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

Cécile A.J. Girardin, Javier E.Silva Espejob, Christopher E. Doughty, Walter Huaraca Huasco, Dan B. Metcalfe, Liliana Durand-Baca, Toby R. Marthews, Luiz E.O.C. Aragao, William Farfán-Rios, Karina García-Cabrera, Katherine Halladay, Joshua B. Fisher, Darcy F. Galiano-Cabrera, Lidia P. Huaraca-Quispe, Ivonne Alzamora-Taype, Luzmila Eguiluz-Mora, Norma Salinas -Revilla, Miles R. Silman, Patrick Meir, Yadvinder Malhi

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

58 Citas (Scopus)

Resumen

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.

Idioma originalInglés
Páginas (desde-hasta)107-123
Número de páginas17
PublicaciónPlant Ecology and Diversity
Volumen7
N.º1-2
DOI
EstadoPublicada - 2014
Publicado de forma externa

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