Grassland above-ground net primary productivity (ANPP) for USA IBP sites (+ Konza), computed using various NPP algorithms  
Source: monthly biomass dynamics, ORNL DAAC NPP Database, February-May 1998
[units are g/m2/year]

Sitecode; Sitename       ; Location                  ; Lat.  ; Long.  ; Years; Peak Biom; Peak Total; Max-Min; IBP; Avg Reptd;    
                                                                  
ALE; (Arid Lands Ecology); Richland, Washington      ; 46.40 ; -119.55;     2;      75;     221;     68;     61;     98;   
BRD; (Bridger)           ; Bozeman, Montana          ; 45.78 ; -110.78;     2;     223;     242;    134;    134;    249;   
BSN; (Bison Range)       ; Missoula, Montana         ; 47.32 ; -114.27;     1;     221;     331;    170;    168;    272;   
CPR; (CPER/SGS)          ; Nunn, Colorado            ; 40.82 ; -104.77;     5;      69;     N/A;     40;     44;    172;   
CTT; (Cottonwood)        ; Cottonwood, S. Dakota     ; 43.95 ; -101.87;     3;     188;     317;    182;    203;    249;   
DCK; (Dickinson)         ; Dickinson, N. Dakota      ; 46.90 ; -102.82;     1;     270;     719;    233;    264;    351;   
HYS; (Hays)              ; Hays, Kansas              ; 38.87 ; -99.38 ;     1;     225;     240;    225;    235;    363;   
JRN; (Jornada IBP site)  ; Las Cruces, New Mexico    ; 32.60 ; -106.85;     3;      97;     142;     90;     96;    148;   
KNZ; (Konza)             ; Manhattan, Kansas         ; 39.10 ; -96.61 ;     7;     327;     N/A;    260;    300;    N/A;   
OSG; (Osage)             ; Pawhuska/ Tulsa, Oklahoma ; 36.95 ; -96.55 ;     3;     287;     783;    285;    293;    346;   
PNT; (Pantex)            ; Amarillo, Texas           ; 35.30 ; -101.53;     3;     349;     580;    272;    396;    257;   


NPP algorithms used:

Peak Biom  - Peak aboveground biomass
Peak Total - Peak total aboveground live plus dead biomass
Max-Min    - Difference of maximum minus minimum aboveground biomass
IBP        - Sum of positive increments of aboveground biomass
Avg Reptd  - Average for ungrazed plots reported by Sims and Singh (1978) J. Ecol. 66, 573-597 
             (sum of peak aboveground biomass for each species)  

Years = number of years of data available in ORNL DAAC database
N/A = not available
N.B. CPER/SGS data are herbaceous biomass only from 'ESA' plots - excluding shrubs/succulents such as Opuntia
     Pantex data are total live biomass - including shrubs/succulents (some confusion here)
     Konza Prairie data from 1980s are included for comparison