Ecosystems of the East Marine Region
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Ecosystems of the East Marine Region CSIRO: David Brewer, Tim Skewes and Jock Young Hydrobiology: Adrian Flynn, Jonathan Alawo, James Shelley, Ben Pearson, Jamie Corfield Other contributors: Cathy Bulman, Lesley Clementson, Scott Condie, Rudi Kloser, Peter Last, Vincent Lyne, Ken Ridgeway, Alan Williams Prepared for: Department of Environment and Water Resources OCTOBER 2007 ECOSYSTEMS OF THE EAST MARINE REGION Published by CSIRO Marine Research This publication should be cited as: Brewer, D.T., Flynn, A., Skewes, T.D., Corfield, J., Pearson, B., Alowa, J., and Young, J. W. (2007). Ecosystems of the East Marine Planning Region. Report to Department of Environment and Water Resources. CSIRO, Cleveland. 150 pg. DISCLAIMER The authors do no warrant that the information in this book is free from errors or omissions. The authors do no accept any form of liability, be it contractual, tortuous or otherwise, for the contents of this book or for any consequences arising from its use or any reliance placed upon it. The information, options and advice contained in this book may not relate to, or be relevant to, a reader’s particular circumstances. Opinions expressed by the authors are the individual options of those persons and are not necessarily those of the publisher or research provider. Page i ECOSYSTEMS OF THE EAST MARINE REGION Enquiries should be addressed to: David Brewer PO Box 120 Cleveland QLD 4163 Ph: 07 3826 7246 [email protected] Report delivered to: Rob McKelleher Assistant Director East Marine Planning Section Marine and Biodiversity Division The Department of Environment and Water Resources 4th Floor, 1 King Edward Terrace Parks, ACT 2600 Important Notice © Copyright The Department of Environment and Water Resources (‘DEW”), Commonwealth Scientific and Industrial Research Organisation (‘CSIRO’) Australia, Hydrobiology Pty Ltd (‘Hydrobiology’), 2007 All rights are reserved and no part of this publication covered by copyright may be reproduced or copied in any form or by any means except with the written permission of CSIRO. The results and analyses contained in this Report are based on a number of technical, circumstantial or otherwise specified assumptions and parameters. The user must make its own assessment of the suitability for its use of the information or material contained in or generated from the Report. To the extent permitted by law, CSIRO excludes all liability to any party for expenses, losses, damages and costs arising directly or indirectly from using this Report. Use of this Report The use of this Report is subject to the terms on which it was prepared by CSIRO and Hydrobiology. In particular, the Report may only be used for the following purposes. this Report may be copied for distribution within the Client’s organisation; the information in this Report may be used by the entity for which it was prepared (“the Client”), or by the Client’s contractors and agents, for the Client’s internal business operations (but not licensing to third parties); extracts of the Report distributed for these purposes must clearly note that the extract is part of a larger Report prepared by CSIRO for the Client. The Report must not be used as a means of endorsement without the prior written consent of CSIRO and Hydrobiology. Page ii ECOSYSTEMS OF THE EAST MARINE REGION Table of Contents 1. Executive summary................................................................................................................... 1 2. Glossary of Terms..................................................................................................................... 5 3. Introduction............................................................................................................................... 7 4. Objectives .................................................................................................................................. 7 5. Approach to describing eco-physical systems ........................................................................ 9 5.1 Method, justification and context................................................................................................ 9 5.2 Conceptual eco-physical system models................................................................................... 10 6. Description of the region and it’s major ecological sub-systems ........................................ 15 6.1 General description of East Marine Region ............................................................................. 15 6.1.1 Oceanographic currents ..................................................................................................... 15 6.1.2 Influence on primary productivity ..................................................................................... 23 6.1.3 Winds................................................................................................................................. 27 6.1.4 Geomorphology ................................................................................................................. 28 6.2 Major eco-physical sub-regions ............................................................................................... 29 6.3 Comparison with IMCRA provincial regionalisation............................................................... 33 7. Description of Sub-Regions.................................................................................................... 35 7.1 Cape Province Sub-region (1a) ................................................................................................ 35 7.1.1 Description......................................................................................................................... 35 7.1.2 Important Drivers and Ecological Features ....................................................................... 37 7.1.3 Productivity flows..............................................................................................................39 7.1.4 Connectivity with other Sub-regions ................................................................................. 39 7.1.5 Interactions with important species and habitats ............................................................... 40 7.1.6 Vulnerability to impacts and change.................................................................................. 40 7.1.7 Information gaps................................................................................................................40 7.2 Coral Sea Abyssal Basin Sub-region (1b) ................................................................................ 41 7.2.1 Description......................................................................................................................... 41 7.2.2 Important Drivers and Ecological Features ....................................................................... 42 7.2.3 Productivity flows..............................................................................................................44 7.2.4 Connectivity with other Sub-systems ................................................................................ 45 7.2.5 Interactions with important species and habitats ............................................................... 46 7.2.6 Vulnerability to impacts and change.................................................................................. 46 7.2.7 Information gaps................................................................................................................46 7.3 Queensland Plateau Sub-region (1c)........................................................................................ 47 7.3.1 Description......................................................................................................................... 47 7.3.2 Important Drivers and Ecological Features ....................................................................... 49 7.3.3 Productivity flows..............................................................................................................52 7.3.4 Connectivity with other Sub-regions ................................................................................. 52 7.3.5 Interactions with important species and habitats ............................................................... 53 7.3.6 Vulnerability to impacts and change.................................................................................. 54 7.3.7 Information gaps................................................................................................................54 7.4 Marion Plateau Sub-region (1d)............................................................................................... 55 7.4.1 Description......................................................................................................................... 55 7.4.2 Important Drivers and Ecological Features ....................................................................... 57 7.4.3 Productivity flows..............................................................................................................58 7.4.4 Connectivity with other Sub-regions ................................................................................. 59 Page iii ECOSYSTEMS OF THE EAST MARINE REGION 7.4.5 Interactions with important species and habitats................................................................ 60 7.4.6 Vulnerability to impacts and change.................................................................................. 60 7.4.7 Information gaps ................................................................................................................60