People

David Tilman

Position

Director

Research

Population ecology and theory of community dynamics and biodiversity; role of resource competition; biodiversity and ecosystem functioning

Experiments

Choose an Experiment to View...Addition of Schizachyrium scoparium Seeds to the Lawrence Strips \nBAC: Biodiversity and Climate\nBelow Ground Biomass Allocation\nBig and Little Bluestem Invasion Experiment\nBig and Little Bluestem Invasion in a Seven Year Old Field\nBiodiversity II: Effects of Plant Biodiversity on Population and Ecosystem Processes \nBiodiversity: A field test of biofuel production and ground-water quality.\nBiofuel Comparison \nBiomass-Available Nutrient Experiment\nBlowdown Survey (BLDWN) \nComponents of Plant Competition Along an Experimental Gradient of Nitrogen Availability \nDisrupting the competition-colonization tradeoff: a test of niche theory and implications of biological invasions \nDynamic of Vesicular-arbuscular Mycorrhizae During Old Field Succession\nEffect of Bird Predation on Grasshopper and Plant Communties \nEffect of Burning patterns on Vegetation in the Fish Lake Burn Compartments\nEffect of Light Availability on the Growth Rates of Different Plant Species \nEffect of Soil Nitrogen Availability on the Growth Rates of Different Plant Species\nEffects of Nitrogen Addition on Large Areas Over a Long Period of Time With Natural Herbivore Levels \nEffects of Various Nutrients and Water on Vegetation \nFAB 1 : Forests and Biodiversity Experiment - High density diversity experiment\nFire X Nitrogen: Interactive Effects in a Prairie-Like Grassland\nHerbivory by Nitrogen Interactive Effects on Community and Ecosystem Processes and Dynamics\nInteractive Effects of Fertility and Distribution on Plant Community Diversity and Structure\nLegume Competition Garden \nLegume Survey in Experimental Plots \nLong-Term Nitrogen Deposition During Grassland Succession\nLong-Term Nitrogen Deposition: Population, Community, and Ecosystem Consequences\nMechanisms of Grasshopper-Plant Interactions \nMultiple Traits of Multiple Plant Species Measured in Monoculture Gardens\nN Mineralization Rates at Different Levels of NH4NO3 Addition\nNitrogen Addition and Dynamics of Recovery from Cessation of N Addition\nNitrogen Mineralization for Experiment e020\nNutrient Uptake and Photosynthesis Rates of Grasses \nOld-Field Chronosequence: Plant Productivity \nOptimal Root/Shoot Allocation Behavior in Response to Relative Rates of Supply of Root (N) and Shoot (Light) Resources \nPhotosynthesis Rates Under Different Nitrogen and Light Levels \nPlant Colonization and Species Diversity in an Old Field \nPlant Competition Under Different Nitrogen Levels:A Garden Experiment\nPlant Thinning for Intra and Interspecific Competition Study\nPlant and Soil Controls on Mycorrhizal Fungal Communities \nPoa Project- Variation in Competition Intensity with Productivity: A Collaborative Proposal\nRelationship Between Biomass Allocation Patterns and Relative Growth Rates \nSchizachyrium scoparium Nutrient Uptake Profiles\nSeed Addition in Lawrence Strips \nSeed Mass and Dispersal Mode of Common Plants at CCNHA\nSeed Size and Establishment\nSeedling Addition Experimant in Field D \nSelective Herbivory and Plant Allocation \nSoil Heterogeneity and Plant Diversity in an Oak Savanna\nSuccessional Dynamics on a Resampled Chronosequence\nThe Ability of Species to Invade an Area With Established Individuals at Different Nitrogen Levels\nThe Competitive Abilities of 4 Species at Different Nitrogen Levels\nThe Effect of Fire and Fertilizer on Old-Field Vegetation \nThe Effect of Nitrogen Addition and Different pH Levels on Microorganism Populations\nThe Effect of Nitrogen Addition and Irrigation in High Diversity Prairies\nThe Effect of Nitrogen Addition and Light Shading on Vegetation Under Herbivore Pressure \nThe Effect of Nitrogen Addition on Litter Decomposition \nThe Effect of Nitrogen and Light Gradients on the Growth Rate of Two Plant Species\nThe Effect of Nitrogen and Light Gradients on the Growth Rates of Three Plant Species \nThe Effect of Seed Addition on Biodiversity in an Oak Savanna\nThe Seasonal Effects of Nitrogen Addition in the Spring on Vegetation at Differing Times of the Growing Season \nThe Small Biodiversity Experiment\nTraits: Biomass Allocation Trends in Old Field in Relation to Gradients of Succesional Age and Soil Nitrogen\nTraits: Competition and Resource Reduction for Five Grass Species Grown in Monoculture and Competition in Soils with Different Nitrogen Availabilities\nTree Competition Garden\nTrophic Structure: Insect Species Diversity, Abundance and Body Size\nUptake and Allocation: A 15N Study\nVegetation Phenology and Grasshopper Competition\nWoody and Herbaceous Response to Nitrogen Fertilization in an Oak Savanna\n

Contact Information

Email: tilman@umn.edu
Phone: 612-625-5740
Fax: 612-624-6777

100 Ecology Building
1987 Upper Buford Circle
St Paul MN, 55108

Related Links

Faculty web page