Fertilizer research

, Volume 36, Issue 2, pp 95–103 | Cite as

Fertilizers and eutrophication in southwestern Australia: Setting the scene

  • E. P. Hodgkin
  • B. H. Hamilton
Article

Abstract

An excess of plant nutrients has caused serious eutrophication in aquatic ecosystems of southwestern Australia manifested by excessive growth and accumulation of green and bluegreen algae. Phosphorus is generally the limiting nutrient for algal growth and phosphatic fertilizers applied to nutrient-deficient, leaching, sandy soils are the main source of P, supplemented by rural industry point sources. Nitrogen is the limiting nutrient in marine embayments with little drainage from the land. Measures to reduce the load of P delivered to drainage include basing fertilizer application rates on soil testing for P and the use of less soluble P fertilizers. Catchment management plans are being implemented with community involvement to reduce P loads and maintain agricultural production. This introductory paper reviews the history of eutrophication in southwestern Australia and of studies into its causes, principally in the large Peel-Harvey estuary. It briefly summarises other papers in this special issue concerned with different aspects of the problem: how to fertilize the land without causing eutrophication.

Key words

eutrophication phosphorus fertilizer Peel-Harvey estuary algal blooms 

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References

  1. 1.
    Atkins RP, Deeley DM and McAlpine KW (1993) Managing the aquatic environment. Fert Res 36: 171–175 (this issue)Google Scholar
  2. 2.
    Cambridge ML, Chiffings AW, Brittan C, Moore L and McComb AJ (1986) The loss of seagrass in Cockburn Sound, Western Australia. II. Possible causes of seagrass decline. Aquat Bot 24: 269–285Google Scholar
  3. 3.
    Chambers JM, Wrigley TJ and McComb A (1993) The potential use of wetlands to reduce phosphorus export from agricultural catchments. Fert Res 36: 157–164 (this issue)Google Scholar
  4. 4.
    EPA (1992) Draft Environmental Protection (Peel-Harvey Estuarine System) Policy 1992. Environmental Protection Authority, Perth Western AustraliaGoogle Scholar
  5. 5.
    George PR and Bradby K (1993) The Peel-Harvey catchment management program. Fert Res 36: 185–192 (this issue)Google Scholar
  6. 6.
    Hodgkin EP, Birch PB, Black RE and Hillman K (1985) The Peel-Harvey estuarine system, proposals for management. Department of Conservation and Environment, Perth Western Australia. Report No 14Google Scholar
  7. 7.
    Hodgkin EP, Birch PB, Black RE and Humphries RB (1980) The Peel-Harvey Estuarine System Study (1976–1980) Department of Conservation and Environment, Perth Western Australia. Report No 9Google Scholar
  8. 8.
    Hodgkin EP and Clark R (1988) Beaufort Inlet and Gordon Inlet. Environmental Protection Authority, Perth Western Australia. Estuarine Studies Series No. 4Google Scholar
  9. 9.
    Hodgkin EP and Vicker E (1987) A history of algal pollution in the Swan River. In: Jacob John (ed) The Swan River Estuary Ecology and Management, pp 65–70. Curtin University Environmental Studies Group, Bentley Western Australia. Report No 1Google Scholar
  10. 10.
    Kinhill Engineers (1988) Peel Inlet and Harvey Estuary Environmental Review and Management Program, Stage 2. Kinhill Engineers, Perth, Western AustraliaGoogle Scholar
  11. 11.
    Lukatelich RJ, Schofield NJ, and McComb AJ (1987) Nutrient loading and macrophyte growth in Wilson Inlet, a bar-built southwestern Australian estuary. Estuarine Coastal and Shelf Sci 24: 141–165Google Scholar
  12. 12.
    McAlpine KW, Spice JF and Humphries R (1989) The Environmental condition of the Vasse Wonnerup wetland system and a discussion of management options. Environmental Protection Authority WA Technical Series No 31Google Scholar
  13. 13.
    McComb AJ and Davis JA (1993) Eutrophic waters of southwestern Australia. Fert Res 36: 105–114 (this issue)Google Scholar
  14. 14.
    Mattinson BC and Morrison DA (1985) A cost benfit study of alternative strategies for reducing the algal nuisance in the Peel-Harvey estuary. In Hodgkin EP (ed) Peel-Harvey Eastuarine Systen Study: Management of the Estuary. Department of Conservation and Environment, Western Australia. Bulletin 195Google Scholar
  15. 15.
    New South Wales Blue-Green Algae Task Force (1992) Final Report. Department of Water Resources. Parramata NSWGoogle Scholar
  16. 16.
    Weaver DM and Prout AL (1993) Changing farm practice to meet environmental objectives of nutrient loss to Oyster Harbour. Fert Res 36: 177–184 (this issue)Google Scholar
  17. 17.
    Ritchie GSP and Weaver DM (1993) Phosphorus retention and release from sandy soils of the Peel-Harvey catchment. Fert Res 36: 115–122 (this issue)Google Scholar
  18. 18.
    Ruprecht JK and George PR (1993) Hydrology of the Peel-Harvey coastal catchment. Fert Res 36: 127–133 (this issue)Google Scholar
  19. 19.
    Simpson CJ and Masini RJ, eds. (1990) Albany Harbours Environmental Study (1988–1989). Environmental Protection Authority, Perth Western Australia. Bulletin 412Google Scholar
  20. 20.
    Ward SC and Summers RN (1993) Modifying sandy soils with the fine residue from bauxite refining. Fert Res 36: 151–156 (this issue)Google Scholar
  21. 21.
    Weaver DM (1993) Managing nutrient losses from rural point sources and urban environments. Fert Res 36: 165–170 (this issue)Google Scholar
  22. 22.
    Yeates JS (1993) Soils and fertilizer use in southwestern Australia. Fert Res 36: 123–125 (this issue)Google Scholar
  23. 23.
    Yeates JS (1993) Changing fertilizer practices Fert Res 36: 135–140 (this issue)Google Scholar
  24. 24.
    Yeates JS and Clarke MF (1993) Developing alternatives to phosphate fertilizers of high water solubility. Fert Res 36: 141–150 (this issue)Google Scholar

Copyright information

© Kluwer Academic Publishers 1993

Authors and Affiliations

  • E. P. Hodgkin
    • 1
  • B. H. Hamilton
    • 2
  1. 1.Environmental Protection AuthorityPerthAustralia
  2. 2.Waterways CommissionPerthAustralia

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