Plant community structure

TitlePlant community structure
Publication TypeConference Proceedings
Year of Publication1971
AuthorsRisser P.G
EditorFrench NR
Conference NamePreliminary Analysis of Structure and Function in Grasslands: Proceedings of Symposium Entitled "The Grassland Biome: Analysis and synthesis of First Year Data"
Series TitleRange Science Department Science Series 10
Date PublishedSeptember 1, 197
PublisherColorado State University
Conference LocationColorado State University, Fort Collins, Colorado
Keywordsabstract, abstracts, biomass,grassland, conference, conference proceedings, conferences, grassland community, structure, proceeding, proceedings
Abstract The 1970 field season data show that 65% of the aboveground plant biomass on the Grassland Biome study sites was composed of grasses and that the tribes Andropogoneae and Chlorideae and the family Compositeae contribute well over half the total live biomass. The Hays, Osage, Bison, and Bridger Network Sites have bunchgrasses as the dominant growth form, while Jornada, Pantex, and Pawnee have mostly sod grasses. Dickinson and Cottonwood have a substantial representation of both growth forms. If the Network Sites are ordinated by either floral or vegetational similarities, the resulting configurations are very similar and closely approximate a site ordination based on environmental variables. There appears to be a general increase in phenological diversity with an increase in the amount of live standing crop. The concepts of pattern, species diversity, and aerial cover were evaluated on only a few sites, so biome wide comparisons were not possible. Phenology was measured throughout the 1970 growing season, but the interpretation of these data has proved difficult. Certain elementary characteristics such as height of vegetation, and proportion of warm and cool season grasses, showed a consistent relationship across the network. However, one of the most interesting aspects of the grassland structural data is the fact that many characteristics do not show a uniform response, indicating the multitude of adaptive strategies employed within the grassland ecosystem.
Custom 1Fort Collins, Colorado