Relationships between land use and nutrient concentrations in streams draining a ‘wet-tropics’ catchment in northern Australia
A. Mitchell A E , J. Reghenzani B , J. Faithful A C , M. Furnas D and J. Brodie AA Australian Centre for Tropical Freshwater Research, James Cook University, Townsville, Qld 4810, Australia.
B Terrain Natural Resource Management, PO Box 1293, Ingham, Qld 4850, Australia.
C Present address: Golder Associates, Calgary, Alberta T2P 3T1, Canada.
D Australian Institute of Marine Science, PMB No. 3, M.C., Townsville, Qld 4810, Australia.
E Corresponding author. Email: alan.mitchell@jcu.edu.au
Marine and Freshwater Research 60(11) 1097-1108 https://doi.org/10.1071/MF08330
Submitted: 1 December 2008 Accepted: 15 September 2009 Published: 17 November 2009
Abstract
Differences in stream nutrient concentrations typically reflect upstream differences in land use. In particular, nitrate concentrations are greatly increased by losses from nitrogen (N) fertiliser applied to areas of intensive cropping. In the present study, a relationship between the area of such land use and the nitrate concentrations in the receiving streams was predicted. This relationship was tested using several data sets from the Tully basin, in the wet-tropics bioregion of north Queensland, Australia. The proportions of fertiliser-additive land use (FALU), mostly sugarcane and bananas, were correlated with the concentrations of nutrients in streams that drain these land uses. The data compared included two long-term sampling studies in the Tully River catchment and more recent, broader catchment sampling and plot-scale studies in this region. A strong relationship was shown for nitrate, but weaker relationships were observed for other N-nutrient and P-nutrient forms. Comparisons were made with contemporary and historical land-use changes in the Tully basin. The strong relationship of FALU with nitrate provides evidence that the nitrate exports from this catchment are largely derived from fertiliser use. This relationship can be used to derive nitrate run-off coefficients for fertilised land use in catchment models or to monitor changes following management to reduce fertiliser usage.
Additional keywords: fertiliser-additive land use, key pollutants, nitrate, north Queensland, Tully basin, Tully River.
Acknowledgements
We wish to thank AIMS and BSES for their enduring vision to enable and continue this long sampling program, and DERM for their continuing, helpful provision of gauging data over many years. We especially thank the BSES and ACTFR staff members and Joelle Prange for collecting and processing samples, under sometimes very difficult weather conditions. We further thank AIMS staff of the Analytical Services Group and the staff of the ACTFR laboratory for analysing the very many water samples. We also thank Greg Nelson-White and Ines Lehmann (Internship) for their help in the preparation of the GIS maps. We acknowledge support from the Coastal Catchment Initiative, funded by the Department of the Environment, Water, Heritage and the Arts, through Terrain NRM. Finally, many thanks are given to Frederieke Kroon for her helpful advice and editing suggestions.
Armour, J. , Hateley, L. R. , and Pitt, G. L. (2009). Catchment modelling of sediment, nitrogen and phosphorus nutrient loads with SedNet/ANNEX in the Tully–Murray basin. Marine and Freshwater Research 60, 1091–1096.
Bainbridge, Z. T. , Brodie, J. E. , Faithful, J. W. , Sydes, D. A. , and Lewis, S. E. (2009). Identifying the land-based sources of suspended sediments, nutrients and pesticides discharged to the Great Barrier Reef from the Tully–Murray Basin, Queensland, Australia. Marine and Freshwater Research 60, 1081–1090.
Brodie, J. E. , De’ath, G. , Devlin, M. , Furnas, M. , and Wright, M. (2007a). Spatial and temporal patterns of near-surface chlorophyll a in the Great Barrier Reef lagoon. Marine and Freshwater Research 58, 342–353.
| Crossref | GoogleScholarGoogle Scholar | CAS |
Bubb, K. A. , Yu, B. , Cakurs, U. , and Costantini, A. (2000). Impacts of site preparation techniques on runoff, soil and nitrogen losses during the establishment phase in hoop pine plantations of southeast Queensland. Australian Forestry 63, 239–245.
Faithful, J. , and Finlayson, W. (2005). Water quality assessment for sustainable agriculture in the wet tropics – a community-assisted approach. Marine Pollution Bulletin 51, 99–112.
| Crossref | GoogleScholarGoogle Scholar | CAS | PubMed |
Filoso, S. , Martinelli, L. A. , Williams, M. R. , Lara, L. B. , Krusche, A. , Ballester, M. V. , Victoria, R. , and de Camargo, P. B. (2004). Land use and nitrogen export in the Piracicaba River basin, southeast Brazil. Biogeochemistry 65, 275–294.
| Crossref | GoogleScholarGoogle Scholar |
Harris, G. P. (2001). Biogeochemistry of nitrogen and phosphorus in Australian catchments, rivers and estuaries: effects of land use and flow regulation and comparisons with global patterns. Marine and Freshwater Research 52, 139–149.
| Crossref | GoogleScholarGoogle Scholar | CAS |
Lal, R. (1996). Deforestation and land-use effects on soil degradation and rehabilitation in western Nigeria. III. Runoff, soil erosion and nutrient loss. Land Degradation and Development 7, 99–119.
| Crossref | GoogleScholarGoogle Scholar |
Randall, G. W. , and Mulla, D. J. (2001). Nitrate nitrogen in surface waters as influenced by climatic conditions and agricultural practices. Journal of Environmental Quality 30, 337–344.
| CAS | PubMed |
Stewart, L. K. , Charlesworth, P. B. , Bristow, K. L. , and Thorburn, P. J. (2006). Estimating deep drainage and nitrate leaching from the root zone under sugarcane using APSIM-SWIM. Agricultural Water Management 81, 315–334.
| Crossref | GoogleScholarGoogle Scholar |
Tilman, D. (1999). Global environmental impacts of agricultural expansion: the need for sustainable and efficient practices. Proceedings of the National Academy of Sciences, USA 96, 5995–6000.
| Crossref | GoogleScholarGoogle Scholar | CAS |
Wallace, J. , Stewart, L. , Hawdon, A. , Keen, R. , Karim, F. , and Kemei, J. (2009). Flood water quality and marine sediment and nutrient loads from the Tully and Murray catchments in north Queensland, Australia. Marine and Freshwater Research 60, 1123–1131.
Walling, D. E. (1999). Linking land use, erosion and sediment yields in river basins. Hydrobiologia 410, 223–240.
| Crossref | GoogleScholarGoogle Scholar |
Webb, B. W. , and Walling, D. E. (1985). Nitrate behaviour in streamflow from a grassland catchment in Devon, UK. Water Research 19, 1005–1016.
| Crossref | GoogleScholarGoogle Scholar | CAS |
Weier, K. L. (1994). Nitrogen use and losses in agriculture in subtropical Australia. Fertilizer Research 39, 245–257.
| Crossref | GoogleScholarGoogle Scholar |
Weier, K. L. (1999). The quality of groundwater beneath Australian sugarcane fields. Australian Sugarcane 3, 26–27.
Wickham, J. D. , and Wade, T. G. (2002). Watershed level risk of nitrogen and phosphorus export. Computers and Electronics in Agriculture 37, 15–24.
| Crossref | GoogleScholarGoogle Scholar |
Young, W. J. , Marston, F. M. , and Davis, J. R. (1996). Nutrient exports and land use in Australian catchments. Journal of Environmental Management 47, 165–183.
| Crossref | GoogleScholarGoogle Scholar |