Soil ammonium Data Category Other Cedar Creek Experiments and Data Principle Investigator(s) Scott Gleeson David Tilman Year Start 1987 Year End 1987 Number of Years with Data 1 year Dataset Link https://portal.edirepository.org/nis/mapbrowse?packageid=knb-lter-cdr.144.newest Link to Experiment Page e042: Traits: Biomass Allocation Trends in Old Field in Relation to Gradients of Succesional Age and Soil Nitrogen