Population growth, sex ratios, and women's work on the contemporary Amazon frontier

"This paper uses 1991 census and 1990 survey data from Brazil to test hypotheses regarding the relationship between population growth (most of which stems from immigration), sex ratios, and women's labor force participation on the Amazon frontier. Strong evidence supports the link between population growth and sex ratios, though significant local variation exists. The relationship between sex ratios and gender roles, especially female labor force participation and occupational mobility, is less clear and appears variable."