Processes of community development and responses of ecosystems to climate change. Progress report, September 28, 1988--September 27, 1989

Technical Report · Fri May 26 04:00:00 EDT 1989

DOI:https://doi.org/10.2172/10117752· OSTI ID:10117752

Redente, E F

Our studies focus on attempting to understand the role of decomposer-primary producer linkages in successional dynamics. We are testing a series of hypotheses that relate changes in plant species composition during succession to changes in activity and structure of the soil microfloral and faunal community, dynamics of soil organic matter, and availability of soil nutrients. As these successional patterns are identified, they are being applied to understanding specific processes and mechanics involved in ecosystem development during recovery from moderate and severe disturbances. These findings are then being used in conjunction with simulation models to assess potential effects of climate change on ecosystems. Our research involves field studies in northwestern Colorado and southeastern Washington, laboratory studies, and simulation modeling. Ongoing projects include studies of response patterns of primary producer and soil microbial communities to nutrient additions (N, P, and sucrose), the function of mycorrhizal fungi in plant community development, and the dynamics of litter decomposition under semiarid conditions. New studies are being implemented to investigate the significance of nutrient transfers from VAM fungi to plants and plant-root exudate interactions, and to relate this to understanding their roles in succession.

• Research Organization: Colorado State Univ., Fort Collins, CO (United States). Dept. of Range Science
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-87ER60612
• OSTI ID: 10117752
• Report Number(s): DOE/ER/60612--2; ON: DE92007020
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540210
550200
550700
59 BASIC BIOLOGICAL SCIENCES
BASIC STUDIES
BIOCHEMISTRY
CLIMATIC CHANGE
COLORADO
COMPUTERIZED SIMULATION
DECOMPOSITION
ECOLOGICAL SUCCESSION
ECOSYSTEMS
ENVIRONMENTAL IMPACTS
FERTILIZATION
MATHEMATICAL MODELS
MICROBIOLOGY
NITROGEN
NUTRIENTS
PLANTS
PROGRESS REPORT
SITE CHARACTERIZATION
SOIL CHEMISTRY
SOILS
SPECIES DIVERSITY
WASHINGTON
WASTES