University of Minnesota
University of Minnesota
College of Biological Sciences
http://www.cbs.umn.edu/

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The Seasonal Effects of Nitrogen Addition in the Spring on Vegetation at Differing Times of the Growing Season - Experiment 023


Plant aboveground biomass data

Years Available: 1985

Principle Investigators

Wedin, David
Tilman, David

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ATTRIBUTES

FieldNameDefinitionUnitCode
1Field number/letterField number/letter
2Experiment numberExperiment number
3Nitrogen treatmentNitrogen treatment applied twice per year5=8.0 g/m2; 7=25.0 g/m2; 9=0.0 g/m2
4Nitrogen fertilizer addition (g/m2/yr)Total annual nitrogen fertilizer additiongramsPerMeterSquaredPerYear
5Replicate IdReplicate Id
6QuadratQuadrat
7Sampling date (YYMMDD)Sampling date (YYMMDD)
8Number of days from April 15thNumber of days from April 15thdimensionless
9SpeciesSpecies name
10Median plant height (cm)Median plant height (cm)centimeter
11Maximum plant height (cm)Maximum plant height (cm)centimeter
12Plant density (# of stems / m2)Plant density (# of stems / m2)dimensionless
13Species Biomass (g/m2)Species Biomass (g/m2)gramsPerMeterSquared
14Species proportion of total biomassSpecies proportion of total biomassdimensionless
 

SAMPLE DATASET

Field number/letterExperiment numberNitrogen treatmentNitrogen fertilizer addition (g/m2/yr)Replicate IdQuadratSampling date (YYMMDD)Number of days from AprilSpeciesMedian plant height (cm)Maximum plant height (cm)Plant density (# of stemsSpecies Biomass (g/m2)Species proportion of total biomass
C235163185050823Ambrosia coronopifolia6300.250.0102
C235163185050823Anemone cylindrica71.510.0614
C235163185050823Carex sp.1520.5501.70.0692
C235163185050823Miscellaneous litter344.90
C235163185050823Mosses & lichens 24.340
C235163185050823Panicum perlongum4.55.21300.980.0399
C235163185050823Poa pratensis1016128011.640.4736
C235163185050823Schizachyrium scoparium69.23201.910.0777
C235163185050823Solidago nemoralis3.40.790.0321
C235163185050823Sorghastrum nutans78.56905.80.236
C23902185060551Anemone cylindrica4.64.6100.260.0032
C23902185060551Artemisia ludoviciana1215.5303.220.0393
              

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The Seasonal Effects of Nitrogen Addition in the Spring on Vegetation at Differing Times of the Growing Season : Plant aboveground biomass data

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