Complex sentence: Eduardo Grimaldi (1929--2010) was a Colombian ecologist whose work included projects to combat erosion and restoration work in the "Cerros Orientales" (Eastern mountains) in Bogotá after fire in the early 1970s.
Split into simpler sentences: Eduardo Grimaldi (1929--2010) was a Colombian ecologist who had been involved in projects to combat erosion. He was involved in restoration work in the "Cerros Orientales" (Eastern mountains) in Bogotá after fire in the early 1970s.