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Article Dans Une Revue Nature Année : 2015

Long-term decline of the Amazon carbon sink

R J W Brienen (1) , O L Phillips (1) , T R Feldpausch (1, 2) , E Gloor (1) , T R Baker (1) , J Lloyd (3, 4) , G Lopez-Gonzalez (1) , A Monteagudo-Mendoza (5) , Y Malhi (6) , S L Lewis (1, 7) , R Vásquez Martinez (8) , M Alexiades (9) , P Alvarez-Loayza (10) , A Andrade (11) , L E O C Aragão (2, 12) , A Araujo-Murakami (13) , E J M M Arets (14) , L Arroyo (15) , G A Aymard C (16) , O S Bánki (17) , Christopher Baraloto (18, 19) , J Barroso (20) , Damien Bonal (21) , R G A Boot (22) , J L C Camargo (11) , C V Castilho (23) , V Chama (24) , K J Chao (1, 25) , Jérome Chave (26) , J A Comiskey (27) , F Cornejo Valverde (28) , L da Costa (29) , E A de Oliveira (30) , A Di Fiore (31) , T L Erwin (32) , S Fauset (1) , M Forsthofer (30) , D R Galbraith (1) , E S Grahame (1) , N Groot (1) , Bruno Hérault (18) , N Higuchi (11) , E N Honorio Coronado (1, 33) , H Keeling (1) , T J Killeen (34) , W F Laurance (35, 36) , S Laurance (35, 36) , J Licona (37) , W E Magnussen (11) , B S Marimon (30) , B H Marimon-Junior (30) , C Mendoza (38, 39) , D A Neill (40) , E M Nogueira (11) , P Núñez (24) , N C Pallqui Camacho (24) , A Parada (15) , G Pardo-Molina (41) , J Peacock (1) , M Peña-Claros (37, 42) , G C Pickavance (1) , N C A Pitman (43, 44) , L Poorter (45) , A Prieto (46) , C A Quesada (41) , F Ramírez (46) , H Ramírez-Angulo (47) , Z Restrepo (48) , A Roopsind (49) , A Rudas (50) , R P Salomão (51) , M Schwarz (1) , N Silva (52) , J E Silva-Espejo (24) , M Silveira (20) , J Stropp (53) , J Talbot (1) , H ter Steege (54, 55) , J Teran-Aguilar (56) , J Terborgh (43) , R Thomas-Caesar (52) , M Toledo (37) , M Torello-Raventos (57, 35, 58) , R K Umetsu (30) , G M F van Der Heijden (59, 60) , P van Der Hout (61) , I C Guimarães Vieira (51) , S A Vieira (62) , E Vilanova (63) , V A Vos (41) , R J Zagt (22)
1 University of Leeds
2 Coll Life & Environm Sci
3 Sci Technol & Med, Dept Life Sci,
4 Sch Marine & Trop Biol
5 Prolongac Bolognesi Mze
6 Sch Geog & Environm, Environm Change Inst
7 UCL - University College of London [London]
8 Prolongac Bolognesi Mze
9 Sch Anthropol & Conservat
10 Ctr Trop Conservat
11 INPA - Instituto Nacional de Pesquisas da Amazônia = National Institute of Amazonian Research
12 INPE - Instituto Nacional de Pesquisas Espaciais
13 Museo Hist Nat Noel Kempff Mercado
14 WUR - Wageningen University and Research [Wageningen]
15 Museo Hist Nat Noel Kempff Mercado
16 Programa Cienclas Agro & Mar, UNELLEZ Guanare
17 Biodiversiteit Ecosyst Dynam
18 UMR ECOFOG - Ecologie des forêts de Guyane
19 Dept Biol Sci, Int Ctr Trop Bot
20 UFAC - Universidade Federal do Acre
21 EEF - Ecologie et Ecophysiologie Forestières [devient SILVA en 2018]
22 TBI - Tropenbos International
23 Embrapa Roraima
24 UNSAAC - Universidad Nacional de San Antonio Abad del Cusco
25 Coll Agr & Nat Resources
26 EDB - Evolution et Diversité Biologique
27 Northeast Reg Inventory & Monitoring Program
28 Madre De Dios
29 UFPA - Federal University of Para - Universidade Federal do Pará - UFPA [Belém, Brazil]
30 UNEMAT - Universidade do Estado de Mato Grosso
31 Dept Anthropol
32 Smithsonian Institution
33 IIAP - Instituto de Investigaciones de la Amazonía Peruana
34 WWF - World Wide Fund
35 Ctr Trop Environm & Sustainabil Sci TESS
36 Sch Marine & Environm Sci, Cairns
37 IBIF - Instituto Boliviano de Investigacion Forestal
38 Manejo Forestal Tierras Trop Bolivia
39 Escuela Ciencias Forestales ESFOR
40 Universidad Estatal Amazonica
41 Universidad Autonoma del Beni
42 Forest Ecol & Forest Management Grp
43 Ctr Trop Conservat
44 Field Museum of Natural History [Chicago, USA]
45 Forest Ecol & Forest Management Grp
46 Universidad Nacioal de Amazonia Peruana
47 Inst Invest Desarrollo Forestal INDEFOR, Fac Cienclas Forestales & Ambientales
48 Serv Ecosistemicosy Cambio Climat
49 Iwokrama International Centre for Rainforest Conservation and Development
50 Inst Ciencias Nat
51 MPEG - Museu Paraense Emílio Goeldi [Belém, Brésil]
52 UFRA - Universidade Federal Rural da Amazônia
53 DG Joint Res Ctr, Inst Environm & Sustainabil
54 Naturalis Biodiversity Center [Leiden]
55 Ecol & Biodivers Grp
56 Museo de Historia Natural Noel Kempff Mercado [Bolivie]
57 School of Earth and Environmental Sciences [Australia]
58 Sch Marine & Trop Biol
59 University of Wisconsin-Madison
60 Smithsonian Tropical Research Institute
61 Van der Hout Forestry Consulting
62 Univ Estadual
63 Inst Invest Desarrollo Forestal INDEFOR, Fac Cienclas Forestales & Ambientales,
O L Phillips
  • Fonction : Auteur
E Gloor
  • Fonction : Auteur
T R Baker
  • Fonction : Auteur
C V Castilho
  • Fonction : Auteur
Jérome Chave
F Cornejo Valverde
  • Fonction : Auteur
A Di Fiore
  • Fonction : Auteur
S Fauset
  • Fonction : Auteur
E S Grahame
  • Fonction : Auteur
N Groot
  • Fonction : Auteur
Bruno Hérault
H Keeling
  • Fonction : Auteur
T J Killeen
  • Fonction : Auteur
J Peacock
A Rudas
  • Fonction : Auteur
M Schwarz
  • Fonction : Auteur
J Talbot
  • Fonction : Auteur
J Terborgh
  • Fonction : Auteur
S A Vieira
  • Fonction : Auteur
R J Zagt
  • Fonction : Auteur

