Document: RAN-3-40-14

Understanding California annual grassland structure using a state-transition approach.

JACKSON, R.D.* and J.W.BARTOLOME

University of California, Berkeley, U.S.A. 1

Abstract:
Using a spatially and temporally replicated dataset, we built a state-transition model for California annual grassland. We delineated vegetation states by allowing TWINSPAN to classify plot-level (10 m 2) species cover data collected from an experimental design that incorporated 5 residual dry matter (RDM) treatment levels representative of the range of grazing management prescriptions for this type (0, 280, 560, 841, 1121 kg RDM ha -1). We identified and described a new California annual grassland subtype

Keywords: nonequilibrium, grazing, plant community, TWINSPAN, CART, residual dry matter

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This abstract is being presented at: 8:30 AM in session:
Oral Session #59: Plant Communities: Vegetative Analysis.