1 Subjects: “...tight gas reservoir...”

2 Subjects: “...gas exchange...”

3 Table of Contents: “... use -- Agricultural transitions at dryland and tropical forest margins: actors, scales and trade-offs...”

4 Table of Contents: “... point sources in South Africa -- World emissions of mercury from artisanal and small scale gold mining...”

5 “... by small-scale cattle farmers in the Amazon; the effect on the climate of rising greenhouse gas emissions...”

6 Table of Contents: “... and Magnitude of Events -- Frost Hazard -- Fujita Tornado Scale -- Fumarole -- Galeras Volcano, Colombia -- Gas...”