Abstract:
:Ammonia is an important water quality variable, which in excess, can be detrimental to waterways and their ecosystems. In the Ecosystem Health Monitoring Program in South-east Queensland ammonia is monitored monthly, however, often more than 50% of the ammonia observations in Moreton Bay are below detection limit, making it difficult to draw useful inferences. In this paper a clipped Gaussian random field is used to spatially model and map the probability of detectable concentration of ammonia. The methodology is applied to the Moreton Bay samples collected in February 2005. The results suggest that for this month the oceanic impacted areas have higher probability of detectable ammonia concentration than the areas closer to the main sources of anthropogenic inputs.
journal_name
Environ Monit Assessjournal_title
Environmental monitoring and assessmentauthors
Toscas PJdoi
10.1007/s10661-007-9773-4subject
Has Abstractpub_date
2008-02-01 00:00:00pages
379-85issue
1-3eissn
0167-6369issn
1573-2959journal_volume
137pub_type
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