Annual Crops Population Estimates
The number of crop plants are counted in a one square meter quadrant.
This datatable is part of the Annual Net Primary Production on the Main Cropping System Experiment dataset. Aboveground annual net primary production (ANPP) has been measured on the LTER main site since 1990 and on the successional and forested sites since 1993. ANPP is measured at peak biomass for a given treatment. In some systems with multiple harvests or complex communities that have peaks occurring at different times of the year, measurements are taken at multiple times per year. Additional ANPP measurements are made where appropriate using leaf litter traps, estimates of diameter from tree basal diameter and for the poplar treatment occasional destructive harvests. See the ANPP protocol for descriptions of the sampling and measurement methods for each of the treatments.
|Experiment:||Main Cropping System Experiment (MCSE)|
|Data available from:||October 2005 to July 2016|
|Core Areas||Primary Production,Populations,Disturbance|
|treatment||treatment that the sample came from|
|replicate||replicate plot the sample was taken from|
|station||the station where the plants were collected|
|species||crop species grown|
|plants per square meter||number of plants per square meter quadrant||number/metersquared|