“…However, the emphasis is on intrinsic processes with scant reference to the abundant body of literature showing the significance of external effects on fluvial evolution, such as climate (Vandenberghe, 1995(Vandenberghe, , 2002(Vandenberghe, , 2003(Vandenberghe, , 2008(Vandenberghe, , 2015Antoine, 1994;Bridgland, 1994Bridgland, , 2000Maddy et al, 2000Maddy et al, , 2001Starkel, 2003;Cordier et al, 2006Cordier et al, , 2014) and tectonic and/or crustal processes (Veldkamp and Van den Berg, 1993;Antoine, 1994;Van den Berg, 1994;Bridgland, 1994Bridgland, , 2000Maddy, 1997;Antoine et al, 2000;Westaway et al, 2003Westaway et al, , 2006Westaway et al, , 2009bMather and Hartley, 2006;Stokes et al, 2008;Bridgland and Westaway, 2008a, b; see also Demoulin et al, this issue). Although anthropogenic impact on fluvial geomorphological processes is mentioned in those two papers, very little of the work cited includes pre-modern timescales (e.g.…”