2016-02-02 P&O Committee - Item 3 - Attachment 4 - Mary River Environmental Values and Water Quality Objectives

            Mary River environmental values and water quality objectives




                  Table 7 Aquaculture EV: Water quality objectives for optimal growth of particular marine species
                                                                                                     Kuruma
                     Water parameter           Barramundi                   Tiger prawn               prawn
                                         Hatchery       Grow out       Hatchery      Grow out       Grow out
                  Dissolved oxygen      Saturation     >4.0mg/L        >4.0mg/L      >3.5mg/L       >4.0mg/L
                                           28–30
                                0                        28–30
                  Temperature C        optimum 25–                                     26–32            24
                                                        optimum
                                         31 range
                  pH                        ~8             ~8             ~8          7.5–8.5        7.5–8.5
                  Ammonia (TAN,
                  total ammonia-                     0.1–0.5 mg/L
                  nitrogen)
                  Ammonia (NH3, un-
                                        <0.1mg/L       <0.1mg/L        <0.1mg/L      <0.1mg/L       <0.1mg/L
                  ionized form)
                  Nitrate (NO3)         <1.0mg/L       <1.0mg/L        <1.0mg/L      <1.0mg/L       <1.0mg/L
                  Nitrite (NO2)         <0.2mg/L        <20mg/L        <0.2mg/L      <0.2mg/L       <0.2mg/L
                                                                                     10–25ppt       30–35 ppt
                  Salinity              28–31ppt        0–35ppt
                                                                                     optimum         optimum
                                                     105–125mg/L
                  Alkalinity
                                                         CaCO3
                                                                                     30–40cm        30–40cm
                  Clarity
                                                                                    Secchi disk    Secchi disk
                  Hydrogen sulphide                    <0.3mg/L
                  Iron                                 <0.02mg/L                     <1.0mg/L
                  Spawning                           28–32 *strain
                                                       dependent                      27–32
                  temperature

                  Source: Department of Primary Industries and Fisheries - Water Quality in Aquaculture—DPI Notes April 2004.




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Document Set ID: 20002123
Version: 1, Version Date: 21/12/2015