Farm A in Hashmi et al. (2002) was used to calibrate uptake for the modelled prawns, and the intent was to use Farm B to validate our model of uptake. The contaminants selected were lead, cadmium and copper. These contaminants were selected mainly because they were metals we were already considering to use in NWS-InVitro. Parameters were chosen for the uptake rates of the metals which gave rise to a profile comparable to that for the prawns taken from Farm A. The simulation was run for six years, during which time the contaminate output levels were held constant. Currents were held constant in hourly intervals, as were the plumes they advected and diffused. The simulation tracked the levels of contaminants in the water and in the prawns that passed through the region affected by the plume. A piecewise linear function was introduced to allow the rate of uptake to vary in a controlled way. With much validation, the model provides the best available representation of contaminant impacts on prawns in Nickol Bay. This facilitated relatively straightforward reproduction of the uptake of contaminants. Abstract extracted from detailed documentation
The time series of contaminant concentrations at each location were constructed using the contaminants inventory (NWSJEMS see Appendix B). During the historical years of the model runs actual recorded values were used. During the projected period alternative time series reflecting potential changes due to altered production levels were constructed. These alternative time series were put together by considering the increase in release during past production shifts (a non-linear function due to increasing efficiency and the introduction of new technologies) and applying corresponding increases in step with the 'painted' production scenarios.
The North West Shelf JEMS included development of explicit models of the interaction of industrial developments which produce contaminant plumes, with the fauna in the waters affected by the plumes. The specific sub-models used in simulating these interactions are described, and avenues for richer models which incorporate sublethal effects, are discussed in Section 10 of the companion operating model report by Fulton et al.(2006).
This dataset contains data from pollution monitoring in Jervis Bay, NSW. The data were obtained from various sites around Jervis Bay at different times between October 1988 and July 1991. Samples for trace metals from sediments were determined, together with grain size. Mercury in the tissues of Red morwong (Cheilodactylus fuscus), Oysters (Ostrea angasi), Mussels (Trichomya hirsuta) and heavy metals in the leaves of Posidonia australis and Zostera sp. were determined. Organochlorides and hydrocarbons from sediments, water column and biota were also determined. Tributyl tin experiments were conducted in tanks. The data are part of the Jervis Bay Marine Ecological Study. NB - As the database has been lost, the only data still available are those published in the JERVIS BAY BASELINE STUDIES Final Report.