skip to main content

DOE PAGESDOE PAGES

Title: Corrigendum to "Predicting biomass of hyperdiverse and structurally complex central Amazonian forests — a virtual approach using extensive field data" Published in Biogeosciences, 13, 1553-1570, 2016

Old-growth forests are subject to substantial changes in structure and species composition due to the intensification of human activities, gradual climate change and extreme weather events. Trees store ca. 90% of the total aboveground biomass (AGB) in tropical forests and precise tree biomass estimation models are crucial for management and conservation. In the central Amazon, predicting AGB at large spatial scales is a challenging task due to the heterogeneity of successional stages, high tree species diversity and inherent variations in tree allometry and architecture. We parameterized generic AGB estimation models applicable across species and a wide range of structural and compositional variation related to species sorting into height layers as well as frequent natural disturbances. We used 727 trees (diameter at breast height ≥5 cm) from 101 genera and at least 135 species harvested in a contiguous forest near Manaus, Brazil. Sampling from this data set we assembled six scenarios designed to span existing gradients in floristic composition and size distribution in order to select models that best predict AGB at the landscape level across successional gradients. We found that good individual tree model fits do not necessarily translate into reliable predictions of AGB at the landscape level. We observedmore » systematic biases ranging from -31% (pantropical) to +39 %, with root-mean-square error (RMSE) values of up to 130-Mg ha -1 (pantropical), when predicting AGB (dry mass) over scenarios using our different models and an available pantropical model. Our first and second best models had both low mean biases (0.8 and 3.9 %, respectively) and RMSE (9.4 and 18.6 Mg ha -1) when applied over scenarios. Predicting biomass correctly at the landscape level in hyperdiverse and structurally complex tropical forests, especially allowing good performance at the margins of data availability for model construction/calibration, requires the inclusion of predictors that express inherent variations in species architecture. Furthermore, the model of interest should comprise the floristic composition and size-distribution variability of the target forest, implying that even generic global or pantropical biomass estimation models can lead to strong biases. Reliable biomass assessments for the Amazon basin (i.e., secondary forests) still depend on the collection of allometric data at the local/regional scale and forest inventories including species-specific attributes, which are often unavailable or estimated imprecisely in most regions.« less
Authors:
 [1] ;  [2] ;  [3] ;  [2] ;  [2] ;  [2] ;  [2] ;  [4] ;  [5] ;  [6] ;  [7] ;  [8]
  1. Univ. of Leipzig (Germany). Special Botany and Functional Biodiversity; Max Planck Society, Jena (Germany). Max Planck Inst. for Biogeochemistry; National Inst. of Amazonian Research, Manaus (Brazil)
  2. National Inst. of Amazonian Research, Manaus (Brazil)
  3. Max Planck Society, Jena (Germany). Max Planck Inst. for Biogeochemistry
  4. Univ. of California, Berkeley, CA (United States). Geography Dept.
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Climate Sciences Dept.
  6. Univ. of Leipzig (Germany). Special Botany and Functional Biodiversity
  7. Univ. of Leipzig (Germany). Special Botany and Functional Biodiversity; Industrial Univ. of Santander, Bucaramanga (Columbia). School of Biology
  8. Univ. of Leipzig (Germany). Special Botany and Functional Biodiversity; German Centre for Integrative Biodiversity Research (iDiv), Leipzig (Germany); Max Planck Society, Jena (Germany). Max Planck Inst. for Biogeochemistry
Publication Date:
Grant/Contract Number:
AC02-05CH11231
Type:
Accepted Manuscript
Journal Name:
Biogeosciences (Online)
Additional Journal Information:
Journal Name: Biogeosciences (Online); Journal Volume: 13; Journal Issue: 5; Journal ID: ISSN 1726-4189
Publisher:
European Geosciences Union
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES
OSTI Identifier:
1378098