Ziom Adam Michael

ABSTRACT Elevated tropospheric ozone (O3) may alter nitrous oxide (N2O) emissions from rice soils by affecting soil nitrogen pools and microbial activity. Understanding these interactions is essential for predicting the future behavior of rice ecosystems under elevated ozone stress.

ABSTRACT This experiment was conducted under Open Top Chambers (OTCs) to investigate the responses of CH4 fluxes with respect to soil C pools and microbial activity from rice soils exposed to different levels of elevated Ozone (e[O3]). The different treatments were: (i) UC = ambient [O3] under open field condition (30   ±   5 ppb), (ii) CC = ambient [O3] under OTC (30   ±   5 ppb), (iii) EO40 = elevated [O3] under OTC (40   ±   5 ppb) and (iv) EO60 = elevated [O3] under OTC (60   ±   5 ppb)].