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Comprehensive assessment of carbon cycling in Amazonian forest stands

Comprehensive assessment of carbon cycling in Amazonian forest stands. Yadvinder M alhi Luiz Aragao , Cecile Girardin , Dam Metcalfe, Javier Silva Espejo , Antonio Lola da Costa, Samuel Almeida. Above-ground wood productivity.

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Comprehensive assessment of carbon cycling in Amazonian forest stands

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

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

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

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

  5. Some Results

  6. Caxiuana Tapajos Manaus Tambopata

  7. Components of net primary productivity, Np Malhi et al., Global Change Biology, in press

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

  9. Aragao et al., in prep

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

  11. Contributing terms to soil respiration

  12. Comparison against direct soil respiration measurements

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

  14. Components of plant respiration

  15. Bottom-up estimations of gross primary production, Gp Gp = Np + Rautotrophic

  16. Top-down estimations of gross primary production, Gp Net Ecosystem Exchange Ecosystem Respiration CO2 Flux Gross Primary Production Time of day

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

  18. Estimations of carbon use efficiency, CUE CUE = Np / Gp = Np / (Gp + Rautotrophic)

  19. Carbon use efficiencies

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

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

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

  23. Trocha Union (3000 m elevation), Peru

  24. San Pedro (1500 m elevation), Peru

  25. NPP Variation with Elevation

  26. GPP Variation with Elevation

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