“…In the past, central research questions have focussed on three issues: the extent an ecological resource base attracts migrants (Bilsborrow and Ogendo, 1992;Bremner and Perez, 2002;Curran, 2002;Dwyer and Minnegal, 1999;Hunter, 1998;Ruilai, 1992); the extent migrants differ from non-migrants in their ecologically destructive behavior (Bilsborrow and Ogendo, 1992;Bilsborrow, 1992;Pichon, 1997;Sierra, 1999); and the extent the capacity of social institutions is strained by migrant incorporation and serves as a more proximate explanation for resource degradation (Bernacsek, 1986;Bertram, 1986;Bilsborrow and DeLargy, 1991;Bilsborrow and Carr, 2000;Connell, 1994;Connell and Conway, 2000;DeWalt and Rees, 1994;Dwyer and Minnegal, 1999;Ewell and Poleman, 1980;Gould, 1994;Jodha, 1985;Katz, 2000;McIntosh, 1993;Ostrom, 1990). As mentioned earlier, most of these studies have examined the impact of migration on the terrestrial environment.…”