Extended Data Figure 5: Comprehensive forest plot measurement results.
From: Drought sensitivity of Amazonian carbon balance revealed by atmospheric measurements
a, Plant carbon expenditure (NPP plus autotrophic respiration, an upper bound on gross primary production) for 14 1-hectare plots where all NPP and autotrophic respiration components are measured. Eight 1-hectare plots did not experience drought (blue line), six experienced drought, three in the dry lowlands (red line), and three in humid lowland regions ±standard error (black line). The black dashed line is the average seasonal value for 2009 (a typical year) repeated through 2010 and 2011. The hatched bar is the mean drought period for the six drought sites, based on CWD. b, Meteorology data from drought plots. Data from Skye instruments meteorology stations from January 2009 to December 2011 near the drought plots (black) for (top left) cumulative water deficit (millimetres per month) and (bottom left) air temperature (in °C). On the right, both plots are the anomalies for the same variable directly to its left with negative values representing a lower than average temperature or precipitation. The hatched bar highlights the approximate period of the 2010 drought in the region based on CWD anomaly. c, Intensive carbon balance forest census sites.
