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Leaf-level photosynthetic capacity in lowland Amazonian and high-elevation Andean tropical moist forests of Peru

التفاصيل البيبلوغرافية
العنوان: Leaf-level photosynthetic capacity in lowland Amazonian and high-elevation Andean tropical moist forests of Peru
المؤلفون: Bahar, Nur H.A., Ishida, Francoise Yoko, Weerasinghe, Lasantha K., Guerrieri, Rossella, O'Sullivan, Odhran S., Bloomfield, Keith J., Asner, Gregory P., Martin, Roberta E., Lloyd, Jon, Malhi, Yadvinder Singh, Phillips, Oliver L., Meir, Patrick W., Salinas, Norma, Cosio, Eric G., null, Tomas, Quesada, Carlos Alberto, Sinca, Felipe, Escudero Vega, Alberto, Zuloaga Ccorimanya, Paola P., Jhon, Del Aguila Pasquel, Quispe Huaypar, Katherine, Cuba-Torres, Israel, Butrón Loayza, Rosalbina, Pelaez-Tapia, Yulina, Huamán-Ovalle, Judit, Long, Benedict M., Evans, John R., Atkin, Owen K.
بيانات النشر: New Phytologist
سنة النشر: 2017
مصطلحات موضوعية: Abundance, Carbon Dioxide, Carboxylic Acid, Elevation, Enzyme Activity, Forest Ecosystem, Leaf Area, Moisture Content, Nitrogen, Phosphorus, Photosynthesis, Temperature Effect, Tropical Forest, Amazonas, Andes, Brasil, Peru, Ribulose-bisphosphate Carboxylase, Altitude, Anatomy And Histology, Biological Model, Chemistry, Enzyme Assay, Forest, Humidity, Kinetics, Metabolism, Physiology, Plant Leaf, Species Difference
الوصف: We examined whether variations in photosynthetic capacity are linked to variations in the environment and/or associated leaf traits for tropical moist forests (TMFs) in the Andes/western Amazon regions of Peru. We compared photosynthetic capacity (maximal rate of carboxylation of Rubisco (Vcmax), and the maximum rate of electron transport (Jmax)), leaf mass, nitrogen (N) and phosphorus (P) per unit leaf area (Ma, Na and Pa, respectively), and chlorophyll from 210 species at 18 field sites along a 3300-m elevation gradient. Western blots were used to quantify the abundance of the CO2-fixing enzyme Rubisco. Area- and N-based rates of photosynthetic capacity at 25°C were higher in upland than lowland TMFs, underpinned by greater investment of N in photosynthesis in high-elevation trees. Soil [P] and leaf Pa were key explanatory factors for models of area-based Vcmax and Jmax but did not account for variations in photosynthetic N-use efficiency. At any given Na and Pa, the fraction of N allocated to photosynthesis was higher in upland than lowland species. For a small subset of lowland TMF trees examined, a substantial fraction of Rubisco was inactive. These results highlight the importance of soil- and leaf-P in defining the photosynthetic capacity of TMFs, with variations in N allocation and Rubisco activation state further influencing photosynthetic rates and N-use efficiency of these critically important forests. © 2016 The Authors. New Phytologist © 2016 New Phytologist Trust
نوع الوثيقة: article in journal/newspaper
وصف الملف: application/pdf
اللغة: English
Relation: Volume 214, Número 3, Pags. 1002-1018; https://repositorio.inpa.gov.br/handle/1/15740
DOI: 10.1111/nph.14079
الاتاحة: https://repositorio.inpa.gov.br/handle/1/15740
https://doi.org/10.1111/nph.14079
Rights: Attribution-NonCommercial-NoDerivs 3.0 Brazil ; http://creativecommons.org/licenses/by-nc-nd/3.0/br/
رقم الانضمام: edsbas.6C98914C
قاعدة البيانات: BASE
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