Table 1 Key WRD scenario combinations
From: Integrated assessment of river development on downstream marine fisheries and ecosystems
Properties of WRD scenarios | Median (90% range) of annual regional catch (t) difference and frequency of lost catch (%) (and catchment with greatest difference) | |||||||
|---|---|---|---|---|---|---|---|---|
WRD | Number of rivers affected | Dams (yield (Gl yr−1)) | Allocation amount (Gl yr−1) | Threshold for pumping (Mitchell) | Pump rate (Mitchell) | Common banana prawn (t) | Barramundi (t) | Giant mud crab (t) |
Base | None | None | 0 | – | – | Observed (since 1971): 1,580 t | Observed (since 1989): 329 t | Observed (since 1989): 108 t |
WRD 1 | 3 (Mitchell, Flinders, Gilbert) | 2 on Gilbert (498 Gl yr−1) | High (Mitchell: 2,000 Gl yr−1; Flinders: 400 Gl yr−1) | Low | Low | −363 t (−855 t; −168 t) Frequency (loss): 100% (Flinders) | −63 t (−117 t; −7 t) Frequency (loss): 92% (Gilbert) | −25 t (−79 t; 2 t) Frequency (loss): 88% (Flinders) |
WRD 2 | 3 (Mitchell, Flinders, Gilbert) | 1 on Gilbert (172 Gl yr−1) | Medium (Mitchell: 1,000 Gl yr−1; Flinders: 160 Gl yr−1) | High | High | −263 t (−662 t; −109 t) Frequency (loss): 100% (Flinders) | −34 t (−74 t; 1 t) Frequency (loss): 83% (Gilbert) | −19 t (−69 t; 2 t) Frequency (loss): 90% (Flinders) |
WRD 3 | 1 (Mitchell) | None | Medium (Mitchell: 1,000 Gl yr−1) | Low | High | −134 t (−303 t; −59 t) Frequency (loss): 98% (Mitchell) | 3 t (−22 t; 56 t) Frequency (loss): 79% (Mitchell) | 0 t (−1 t; 0.4 t) Frequency (loss): 35% (Mitchell) |
WRD 4 | 2 (Flinders, Gilbert) | 1 on Gilbert (172 Gl yr−1) | Medium (Flinders: 160 Gl yr−1) | NA | NA | −225 t (−603 t; −99 t) Frequency (loss): 100% (Flinders) | −28 t (−68 t; 6 t) Frequency (loss): 81% (Gilbert) | −20 t (−69 t; 2 t) Frequency (loss): 90% (Flinders) |
