Repeated measurements

Repeated field measurements of trace gas flux at the soil surface at five forest sites in Panama. Gases measured include: carbon dioxide (CO2; mg C m-2 hr-1), methane (CH4; ug C m-2 hr-1), nitrous oxide (N2O; ug N m-2 hr-1), nitric oxide (NO; ug N m-2 hr-1) and initial nitric oxide concentration (NOSt; ppb). Other data collected from the field: soil extractable nitrate (NO3; mg N kg-1) and ammonium (NH4; mg N kg-1), soil temperature (Temp; oC) and soil gravimetric water content (Moisture; g g-1). Site numbers correspond to the map shown in the supplementary material for this article.