%0 Book Section %B Principles and Standards for Measuring Net Primary Production %D 2007 %T Estimating aboveground net primary production in grassland and herbaceous dominated ecosystems %A Alan K. Knapp %A J. M. Briggs %A Childers, D.L. %A Sala, O.E. %X This paper reviews past and currently accepted methods of estimating aboveground net primary production (NPP) in grass and herb-dominated ecosystems, provides some guiding principles and recommendations to facilitate accurate determination of aboveground NPP, and discusses biases and errors and sampling adequacy. %B Principles and Standards for Measuring Net Primary Production %I Oxford University Press, NY %P 27 -48 %G eng %M KNZ001125