Résumé

Atmospheric carbon dioxide records indicate that the land surface has acted as a strong global carbon sink over recent decades, with a substantial fraction of this sink probably located in the tropics, particularly in the Amazon. Nevertheless, it is unclear how the terrestrial carbon sink will evolve as climate and atmospheric composition continue to change. Here we analyse the historical evolution of the biomass dynamics of the Amazon rainforest over three decades using a distributed network of 321 plots. While this analysis confirms that Amazon forests have acted as a long-term net biomass sink, we find a long-term decreasing trend of carbon accumulation. Rates of net increase in above-ground biomass declined by one-third during the past decade compared to the 1990s. This is a consequence of growth rate increases levelling off recently, while biomass mortality persistently increased throughout, leading to a shortening of carbon residence times. Potential drivers for the mortality increase include greater climate variability, and feedbacks of faster growth on mortality, resulting in shortened tree longevity. The observed decline of the Amazon sink diverges markedly from the recent increase in terrestrial carbon uptake at the global scale, and is contrary to expectations based on models.

Dates et versions

hal-01204223 , version 1 (23-09-2015)

Identifiants

Citer

R J W Brienen, O L Phillips, T R Feldpausch, E Gloor, T R Baker, et al.. Long-term decline of the Amazon carbon sink. Nature, 2015, 519 (7543), pp.344-348. ⟨10.1038/nature14283⟩. ⟨hal-01204223⟩
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