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Article << Previous     |     Next >>   Contents Vol 33(2)

Drivers of change in the Social-Ecological Systems of the Gwydir Wetlands and Macquarie Marshes in northern New South Wales, Australia

R. D. B. Whalley A E , J. N. Price B , M. J. Macdonald C D and P. J. Berney C

A Botany, University of New England, Armidale, NSW 2351, Australia.
B Institute of Ecology and Earth Sciences, University of Tartu, 51005, Estonia.
C Ecosystem Management, University of New England, Armidale, NSW 2351, Australia.
D Present address: Ecologia Environment, 1025 Wellington Street, West Perth, WA 6005, Australia.
E Corresponding author. Email: rwhalley@une.edu.au

The Rangeland Journal 33(2) 109-119 http://dx.doi.org/10.1071/RJ11002
Submitted: 18 January 2011  Accepted: 8 May 2011   Published: 22 June 2011


 
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Abstract

The Murray–Darling Basin is a Social-Ecological System (SES) of major importance to Australia and includes extensive wetland areas in the north-western parts of New South Wales. The Gwydir Wetlands and the Macquarie Marshes are the particular focus of this paper. These two wetland SES have undergone five successive adaptive cycles (phases) since they were first visited by Europeans in the early 19th century and the ecological, economic and social drivers initiating each transformation to a new cycle are described and analysed.

The arrival of the European settlers with their domestic livestock rapidly displaced the Indigenous SES and the wetlands were extensively grazed; during wet periods the livestock were moved out of the wetlands and moved back in as the water receded. More recent land-use changes resulted from the building of major dams to enable storage of water for use in irrigated agriculture. A consequence of dam construction and water use has been a reduction in the frequency and extent of flooding, which has allowed many parts of the wetlands to be continually grazed. Furthermore, as machinery capable of cultivating the very heavy textured soils became available, dryland cropping became a major enterprise in areas of the floodplain where the likelihood of flooding was reduced. With the reduction in flooding, these wetland sites have been seriously degraded. The final phase has seen the invasion by an exotic weed, lippia [Phyla canescens (Kunth) Greene], which is a perennial that grows mat-like between other species of plants and spreads to produce a virtually mono-specific stand. The domestic livestock carrying capacity of the land becomes more or less zero and the conservation value of the wetlands is also dramatically decreased. Therefore, we suggest that lippia should be classed as an ecosystem engineer that has caused the latest transformation of these wetland SES and suggest research directions to investigate how they can be managed to revert to a state in which lippia is no longer dominant.

Additional keywords: ecosystem engineer, grazing management, lippia, Phyla canescens, resilience, weed invasion.


References

ABARE (1980–1989). Australian Bureau of Agricultural and Resource Economics, Farm Survey Microfiche Set.

ABARE (1990–2009). Australian Bureau of Agricultural and Resource Economics online data. Available at: www.abare.gov.au/ame/agsurf/agsurf.asp (accessed 20 April 2011).

Auld, B. A., and Medd, R. W. (1987). ‘Weeds: An Illustrated Botanical Guide to Australian Weeds.’ (Inkata Press: Melbourne.)

Beadle, N. C. W. (1948). ‘The Vegetation and Pastures of Western New South Wales with Special Reference to Soil Erosion.’ (Thomas Henry Tennant, Government Printer: Sydney.)

Beadle, N. C. W., Evans, O. D., and Carolin, R. C. (1972). ‘Flora of the Sydney Region.’ (A. H. and A.W. Reed: Sydney.)

Bean, C. E. W. (1911). ‘The ‘Dreadnought’ of the Darling.’ (Alston Rivers Ltd: London.)

Berney, P. J. (2010). Gwydir Wetlands: Impacts of water regime and grazing on Floodplain Wetlands. PhD Thesis, University of New England, Armidale, Australia.

Clements, F. E. (1916). ‘Plant Succession: An Analysis of the Development of Vegetation.’ Publication 242. (Carnegie Institute: Washington, DC.)

Colloff, M. J., and Baldwin, D. S. (2010). Resilience of floodplain ecosystems in a semi-arid environment. The Rangeland Journal 32, 305–314.

Condon, R. W. (2003). ‘Out of the West – Historical Perspectives on the Western Division of NSW.’ (Lower Murray Darling and Western Catchment Management Committees: Wentworth.)

Crawford, P. (2008). ‘Lippia (Phyla canescens) Management: Challenges, Opportunities and Strategies.’ (National Lippia Working Group: Moree.)

