Figure 1.
Map of the lower Indus River system.
Rivers and barrages are named, and each river section is numbered and coloured according to whether river dolphins are extant, or the approximate date that they were extirpated (see Table A1 for details).
Figure 2.
Aerial photograph of Sukkur Barrage.
Image shows the seven canals diverting water out of the river, and demonstrates the dramatically reduced flows downstream (river flow direction right to left).
Figure 3.
Significant relationships retained in GLM models of the causes of the spatial and temporal pattern of Indus dolphin decline.
The figure demonstrates the probability that an Indus dolphin subpopulation is extant according to A) proximity to the edge of the former range and B) median dry season river discharge, and the relationship between the number of years since a dolphin was sighted and C) distance from the historical distributional limit, and D) median dry season river discharge.
Table 1.
Summary of spatial range decline model output.
Table 2.
Summary of temporal range decline model outputs.