Which level (s) of organization are the main focus of

Vitor Becker's work?

Community and ecosystem levels of organization are the main focus areas of Vitor Becker's work.

Explanation:

Serra Bonita reserve complex was established by Vitor Becker and his wife Clemira Souza in the Atlantic forest of Brazil. He studied agronomy and forestry and has a Ph. D in entomology.

Becker realized that the Atlantic forests are largely destroyed. After retirement Becker and Souza settled in the Serra Bonita mountain region and using their savings they bought land in the region and converted the area into Serra Bonita reserve complex.