Extended Data Fig. 7: Global trends in hydro-climatic variables, stress and hypoxia 1980-2019.
From: Climate change drives low dissolved oxygen and increased hypoxia rates in rivers worldwide
(a) Average trend in water temperature over the period 1980-2019. (b) Average trend in river discharge over the period 1980-2019. (c) Average trend in biochemical oxygen demand (BOD) concentration over the period 1980-2019. (d) Average absolute trend in the number of stress days (DO < 5 mg/l) over the period 1980-2019 using DynQual_Random Forest (e) Average absolute trend in the number of hypoxia days (DO < 3 mg/l) over the period 1980-2019 using DynQual_Random Forest. Grey denotes mean discharge < 10m3/s. Basemaps adapted from ref. 19 under a Creative Commons license CC BY 4.0.
