Bledsoe, L.J. (Sam), Assoc. Research Engineer- Univ. Calif.-Davis (ret.), Ph.D., Colorado State University. Ecosystem and landscape ecology, applications of mathematics, statistics, models and computer technology to analysis and management of environmental and natural resource systems. Multi-component, multi-trophic level dynamics of terrestrial, aquatic and marine landscapes; integration of physical and biotic factors; ecotoxicology. Now retired from all the above-- I grow organic walnuts, hike and bike in the hills of N. California and weed my garden. And play with electronics and mathematics.