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Source and sink carbon dynamics and carbon allocation in the Amazon basin

Doughty, Christopher E. ; Metcalfe, D. B. ; Girardin, C. A. J. ; Amezquita, F. F. ; Durand, L. ; Huaraca Huasco, W. ; Silva-Espejo, J. E. ; Araujo-Murakami, A. ; da Costa, M. C. ; da Costa, A. C. L. ; Rocha, W. ; Meir, P. ; Galbraith, D. ; Malhi, Y.

Global biogeochemical cycles, 2015-05, Vol.29 (5), p.645-655 [Periódico revisado por pares]

Washington: Blackwell Publishing Ltd

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  • Título:
    Source and sink carbon dynamics and carbon allocation in the Amazon basin
  • Autor: Doughty, Christopher E. ; Metcalfe, D. B. ; Girardin, C. A. J. ; Amezquita, F. F. ; Durand, L. ; Huaraca Huasco, W. ; Silva-Espejo, J. E. ; Araujo-Murakami, A. ; da Costa, M. C. ; da Costa, A. C. L. ; Rocha, W. ; Meir, P. ; Galbraith, D. ; Malhi, Y.
  • Assuntos: autotrophic respiration ; Carbon ; Carbon cycle ; Climate Research ; Earth and Related Environmental Sciences ; Geovetenskap och miljövetenskap ; GPP ; Klimatforskning ; Natural Sciences ; Naturvetenskap ; NPP ; PCE ; Seasons ; tropical forests
  • É parte de: Global biogeochemical cycles, 2015-05, Vol.29 (5), p.645-655
  • Notas: UK Natural Environment Research Council - No. NE/D01025X/1; No. NE/D014174/1; No. NE/F002149/1
    Gordon and Betty Moore Foundation to the Amazon Forest Inventory Network (RAINFOR)
    NERC AMAZONICA - No. NE/F005776/1
    ARC - No. FT110100457
    istex:F147F043D7893B3F36B9E4191DB46ED83E39F3F6
    EU FP7 GEOCARBON
    ark:/67375/WNG-4HBP1K1X-L
    Text S1, Figures S1-S8, and Tables S1-S4
    ArticleID:GBC20275
    Andes Biodiversity and Ecosystems Research Group (ABERG)
    ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: Changes to the carbon cycle in tropical forests could affect global climate, but predicting such changes has been previously limited by lack of field‐based data. Here we show seasonal cycles of the complete carbon cycle for 14, 1 ha intensive carbon cycling plots which we separate into three regions: humid lowland, highlands, and dry lowlands. Our data highlight three trends: (1) there is differing seasonality of total net primary productivity (NPP) with the highlands and dry lowlands peaking in the dry season and the humid lowland sites peaking in the wet season, (2) seasonal reductions in wood NPP are not driven by reductions in total NPP but by carbon during the dry season being preferentially allocated toward either roots or canopy NPP, and (3) there is a temporal decoupling between total photosynthesis and total carbon usage (plant carbon expenditure). This decoupling indicates the presence of nonstructural carbohydrates which may allow growth and carbon to be allocated when it is most ecologically beneficial rather than when it is most environmentally available. Key Points Total tropical forest NPP peaks in the wet season in the humid lowlands Seasonal reductions in wood NPP are not driven by reductions in total NPP There is a temporal decoupling between GPP and carbon usage
  • Editor: Washington: Blackwell Publishing Ltd
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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