Perspectives in Grassland Ecology: Results and Applications of the US/IBP Grassland Biome Study, Volume 32
Springer New York, 1979 - Nature - 204 pages
This volume is a result of the summary and synthesis of data collected in the Grassland Biome Program, which is part of the American contribution to the International Biological Program (IBP). The purpose of this volume is to present a summary of quantitative ecological investigations of North American grass lands and to present a set of broad comparisons of their characteristics and functions as well as the results of some models and experiments that lead to practical considerations of the management of grasslands. Synthesis is a continuing activity in science. Early in the Grassland Biome Program there was a synthesis of literature data on grasslands, edited by R. L. Dix and R. G. Beidleman (1969). Results of the first year of field data collection under this program were synthesized in a volume edited by N. R. French (1971). Development of the large-scale model constructed to depict the processes and the dynamics of state variables in grassland ecosystems was presented by Innis (1978). Soon to appear will be two volumes integrating studies of American grasslands with IBP studies in other grasslands of the world (Coupland, in press) and the application of systems analysis to understanding grassland function and utilization (Breymeyer and Van Dyne, in press). The present volume presents current results and comparisons of field investigations and experimental studies that were conducted under this program.
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North American Grasslands in Perspective
Simulated Biomass Dynamics
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abiotic aboveground production analysis animal arthropods average Bazilevich belowground biomass Biophoge blue grama Bunchgrass cattle weight gain climatic Collins Colorado State Univ Colorado State University comparison consumption cool-season annual grass cow-calf cow-calf grazing decrease desert grassland drought dynamics Ecol Ecology effect estimates fertilizer Figure forage forbs Fort Collins grassland ecosystems grassland sites grazing intensity growing season growth heavy grazing increased invertebrates irrigation leaf litter loss of NH3 microarthropods Mixed-grass Moderate mTē yr nematodes net primary production nitrogen North American grasslands northern shortgrass nutrient Osage pasture Pawnee photosynthesis plant Predators primary consumer primary production Range Manag rates respiration roots sampling saprophagic Secondary consumers shortgrass prairie small mammals soil water potential Soprophoge standing crop steer grazing Table tallgrass prairie temperature treatment trophic groups trophic levels trophic pyramids US/IBP Grassland Biome values variables vegetation warm-season water potential