Crooks, J. A. (2002). Characterizing ecosystem-level consequences of biological invasions: the role of ecosystem engineers. Oikos 97, 153–166.
CrossRef |

Cunningham, G. M., Mulham, W. E., Milthorpe, P. L., and Leigh, J. H. (1981). ‘Plants of western New South Wales.’ (NSW Government Printing Office: Sydney.)

Dyksterhuis, E. J. (1949). Condition and management of rangeland based on quantitative ecology. Journal of Range Management 2, 104–115.
CrossRef |

Earl, J. M. (2003). ‘The Distribution and Impact of Lippia (Phyla canescens) in the Murray–Darling System.’ Report for the Lippia Working Group. (Agricultural Information and Monitoring Services: Guyra.)

Fazey, I., Proust, K., Newell, B., Johnson, B., and Fazey, J. A. (2006). Eliciting the implicit knowledge and perceptions of on-ground conservation managers of the Macquarie Marshes. Ecology and Society 11 (1). Available at: www.ecologyandsociety.org/vol11/iss1/art25/ (accessed 22 December 2010).

Fitzhardinge, G. (2001). The Western Land Act Post 2000. The Rangeland Journal 23, 25–32.
CrossRef |

Harden, G. J. (1992). ‘Flora of New South Wales. Vol. 3.’ (New South Wales University Press: Kensington.)

Hogendyk, G. (2007). ‘The Macquarie Marshes: An Ecological History.’ Occasional Paper. (Institute of Public Affairs: Melbourne.)

Holling, C. S., and Gunderson, L. H. (2002). Resilience and adaptive cycles. In ‘Panarchy: Understanding Transformations in Human and Natural Systems’. (Eds L. H. Gunderson and C. S. Holling.) pp. 25–62. (Island Press: Washington, DC.)

Johnson, R. (2001). ‘The Search for the Inland Sea.’ (Melbourne University Press: Melbourne.)

Jones, C. G., Lawton, J. H., and Shachak, M. (1994). Organisms as ecosystem engineers. Oikos 69, 373–386.
CrossRef |

Jones, C. G., Lawton, J. H., and Shachak, M. (1997). Positive and negative effects of organisms as physical ecosystem engineers. Ecology 78, 1946–1957.
CrossRef |

Kingsford, R. T. (2000). Ecological impacts of dams, water diversions and river management on floodplain wetlands in Australia. Austral Ecology 25, 109–127.
CrossRef |

Livestock and Wool Production (1971–1979). ‘Livestock and Wool Production in Local Government Areas.’ Statistical Agricultural Areas and Statistical Divisions. (Australian Bureau of Statistics, NSW Office: Sydney.)

Macdonald, M. J. (2008). Ecology of Phyla canescens (Verbenaceae) in Australia. PhD Thesis, University of New England, Armidale, NSW, Australia.

Macdonald, M. J., Whalley, R. D. B., Sindel, B. M., Julien, M. H., and Duggin, J. A. (2006a). Germination response to temperature of Phyla canescens (Lippia). In ‘Managing Weeds in a Changing Climate. Proceedings of the 15th Australian Weeds Conference’. (Eds C. Preston, J. H. Watts and N. D. Crossman.) pp. 872–875. (Weed Management Society of South Australia: Adelaide.)

Macdonald, M. J., Whalley, R. D. B., Sindel, B. M., Julien, M. H., and Duggin, J. A. (2006b). Flood induced recruitment of lippia (Phyla canescens). In ‘Waging War on Weeds: Battle Plans and Winning Strategies. Proceedings of the 21st Annual Conference of the Grassland Society of New South Wales’. (Eds B. Hackney, K. Bailes, J. Plitz and H. Burns.) pp. 135–136. (The Grassland Society of New South Wales: Orange.)

Mawhinney, W. A. (2003). Restoring biodiversity in the Gwydir Wetlands through environmental flows. Water Science and Technology 48, 73–81.
| CAS |

McCosker, R. (1994). Lippia (Phyla nodiflora): an invasive plant of floodplain ecosystems in the Murray–Darling Basin. A report on the distribution and ecology of lippia in the lower Gwydir and the Murray–Darling Basin prepared for the Gingham Watercourse Landcare Group.

Mudie, I. (1961). ‘Riverboats.’ (Rigby: Adelaide.)

New South Wales (1901). Western Lands Act 1901. New South Wales Consolidated Acts. Available at: www.austlii.edu.au/au/legis/nsw/consol_act/wla1901163/ (accessed 13 May 2010).

