Mechanistic insights on the responses of plant and ecosystem gas exchange to global environmental change: Lessons from Biosphere. 2

Autor(es)

Gonzalez-Meler, Miquel A. ^[1] ; Rucks, Jessica S. ^[2] ; Aubanell, Gerard ^[3]

Afiliação do(s) autor(es)

^[1] Univ Illinois. Dept Biol Sci

^[2] Univ Illinois. Dept Biol Sci

^[3] Univ Illinois. Dept Biol Sci

• Tipo de documento: Artigo Científico
• Fonte: Plant Science; v. 226, n. SI, p. 14-21, SEP 2014.
• Citações Web of Science: 11

Resumo

Scaling up leaf processes to canopy/ecosystem level fluxes is critical for examining feedbacks between vegetation and climate. Collectively, studies from Biosphere 2 Laboratory have provided important insight of leaf-to-ecosystem investigations of multiple environmental parameters that were not before possible in enclosed or field studies. B2L has been a testing lab for the applicability of new technologies such as spectral approaches to detect spatial and temporal changes in photosynthesis within canopies, or for the development of cavity ring-down isotope applications for ecosystem evapotranspiration. Short and long term changes in atmospheric CO2, drought or temperature allowed for intensive investigation of the interactions between photosynthesis and leaf, soil and ecosystem respiration. Experiments conducted in the rainforest biome have provided some of the most comprehensive dataset to date on the effects of climate change variables on tropical ecosystems. Results from these studies have been later corroborated in natural rainforest ecosystems and have improved the predictive capabilities of models that now show increased resilience of tropics to climate change. Studies of temperature and CO2 effects on ecosystem respiration and its leaf and soil components have helped reconsider the use of simple first-order kinetics for characterizing respiration in models. The B2L also provided opportunities to quantify the rhizosphere priming effect, or establish the relationships between net primary productivity, atmospheric CO2 and isoprene emissions. (C) 2014 Elsevier Ireland Ltd. All rights reserved. (AU)

• Processo FAPESP: 08/58075-8 - Miniface climate-change impact experiment to analyze the effects of elevated CO2 and warming on photosynthesis, gene expression, biochemistry, growth, nutrient dynamics and yield of two contrasting tropical forage species
• Beneficiário: Carlos Alberto Martinez y Huaman
• Linha de fomento: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático