@inbook {KNZ001125,
	title = {Estimating aboveground net primary production in grassland and herbaceous dominated ecosystems},
	booktitle = {Principles and Standards for Measuring Net Primary Production},
	year = {2007},
	pages = {27 -48},
	publisher = {Oxford University Press, NY},
	organization = {Oxford University Press, NY},
	abstract = {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.
},
	keywords = {LTER-KNZ},
	author = {Alan K. Knapp and J. M. Briggs and Childers, D.L. and Sala, O.E.}
}
