“…Reductions in salinity can also reduce the efficiency of the ampullae of Lorenzini, a sensory organ found in elasmobranchs that detect bioelectric currents given off by prey (Rigg, Peverell, Hearndon, & Seymour, 2009). Morphological and/or behavioural differences between species could permit sympatric elasmobranchs to specialize on different prey items (Kinney, Hussey, Fisk, Tobin, & Simpfendorfer, 2011; Yick, Tracey, & White, 2011), while moving in response to environmental change and/or separating along environmental gradients may allow sympatric species to partition resources on both temporal and spatial scales thereby negating competitive interactions associated with resource use overlap (Every, Fulton, Pethybridge, Kyne, & Crook, 2019; Matich & Heithaus, 2014; Ross, 1986). By linking physiological approaches with observations of how animal movements and local environmental parameters change in space and time, it may be possible to reveal mechanistic insights into how environmental variation drives patterns of habitat use, river connectivity and community structure in elasmobranch nursery habitats.…”