“…Other investigations contrary to the classical theory of island biogeography reported that there was a significant negative correlation between the total number of species and area or isolation of habitat islands Webb and Hopkins, 1984;Balkenhol et al, 1991;Usher et al, 1993). Other studies found that the number of species was unrelated to both the habitat size and isolation (Balkenhol et al, 1991;Pajunen et al, 1995;Steffan-Dewenter and Tscharntke, 2000;Magura et al, 2001;Bonte et al, 2002;Gibb and Hochuli, 2002;Pearce et al, 2005;Kapoor, 2008). We also found no significant relationship between the number of species and the area or the isolation of the grassland fragments.…”