Advanced

Effect of 7 yr of experimental drought on vegetation dynamics and biomass storage of an eastern Amazonian rainforest

Lola da Costa, Antonio Carlos; Galbraith, David; Almeida, Samuel; Tanaka Portela, Bruno Takeshi; da Costa, Mauricio; de Athaydes Silva Junior, Joao; Braga, Alan P.; de Goncalves, Paulo H. L.; de Oliveira, Alex A. R. and Fisher, Rosie, et al. (2010) In New Phytologist 187(3). p.579-591
Abstract
P>At least one climate model predicts severe reductions of rainfall over Amazonia during this century. Long-term throughfall exclusion (TFE) experiments represent the best available means to investigate the resilience of the Amazon rainforest to such droughts. Results are presented from a 7 yr TFE study at Caxiuana National Forest, eastern Amazonia. We focus on the impacts of the drought on tree mortality, wood production and above-ground biomass. Tree mortality in the TFE plot over the experimental period was 2.5% yr-1, compared with 1.25% yr-1 in a nearby control plot experiencing normal rainfall. Differences in stem mortality between plots were greatest in the largest (> 40 cm diameter at breast height (dbh)) size class (4.1% yr-1... (More)
P>At least one climate model predicts severe reductions of rainfall over Amazonia during this century. Long-term throughfall exclusion (TFE) experiments represent the best available means to investigate the resilience of the Amazon rainforest to such droughts. Results are presented from a 7 yr TFE study at Caxiuana National Forest, eastern Amazonia. We focus on the impacts of the drought on tree mortality, wood production and above-ground biomass. Tree mortality in the TFE plot over the experimental period was 2.5% yr-1, compared with 1.25% yr-1 in a nearby control plot experiencing normal rainfall. Differences in stem mortality between plots were greatest in the largest (> 40 cm diameter at breast height (dbh)) size class (4.1% yr-1 in the TFE and 1.4% yr-1 in the control). Wood production in the TFE plot was c. 30% lower than in the control plot. Together, these changes resulted in a loss of 37.8 +/- 2.0 Mg carbon (C) ha-1 in the TFE plot (2002-2008), compared with no change in the control. These results are remarkably consistent with those from another TFE (at Tapajos National Forest), suggesting that eastern Amazonian forests may respond to prolonged drought in a predictable manner. (Less)
Please use this url to cite or link to this publication:
author
, et al. (More)
(Less)
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Amazon rainforest, biomass, drought, tree mortality, wood production
in
New Phytologist
volume
187
issue
3
pages
579 - 591
publisher
Wiley-Blackwell
external identifiers
  • wos:000280122500007
  • scopus:77954941212
ISSN
1469-8137
DOI
10.1111/j.1469-8137.2010.03309.x
language
English
LU publication?
no
id
b1fe5d35-f6cb-40ab-8688-d44d135a39f9 (old id 4643970)
date added to LUP
2014-09-26 07:44:30
date last changed
2018-07-08 03:17:57
@article{b1fe5d35-f6cb-40ab-8688-d44d135a39f9,
  abstract     = {P>At least one climate model predicts severe reductions of rainfall over Amazonia during this century. Long-term throughfall exclusion (TFE) experiments represent the best available means to investigate the resilience of the Amazon rainforest to such droughts. Results are presented from a 7 yr TFE study at Caxiuana National Forest, eastern Amazonia. We focus on the impacts of the drought on tree mortality, wood production and above-ground biomass. Tree mortality in the TFE plot over the experimental period was 2.5% yr-1, compared with 1.25% yr-1 in a nearby control plot experiencing normal rainfall. Differences in stem mortality between plots were greatest in the largest (> 40 cm diameter at breast height (dbh)) size class (4.1% yr-1 in the TFE and 1.4% yr-1 in the control). Wood production in the TFE plot was c. 30% lower than in the control plot. Together, these changes resulted in a loss of 37.8 +/- 2.0 Mg carbon (C) ha-1 in the TFE plot (2002-2008), compared with no change in the control. These results are remarkably consistent with those from another TFE (at Tapajos National Forest), suggesting that eastern Amazonian forests may respond to prolonged drought in a predictable manner.},
  author       = {Lola da Costa, Antonio Carlos and Galbraith, David and Almeida, Samuel and Tanaka Portela, Bruno Takeshi and da Costa, Mauricio and de Athaydes Silva Junior, Joao and Braga, Alan P. and de Goncalves, Paulo H. L. and de Oliveira, Alex A. R. and Fisher, Rosie and Phillips, Oliver L. and Metcalfe, Dan and Levy, Peter and Meir, Patrick},
  issn         = {1469-8137},
  keyword      = {Amazon rainforest,biomass,drought,tree mortality,wood production},
  language     = {eng},
  number       = {3},
  pages        = {579--591},
  publisher    = {Wiley-Blackwell},
  series       = {New Phytologist},
  title        = {Effect of 7 yr of experimental drought on vegetation dynamics and biomass storage of an eastern Amazonian rainforest},
  url          = {http://dx.doi.org/10.1111/j.1469-8137.2010.03309.x},
  volume       = {187},
  year         = {2010},
}