1. Comprehensive assessment of carbon cycling in Amazonian forest stands Yadvinder Malhi Luiz Aragao, Cecile Girardin, Dam Metcalfe, Javier Silva Espejo, Antonio Lola da Costa, Samuel Almeida....

2. Malhi et al (2004), The above-ground coarse wood productivity of 104 Neotropical forest plots, Global Change Biology Above-ground wood productivity

4. Photosynthesis 100% Wood respiration Leaf production Above-ground biomass production Below-ground biomass production Fine-root production The Carbon Allocation of Tropical Forests Leaf respiration Root respiration Volatile production Dissolved organic matter Autotrophic respiration Net primary production

5. GPP = 30.4 Manaus R leaf = 10.0±4.0 R stem = 4.2±1.0 R CWD = 2.5±0.3 R Total = 29.3±4.7 R Aut = 19.8±4.6 R Het = 9.6±1.2 NPP Total = 10.1±1.4 NPP Ag = 7.3±1.3 NPP Bg = 2.8±0.7 F doc = 0.19±0.07 D Fine litterfall = 3.6±0.7 D CWD = 3.58±1.0 R roots = 5.6±2.0 Predicted R soil = 12.6±2.3 Measured R soil = 12.1±1.7 D Root = 2.8±0.7 R soil het. = 7.1±1.1 NPP coarse roots = 0.8±0.2 NPP fine roots = 2.1±0.7 NPP stem = 2.58±0.06 NPP VOC = 0.13±0.06 NPP leaves,flowers,fruit = 3.6±0.7 NPP branch turnover = 1.0±1.0

6. Some Results

7. Manaus Tapajos Caxiuana Tambopata

8. Components of net primary productivity, N p Malhi et al., Global Change Biology, in press

9. Components of net primary productivity, N p Malhi et al., Global Change Biology, in press

10. Aragao et al., in prep

11. GPP = 30.4 Manaus R leaf = 10.0±4.0 R stem = 4.2±1.0 R CWD = 2.5±0.3 R Total = 29.3±4.7 R Aut = 19.8±4.6 R Het = 9.6±1.2 NPP Total = 10.1±1.4 NPP Ag = 7.3±1.3 NPP Bg = 2.8±0.7 F doc = 0.19±0.07 D Fine litterfall = 3.6±0.7 D CWD = 3.58±1.0 R roots = 5.6±2.0 Predicted R soil = 12.6±2.3 Measured R soil = 12.1±1.7 D Root = 2.8±0.7 R soil het. = 7.1±1.1 NPP coarse roots = 0.8±0.2 NPP fine roots = 2.1±0.7 NPP stem = 2.58±0.06 NPP VOC = 0.13±0.06 NPP leaves,flowers,fruit = 3.6±0.7 NPP branch turnover = 1.0±1.0

12. Contributing terms to soil respiration

13. Comparison against direct soil respiration measurements

14. GPP = 30.4 Manaus R leaf = 10.0±4.0 R stem = 4.2±1.0 R CWD = 2.5±0.3 R Total = 29.3±4.7 R Aut = 19.8±4.6 R Het = 9.6±1.2 NPP Total = 10.1±1.4 NPP Ag = 7.3±1.3 NPP Bg = 2.8±0.7 F doc = 0.19±0.07 D Fine litterfall = 3.6±0.7 D CWD = 3.58±1.0 R roots = 5.6±2.0 Predicted R soil = 12.6±2.3 Measured R soil = 12.1±1.7 D Root = 2.8±0.7 R soil het. = 7.1±1.1 NPP coarse roots = 0.8±0.2 NPP fine roots = 2.1±0.7 NPP stem = 2.58±0.06 NPP VOC = 0.13±0.06 NPP leaves,flowers,fruit = 3.6±0.7 NPP branch turnover = 1.0±1.0

15. Components of plant respiration

17. G p = N p + R autotrophic Bottom-up estimations of gross primary production, G p

18. CO 2 Flux Time of day Gross Primary Production Ecosystem Respiration Net Ecosystem Exchange Top-down estimations of gross primary production, G p

19. Calculation of gross primary production and comparison with flux towers

21. CUE = N p / G p = N p / (G p + R autotrophic ) Estimations of carbon use efficiency, CUE

22. Carbon use efficiencies

25. Malhi et al (2004), The above-ground coarse wood productivity of 104 Neotropical forest plots, Global Change Biology Above-ground wood productivity

26. 3450m 3250m 3000m 2750m 2500m 2000m 2250m 1750m Trocha Union, Kosnipata Ridge, Manu Peru Andes Biodiversity and Ecosystem Research Group: www.aberg.org 1500m 1250m 1000m 200m

27. 8.5 o C 9.2 o C 10.5 o C 11.9 o C 13.3 o C 15.3 o C 14.8 o C 16.7 o C Trocha Union, Kosnipata Ridge, Manu Peru Andes Biodiversity and Ecosystem Research Group: 19 o C 21 o C 22.1 o C 26.4 o C

28. Trocha Union (3000 m elevation), Peru

29. San Pedro (1500 m elevation), Peru

31. NPP Variation with Elevation

32. GPP Variation with Elevation