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Productivity and carbon allocation in a tropical montane cloud forest in the Peruvian Andes

Girardin, Cecile A. J.; Silva Espejob, Javier E.; Doughty, Christopher E.; Huaraca Huasco, Walter; Metcalfe, Dan LU ; Durand-Baca, Liliana; Marthews, Toby R.; Aragao, Luiz E. O. C.; Farfan-Rios, William and Garcia-Cabrera, Karina, et al. (2014) In Plant Ecology & Diversity 7(1-2). p.107-123
Abstract
Background: The slopes of the eastern Andes harbour some of the highest biodiversity on Earth and a high proportion of endemic species. However, there have been only a few and limited descriptions of carbon budgets in tropical montane forest regions. Aims: We present the first comprehensive data on the production, allocation and cycling of carbon for two high elevation (ca. 3000 m) tropical montane cloud forest plots in the Kosnipata Valley, Peruvian Andes. Methods: We measured the main components and seasonal variation of net primary productivity (NPP), autotrophic (R-a) and heterotrophic (R-h) respiration to estimate gross primary productivity (GPP) and carbon use efficiency (CUE) in two 1-ha plots. Results: NPP for the two plots was... (More)
Background: The slopes of the eastern Andes harbour some of the highest biodiversity on Earth and a high proportion of endemic species. However, there have been only a few and limited descriptions of carbon budgets in tropical montane forest regions. Aims: We present the first comprehensive data on the production, allocation and cycling of carbon for two high elevation (ca. 3000 m) tropical montane cloud forest plots in the Kosnipata Valley, Peruvian Andes. Methods: We measured the main components and seasonal variation of net primary productivity (NPP), autotrophic (R-a) and heterotrophic (R-h) respiration to estimate gross primary productivity (GPP) and carbon use efficiency (CUE) in two 1-ha plots. Results: NPP for the two plots was estimated to be 7.05 +/- 0.39 and 8.04 +/- 0.47 Mg C ha(-1) year(-1), GPP to be 22.33 +/- 2.23 and 26.82 +/- 2.97 Mg C ha(-1) year(-1) and CUE was 0.32 +/- 0.04 and 0.30 +/- 0.04. Conclusions: We found strong seasonality in NPP and moderate seasonality of R-a, suggesting that forest NPP is driven by changes in photosynthesis and highlighting the importance of variation in solar radiation. Our findings imply that trees invest more in biomass production in the cooler season with lower solar radiation and more in maintenance during the warmer and high solar radiation period. (Less)
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@article{d69bbf04-7660-45b3-9312-155cee1adbfb,
  abstract     = {Background: The slopes of the eastern Andes harbour some of the highest biodiversity on Earth and a high proportion of endemic species. However, there have been only a few and limited descriptions of carbon budgets in tropical montane forest regions. Aims: We present the first comprehensive data on the production, allocation and cycling of carbon for two high elevation (ca. 3000 m) tropical montane cloud forest plots in the Kosnipata Valley, Peruvian Andes. Methods: We measured the main components and seasonal variation of net primary productivity (NPP), autotrophic (R-a) and heterotrophic (R-h) respiration to estimate gross primary productivity (GPP) and carbon use efficiency (CUE) in two 1-ha plots. Results: NPP for the two plots was estimated to be 7.05 +/- 0.39 and 8.04 +/- 0.47 Mg C ha(-1) year(-1), GPP to be 22.33 +/- 2.23 and 26.82 +/- 2.97 Mg C ha(-1) year(-1) and CUE was 0.32 +/- 0.04 and 0.30 +/- 0.04. Conclusions: We found strong seasonality in NPP and moderate seasonality of R-a, suggesting that forest NPP is driven by changes in photosynthesis and highlighting the importance of variation in solar radiation. Our findings imply that trees invest more in biomass production in the cooler season with lower solar radiation and more in maintenance during the warmer and high solar radiation period.},
  author       = {Girardin, Cecile A. J. and Silva Espejob, Javier E. and Doughty, Christopher E. and Huaraca Huasco, Walter and Metcalfe, Dan and Durand-Baca, Liliana and Marthews, Toby R. and Aragao, Luiz E. O. C. and Farfan-Rios, William and Garcia-Cabrera, Karina and Halladay, Katherine and Fisher, Joshua B. and Galiano-Cabrera, Darcy F. and Huaraca-Quispe, Lidia P. and Alzamora-Taype, Ivonne and Eguiluz-Mora, Luzmila and Salinas-Revilla, Norma and Silman, Miles R. and Meir, Patrick and Malhi, Yadvinder},
  issn         = {1755-0874},
  keyword      = {Andes,ecophysiology,net primary productivity,carbon use efficiency,respiration,elevation gradient,tropical montane forest,solar,radiation},
  language     = {eng},
  number       = {1-2},
  pages        = {107--123},
  publisher    = {Taylor & Francis},
  series       = {Plant Ecology & Diversity},
  title        = {Productivity and carbon allocation in a tropical montane cloud forest in the Peruvian Andes},
  url          = {http://dx.doi.org/10.1080/17550874.2013.820222},
  volume       = {7},
  year         = {2014},
}