1. School of Natural Resources; University of Nebraska; Lincoln Nebraska
2. Environmental Division; Li-Cor Biosciences; Lincoln Nebraska
3. Department of Environmental Biological, and Pharmaceutical Sciences and Technologies; University of Campania “L. Vanvitelli”; Caserta Italy
4. Dendrosciences Laboratory; WSL Swiss Federal Research Institute; Birmensdorf Switzerland
5. Department of Geography; University of North Carolina; Chapel Hill North Carolina
6. Campbell Scientific Inc.; Logan Utah
7. Department of Biological Systems Engineering; University of Nebraska; Lincoln Nebraska