Spatiotemporal variability of soil respiration in a seasonal tropical forest.

ABSTRACT: We monitored soil CO ₂ effluxes for over 3 years in a seasonally wet tropical forest in Central Panama using automated and manual measurements from 2013 to 2016. The measurements displayed a high degree of spatial and temporal variability. Temporal variability could be largely explained by surface soil water dynamics over a broad range of temporal scales. Soil moisture was responsible for seasonal cycles, diurnal cycles, intraseasonal variability such as rain-induced pulses following dry spells, as well as suppression during near saturated conditions, and ultimately, interannual variability. Spatial variability, which remains largely unexplained, revealed an emergent role of forest structure in conjunction with physical drivers such as soil temperature and topography. Mean annua

SUBMITTER: Rubio VE 

PROVIDER: S-EPMC5587468 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature