Published on Theoretical Biology Forum 104 (1), 35, 2011 Author(s): Roberto Cazzolla Gatti [1] [1] Department of Forest Resources and Environment (DISAFRI), Via San Camillo De Lellis, University of Tuscia, 01100 Viterbo, Italy Summary: A. McFayden[1] and G.E. Hutchinson’s[2] defined a niche as a multidimensional space or ipervolume within the environment that allow an individual…