01315nas a2200145   4500008004100000245015800041210006900199300000900268490000700277520069900284653002200983100001901005700002001024856012501044       1991                        eng d00aEstimating aboveground biomass in tallgrass prairie with the harvest method: determining proper sample size using jackknifing and Monte Carlo simulations0 aEstimating aboveground biomass in tallgrass prairie with the har  a1 -60 v363 a<p>Sample adequacy for estimating aboveground biomass in the Flint Hills (Kansas) tallgrass prairie was determined by using a combination of jackknifing and Monte Carlo simulations. Based on this analysis, we concluded that 14 and 16 0.1 -m2 (20 by 50 cm) quadrats should be harvested in burned and unburned sites, respectively, when estimating total, live graminoid and previous years dead biomass. However, 20 quadrats should be harvested to detect at least a 20% difference in production between sites due to treatments such as fire. Due to high variability in forb biomass, other measurements (cover or density) may be more appropriate for detecting fire effects on this group of plants</p>10atallgrass prairie1 aBriggs, J., M.1 aKnapp, Alan, K.  uhttp://knz.lternet.edu/content/estimating-aboveground-biomass-tallgrass-prairie-harvest-method-determining-proper-sample