoirs, the Lower Lakes barrages, and the Upper South-East Drainage scheme, and dredging of the Murray Mouth. The framework aims to evaluate the environmental trade-offs for different scenarios of manipulation of management levers, as well as different future climate scenarios for the Murray-Darling Basin. One of the most challenging tasks in the development of the framework is predicting the response of ecological communities to future changes in environmental conditions in the CLLAMM region. The CLLAMMecology Research Cluster is a partnership between CSIRO, the University of Adelaide, Flinders University and SARDI Aquatic Sciences that is supported through CSIRO’s Flagship Collaboration Fund. CLLAMMecology brings together a range in skills in theoretical and applied ecology with the aim to produce a new generation of ecological response models for the CLLAMM region. This report is part of a series summarising the output from the CLLAMMecology Research Cluster. Previous reports and additional information about the program can be found at http://www.csiro.au/partnerships/CLLAMMecologyCluster.html The CLLAMM Dynamic Habitat ii Table of Contents Table of Contents.................................................................................................... iii Acknowledgements ................................................................................................ vi Executive Summary............................................................................................... vii 1. Introduction ....................................................................................................... 1 2. Habitat Mapping of the Coorong and Surrounds........................................... 3 2.1. Executive Summary ................................................................................................ 3 2.2. Introduction.............................................................................................................. 4 2.3. Reference sites for habitat mapping in the Coorong............................................... 5 2.4. Habitat classification scheme.................................................................................. 6 2.4.1 Habitat zone............................................................................................................. 6 2.4.2 Habitat category.................................................................................................. 7 2.4.3 Landform............................................................................................................. 7 2.4.4 Wetland system .................................................................................................. 7 2.4.5 Water regime ...................................................................................................... 8 2.4.6 Wetland type ....................................................................................................... 8 2.4.7 Habitat type....................................................................................................... 10 2.4.8 Salinity............................................................................................................... 10 2.4.9 Vegetation......................................................................................................... 11 2.4.10 Cover percent ............................................................................................... 11 2.4.11 Habitat condition........................................................................................... 11 2.4.12 Area .............................................................................................................. 12 2.5. Methods................................................................................................................. 13 2.5.1 Available datasets............................................................................................. 13 2.5.2 Habitat digitization and interpretation ............................................................... 18 2.5.3 Imagery classification........................................................................................ 18 2.5.4 Map validation and accuracy testing................................................................. 19 2.6. Results .................................................................................................................. 19 2.6.1 Habitat maps of the reference sites .................................................................. 19 2.6.2 Habitat classification ......................................................................................... 30 2.7. Discussion ............................................................................................................. 32 2.8. Summary and conclusions .................................................................................... 33 2.9. References ...........................................................................................................
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