Total C, water-soluble C, and 3 soil enzymes associated with Ah horizons under ungrazed mixed prairie and fescue grassland ranges were assessed over a 23-month period. Generally, total C was higher in samples from heavily grazed sites than in those from ungrazed sites and was higher over the winter months than during the summer. Water-soluble C was generally higher in soil from mixed prairie than in soil from fescue grassland except for short periods during the winter. Enzymatic activities are highest in samples from the fescue grassland site regardless of grazing intensity. Enzymatic activities of both sites increased during the winter months. Grazing intensity affected enzymatic activities differently at the 2 sites. A working hypothesis is proposed to account for organic matter breakdown during the winter and spring months. This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries. The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information. Migrated from OJS platform August 2020
Scholarly peer-reviewed articles published by the Society for Range Management. Access articles on a rolling-window basis from vol. 1, 1948 up to 5 years from the current year. Formerly Journal of Range Management (JRM). More recent content is available by subscription from SRM.