Estimating annual generation rates of total P and total N for different land uses in Tasmania, Australia

Water quality issues have become increasingly important to Australian catchment stakeholders. As extensive nutrient sampling and modelling expertise are often absent or unattainable, simple unit-area models like Catchment Management Support System (CMSS) remain an attractive option for informing wat...

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Bibliographic Details
Published in:Journal of environmental management 2011-06, Vol.92 (6), p.1609-1617
Main Authors: Broad, S.T., Corkrey, R.
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Applied ecology
Bayes Theorem
Bayesian analysis
Bayesian model
Biological and medical sciences
Catchment Management Support System (CMSS)
Catchments
Conservation, protection and management of environment and wildlife
Dairy farms
Dairy pastures
Dairying - methods
Decision making
Environmental management
Estimation
Freshwater
Fundamental and applied biological sciences. Psychology
General aspects
Management
Modelling
Models, Theoretical
Nitrogen
Nitrogen - analysis
Nutrients
Pastures
Phosphorus - analysis
Phosphorus content
Rivers
Sampling
Tasmania
Water management
Water Pollutants, Chemical - analysis
Water pollution
Water quality
Water Supply - standards
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Summary:Water quality issues have become increasingly important to Australian catchment stakeholders. As extensive nutrient sampling and modelling expertise are often absent or unattainable, simple unit-area models like Catchment Management Support System (CMSS) remain an attractive option for informing water quality management decisions. The selection of nutrient generation rates for use in CMSS is often an arbitrary assignment based on limited literature sources or expert opinion. Using a Bayesian model to estimate nutrient generation rates for the region of Tasmania, Australia, improved the rigor of CMSS modelling and in the process highlighted that dairy pastures were the most significant contributor of total phosphorus and total nitrogen loads to Tasmanian rivers.
ISSN:0301-4797
1095-8630
DOI:10.1016/j.jenvman.2011.01.023