Effectiveness of conservation easements in agricultural regions.

Conservation easements are a standard technique for preventing habitat loss, particularly in agricultural regions with extensive cropland cultivation, yet little is known about their effectiveness. I developed a spatial econometric approach to propensity-score matching and used the approach to estimate the amount of habitat loss prevented by a grassland conservation easement program of the U.S.

Neighborhood design and rates of walking and biking to elementary school in 34 California communities.

Purpose: This study evaluates the relationship between neighborhood design and rates of students walking and biking to elementary school.

Design: Pairwise correlations and multiple regression models were estimated based on a cross-sectional study of elementary schools and their surrounding neighborhoods. Setting and Subjects.