TY - JOUR
T1 - Productivity and carbon allocation in a tropical montane cloud forest in the Peruvian Andes
AU - Girardin, Cécile A.J.
AU - Espejob, Javier E.Silva
AU - Doughty, Christopher E.
AU - Huasco, Walter Huaraca
AU - Metcalfe, Dan B.
AU - Durand-Baca, Liliana
AU - Marthews, Toby R.
AU - Aragao, Luiz E.O.C.
AU - Farfán-Rios, William
AU - García-Cabrera, Karina
AU - Halladay, Katherine
AU - Fisher, Joshua B.
AU - Galiano-Cabrera, Darcy F.
AU - Huaraca-Quispe, Lidia P.
AU - Alzamora-Taype, Ivonne
AU - Eguiluz-Mora, Luzmila
AU - -Revilla, Norma Salinas
AU - Silman, Miles R.
AU - Meir, Patrick
AU - Malhi, Yadvinder
PY - 2014
Y1 - 2014
N2 - 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 Kosñipata 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.
AB - 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 Kosñipata 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.
KW - Andes
KW - carbon use efficiency
KW - ecophysiology
KW - elevation gradient
KW - net primary productivity
KW - respiration
KW - solar radiation
KW - tropical montane forest
UR - http://www.scopus.com/inward/record.url?scp=84893260373&partnerID=8YFLogxK
U2 - 10.1080/17550874.2013.820222
DO - 10.1080/17550874.2013.820222
M3 - Article
AN - SCOPUS:84893260373
SN - 1755-0874
VL - 7
SP - 107
EP - 123
JO - Plant Ecology and Diversity
JF - Plant Ecology and Diversity
IS - 1-2
ER -