Fig. 3: Methane concentrations and water–air fluxes in study estuaries grouped by disturbance classes within each estuary type.
From: Low methane emissions from Australian estuaries influenced by geomorphology and disturbance
Both CH4 concentrations (row 1) and fluxes (row 2) are averaged per minute across low to very high disturbance groups (light to dark colours)) in estuary type: a lagoons (blue; n: low = 214, moderate = 815, high = 1312, and very high = 1448), b small deltas (green; n: high = 1777 and very high = 1845), and c tidal systems (yellow; n: low = 1582, moderate = 2374, high = 588, and very high = 1176). Each graph includes the mean (red asterisk), median (red bar), 1st and 3rd quartiles (box limits), and the furthest minimum and maximum values (whiskers) that fall within 1.5× the interquartile range. Outliers have been excluded from the graphs. The letters above the plots signify statistical differences between groups. Dotted lines along the y-axis represent net-zero water–air CH4 flux. Plot data can be found in Supplementary Data 1.