Noble, I. R. (1986). The dynamics of range ecosystems. In ‘Rangelands: A Resource under Siege’. (Eds P. J. Joss, P. W. Lynch and O. B. Williams.) pp. 3–5. (Australian Academy of Science: Canberra.)

NSW DECCW (2010). ‘Gwydir Wetlands Adaptive Environmental Management Plan.’ (NSW Department of Environment, Climate Change and Water: Sydney.)

NSW Legislative Assembly (1901). ‘Royal Commission into the Condition of the Crown Tenants of the Western Division of New South Wales.’ Votes and Proceedings, Vol. 4. (Government Printer: Sydney.)

NSW Rural Industries (1956–1971). ‘New South Wales Statistical Registers: Rural Industries and Settlements and Meteorology.’ (NSW Government Printer: Sydney.)

NSW Statistical Registers (1940–1955). ‘New South Wales Statistical Registers.’ (NSW Government Printer: Sydney.)

Pittman, E. F. (1914). Artesian water. In ‘Handbook for New South Wales’. British Association for the Advancement of Science. pp. 542–549. (Edward Lee and Company: Sydney.)

Price, J. N., Gross, C. L., and Whalley, R. D. B. (2010a). Prolonged summer flooding switched dominance from the invasive weed Lippia (Phyla canescens) to native species in one small ephemeral wetland. Ecological Management & Restoration 11, 61–63.
CrossRef |

Price, J. N., Wright, B. D., Gross, C. L., and Whalley, W. R. D. B. (2010b). Comparison of seedling emergence and seed extraction techniques for estimating the composition of soil seed banks. Methods in Ecology and Evolution 1, 151–157.
CrossRef |

Price, J. N., Macdonald, M. J., Gross, C. L., Whalley, R. D. B., and Simpson, I. H. (2011a). Vegetative reproduction facilitates early invasion of Phyla canescens in a semi-arid floodplain. Biological Invasions 13, 285–289.
CrossRef |

Price, J. N., Berney, P., Ryder, D., Whalley, R. D. B., and Gross, C. L. (2011b). Disturbance governs dominance of an invasive forb in a temporary wetland. Oecologia , (in press).

Ramsar Convention (1971). Available at: www.ramsar.org/cda/en/ramsarhome/main/ramsar/1%5e7715_4000_0__ (accessed 11 May 2010).

Savory, A., and Butterfield, J. (1999). ‘Holistic management: A New Framework for Decision Making.’ (Island Press: Washington, DC.)

Sinden, J. A. (2004). Do the public gains from vegetation protection in North-Western New South Wales exceed the landholders’ loss of land value? The Rangeland Journal 26, 204–224.
CrossRef |

Sturt, C. (1833). ‘Two Expeditions into the Interior of Southern Australia during the years 1828, 1829, 1830 and 1831. Vol. 1.’ Facsimile edition (1982) of the original. (Doubleday Australia: Lane Cove.)

Thoms, M. C., and Sheldon, F. (2000). Lowland rivers: an Australian introduction. Regulated Rivers: Research and Management 16, 375–383.
CrossRef |

Walker, K. F., Sheldon, F., and Puckridge, J. T. (1995). A perspective on dryland river ecosystems. Regulated Rivers: Research and Management 11, 85–104.
CrossRef |

Walker, B., Holling, C. S., Carpenter, S. R., and Kinzia, A. (2004). Resilience, adaptability, and transformability in Social-Ecological Systems. Ecology and Society 9, (2). Available at: www.ecologyandsociety.org/vol9/iss2/art5/ (accessed 14 January 2010).

Walker, B. H., Abel, N., Anderies, J. M., and Ryan, P. (2009). Resilience, adaptability, and transformability in the Goulburn-Broken catchment, Australia. Ecology and Society 14, (1). Available at: www.ecologyandsociety.org/vol14/iss1/art12/ (accessed 14 July 2010).

Walsh, G. P. (1993). ‘Pioneering Days: People and Innovations in Australia’s Rural Past.’ (Allen and Unwin: St. Leonards.)

Westoby, M., Walker, B., and Noy-Meir, I. (1989). Opportunistic management for rangelands not at equilibrium. Journal of Range Management 42, 266–274.
CrossRef |

Wright, J. P., and Jones, C. G. (2006). The concept of organisms as ecosystem engineers ten years on: progress, limitations and challenges. Bioscience 56, 203–209.
CrossRef |


   
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