Variation in Production and Seasonal Development of Mountain Grasslands in Western Montana

摘要

Yearly differences in plant development and herbage production of prominent species within the Festuca idahoensis/Agropyron spicatum habitat type are documented for a 10-year period. Differences between northeast and southwest exposures at an elevation of 7,100 ft (2 164 m) are discussed. Data are expressed as ranges, means, and standard deviations. Correlation coefficients between production and major weather variables are given, and multiple regression models for predicting production from weather variables are presented.