Hydromorphologic control of streambed fine particle standing stocks influences in-stream aerobic respiration

For Habitat-scale methods:Streambed sediments (top ~3 cm) were taken from the stream thalweg every 15 m along each study reach (n = 5 samples per reach; Figure 1), following a modified method by Petticrew et al. (2007). The FPM standing stock was estimated using the ash-free dry mass method.

Microbial Metabolic Activity was estimated using the resazurin-resorufin bioreactive tracer as a proxy for aerobic respiration. (Haggerty et al., 2014).

Calculation of hydraulic characteristics and metabolic activity at reach-scale:
The BTC of Br- recorded at the end of each experimental reach was used to calculate the water transport and transient storage parameters within each reach by using a mobile-immobile model (Drummond et al., 2014a).