, Volume 145, Issue 3, pp 454–461 | Cite as

Wood growth patterns of Macrolobium acaciifolium (Benth.) Benth. (Fabaceae) in Amazonian black-water and white-water floodplain forests

  • Jochen Schöngart
  • Maria Teresa F. Piedade
  • Florian Wittmann
  • Wolfgang J. Junk
  • Martin Worbes
Ecosystem Ecology


Macrolobium acaciifolium (Benth.) Benth. (Fabaceae) is a dominant legume tree species occurring at low elevations of nutrient-poor black-water (igapó) and nutrient-rich white-water floodplain forests (várzea) of Amazonia. As a consequence of the annual long-term flooding this species forms distinct annual tree rings allowing dendrochronological analyses. From both floodplain types in Central Amazonia we sampled cores from 20 large canopy trees growing at identical elevations with a flood-height up to 7 m. We determined tree age, wood density (WD) and mean radial increment (MRI) and synchronized ring-width patterns of single trees to construct tree-ring chronologies for every study site. Maximum tree age found in the igapó was more than 500 years, contrary to the várzea with ages not older than 200 years. MRI and WD were significantly lower in the igapó (MRI=1.52±0.38 mm year−1, WD=0.39±0.05 g cm−3) than in the várzea (MRI=2.66±0.67 mm year−1, WD=0.45±0.03 g cm−3). In both floodplain forests we developed tree-ring chronologies comprising the period 1857–2003 (n=7 trees) in the várzea and 1606–2003 (n=13 trees) in the igapó. The ring-width in both floodplain forests was significantly correlated with the length of the terrestrial phase (vegetation period) derived from the daily recorded water level in the port of Manaus since 1903. In both chronologies we found increased wood growth during El Niño events causing negative precipitation anomalies and a lower water discharge in Amazonian rivers, which leads to an extension of the terrestrial phase. The climate signal of La Niña was not evident in the dendroclimatic proxies.


Dendrochronology Tree age Radial increment Wood density ENSO 



This study was financed by the INPA/Max-Planck project. We thank the Instituto de Desenvolvimento Sustentável Mamirauá (IDSM) in Tefé for the logistical support to realize the fieldwork. We also thank the referee’s valuable comments to improve the manuscript. The authors declare that the experiments comply with the current legislation of the Federal Republic of Brazil.


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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Jochen Schöngart
    • 1
    • 2
  • Maria Teresa F. Piedade
    • 2
  • Florian Wittmann
    • 1
  • Wolfgang J. Junk
    • 1
  • Martin Worbes
    • 3
  1. 1.Max-Planck-Institute for LimnologyWG Tropical EcologyPlönGermany
  2. 2.Instituto Nacional de Pesquisas da Amazônia/Max-Planck ProjectManaus-AMBrazil
  3. 3.Institute of Agronomy in the TropicsUniversity of GöttingenGöttingenGermany

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