Currently, he is affiliated to the Humboldt State University, USA. His international experience includes various programs, contributions and participation in different countries for diverse fields of study.  His research interests in z Growth and yield; Forest productivity; Semi-variance; Sequoia sempervirens; Site quality; Spatial autocorrelation reflect in his wide range of publications in various national and international journals.  He serves as a member of various associations, apart from being an author for many books. 

z Growth and yield; Forest productivity; Semi-variance; Sequoia sempervirens; Site quality; Spatial autocorrelation