“…between percent urban and percent agricultural land was generally low across all sites for each region (Pearson correlation coefficients: Australia [SEQ] r = −.23, Belgium [Flanders] r = −.74, France r = −.37, New Zealand r = .07, South Korea r = −.01, Sweden r = .31, United Kingdom [England] r = −.10, United States r = −.09).Using HydroBASINS, we also calculated the following environmental variables for each site: long-term average annual air temperature (°C) according to WorldClim(Hijmans, Cameron, Parra, Jones, & Jarvis, 2005), average elevation within subwatershed (m), modeled long-term average annual 'naturalized' discharge (m 3 /s) according to the global integrated water model WaterGap v2.2(Döll, Kaspar, & Lehner, 2003), and degree of flow regulation (%) calculated as the percent of the total annual discharge volume of the reach that can be withheld by all upstream reservoirs according to HydroSHEDS and Global Reservoir and Dam Database (https://www.hydro sheds.org/page/hydro atlas;Linke et al, 2019). The sites varied in long-term average annual air temperature (9.6 ± 4.0°C), average elevation within subwatershed (453.0 ± 491.0 m), modeled long-term average annual "naturalized" discharge (38.0 ± 54.4 m 3 /s), and degree of flow regulation at the subwatershed scale (15.4 ± 162.5%); thus representing a broad range of riverine types and sizes in temperate, subtropical, and boreal climate zones(Figure 1;…”