Rangeland Ecology & Management

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Drought and grazing: I. Effects on quantity of forage produced
Author
Heitschmidt, R. K.
Haferkamp, M. R.
Karl, M. G.
Hild, A. L.
Publisher
Society for Range Management
Publication Year
1999-09-01
Body

This research addresses the hypothesis that grazing intensity during and following drought can dramatically alter community level, post-drought recovery patterns. Research was conducted during the 1993 through 1996 growing seasons at the Fort Keogh Livestock and Range Research Laboratory located near Miles City, Mont. Study plots were twelve, 5 × 10-m non-weighing lysimeters constructed in 1992 on a gently sloping (4%) clayey range site. An automated rainout shelter was constructed to control the amount of precipitation received on 6 lysimeters during the 1992 growing season. We conclude from study results that the independent and combined effects of the imposed late spring to early fall drought and associated grazing treatments were minimal relative to soil water dynamics and aboveground net primary production although both grazing treatments reduced herbage standing crops. We attribute the absence of a strong response to the drought to its timing (i.e., late growing season) in that most herbage production in these cool-season dominated grasslands is completed by early summer. Thus, annual production processes in these grasslands avoided the major impacts of the drought. The results do not provide convincing evidence, however, that would lead us to completely reject our original hypothesis. Rather, they simply provide evidence that these grasslands are well adapted to surviving late growing season drought with or without intensive grazing by ungulates. 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

Language
en
Resource Type
Text
Document Type
Journal Issue/Article
Digital Object Identifier (DOI)
10.2307/4003770
Additional Information
Heitschmidt, R. K., Haferkamp, M. R., Karl, M. G., & Hild, A. L. (1999). Drought and grazing: I. Effects on quantity of forage produced. Journal of Range Management, 52(5), 440-446.
IISN
0022-409X
OAI Identifier
oai:repository.arizona.edu:10150/643932
Journal Volume
52
Journal Number
5
Journal Pages
440-446
Journal Name
Journal of Range Management
Keywords
warm-season grasses
cool-season grasses
timing
annuals
perennials
precipitation
biomass production
grazing intensity
prairies
drought
Montana
rangelands
grasses
forage
soil water