As our lengthy sur vey red a wide array of variables. we judg that 50 dents per strata provided a balance between efficient use of survey effort and maximal accuracy in estimates obtained More specifically, our pilot survey of 24 fishers and gleaners returned coefficients of variation from well-sampled variables that ranged from 19.5% to 332%, depending on the variable. Median within-group coefficient of variation across all well-sampled vari ables was 56%, giving a detectable effect size below 20% within a stratum's 50 respondents or below 12% for the full sample of 150, using standard power analysis assumptions (a-0.05 B-0.2)