A ten-year record of aboveground biomass in a Kansas tallgrass prairie: effects of fire and topographic position.

M. D. Abrams, A. K. Knapp, L. C. Hulbert

Research output: Contribution to journalArticle

100 Scopus citations

Abstract

Lowland sites had significantly greater live biomass than upland sites for both burned and unburned prairie for 1975-85. Live biomass was greater on burned than unburned lowland sites, but was not significantly increased by fire on upland sites. Averaged across upland and lowland sites, mid-season live biomass was 422 g m-2 on annually burned and 364 g-2 on unburned sites. Each site had its lowest live biomass value during the severe drought year of 1980. Live biomass was most strongly (negatively) correlated with seasonal pan water evaporation, whereas dead biomass was (positively) correlated with the previous yr's precipitation. When aboveground biomass was sampled throughout the 1984 season and separated into several components, biomass of the graminoids was 40% lower, whereas that of forbs and woody plants was 200-300% greater in the unburned than in the annually burned site. -from Authors

Original languageEnglish (US)
Pages (from-to)1509-1515
Number of pages7
JournalAmerican journal of botany
Volume73
Issue number10
DOIs
StatePublished - Jan 1 1986

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Genetics
  • Plant Science

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