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https://hdl.handle.net/10316/44360
Título: | Woody biomass production lags stem-girth increase by over one month in coniferous forests | Autor: | Cuny, Henri E. Rathgeber, Cyrille B. K. Frank, David Fonti, Patrick Mäkinen, Harri Prislan, Peter Rossi, Sergio del Castillo, Edurne Martinez Campelo, Filipe Vavrčík, Hanuš Camarero, Jesus Julio Bryukhanova, Marina V. Jyske, Tuula Gričar, Jožica Gryc, Vladimír De Luis, Martin Vieira, Joana Čufar, Katarina Kirdyanov, Alexander V. Oberhuber, Walter Treml, Vaclav Huang, Jian-Guo Li, Xiaoxia Swidrak, Irene Deslauriers, Annie Liang, Eryuan Nöjd, Pekka Gruber, Andreas Nabais, Cristina Morin, Hubert Krause, Cornelia King, Gregory Fournier, Meriem |
Data: | 2015 | Projeto: | FPS COST Action STReESS (FP1106) | Título da revista, periódico, livro ou evento: | Nature Plants | Volume: | 1 | Número: | 11 | Resumo: | Wood is the main terrestrial biotic reservoir for long-term carbon sequestration(1), and its formation in trees consumes around 15% of anthropogenic carbon dioxide emissions each year(2). However, the seasonal dynamics of woody biomass production cannot be quantified from eddy covariance or satellite observations. As such, our understanding of this key carbon cycle component, and its sensitivity to climate, remains limited. Here, we present high-resolution cellular based measurements of wood formation dynamics in three coniferous forest sites in northeastern France, performed over a period of 3 years. We show that stem woody biomass production lags behind stem-girth increase by over 1 month. We also analyse more general phenological observations of xylem tissue formation in Northern Hemisphere forests and find similar time lags in boreal, temperate, subalpine and Mediterranean forests. These time lags question the extension of the equivalence between stem size increase and woody biomass production to intra-annual time scales(3, 4, 5, 6). They also suggest that these two growth processes exhibit differential sensitivities to local environmental conditions. Indeed, in the well-watered French sites the seasonal dynamics of stem-girth increase matched the photoperiod cycle, whereas those of woody biomass production closely followed the seasonal course of temperature. We suggest that forecasted changes in the annual cycle of climatic factors(7) may shift the phase timing of stem size increase and woody biomass production in the future. | URI: | https://hdl.handle.net/10316/44360 | DOI: | 10.1038/nplants.2015.160 10.1038/nplants.2015.160 |
Direitos: | embargoedAccess |
Aparece nas coleções: | I&D CFE - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Cuny et al_2015_Nature Plants.pdf | 612.61 kB | Adobe PDF | Ver/Abrir |
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