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Online data accompanying Niinemets Ü, Zhang Z (2026) Pine photosynthesis: needle longevity, structural and physiological controls, needle and tree age dependent changes and plasticity. In: Johnson DA, Domec JC, Niinemets Ü (eds.) Physiology and ecology of Pinus, Tree Physiology. Springer, Berlin, in press

Abstrakt

Niinemets and Zhang (2026) provided a global meta-analysis of variation in needle structural, chemical and physiological traits in pine (Pinus) species. This online resource includes the full dataset used in the meta-analysis together with explanations of data standardization and calculation formula. The dataset compiles species traits, site and tree metadata, measurement conditions, and physiological, structural, and chemical needle variables for a meta-analysis of Pinus needle structure–function relationships. Data are organized into major categories and subcategories covering species information, sampling details, measurement system characteristics, and derived functional traits. The compiled data were harmonized, including expression of area based traits per unit projected leaf area, standardization of maximum carboxylase activity of Rubisco (Vcmax) to 25 °C using a common set of Rubisco kinetic characteristics, normalization of photosynthetic capacity (light-saturated net assimilation rate, Amax) to common intercellular CO₂ concentration and 25 °C. The included MS Excel file, pine-metaanalysis-data-file-Niinemets-and-Zhang-2026.xlsx, contains all formulas and conversion factors used. Highlighted traits include needle longevity, needle age, tree height, needle nitrogen content, needle dry mass per projected area, Amax, Vcmax, photosynthetic nitrogen use efficiency, mesophyll conductance, and photosynthetic limitation components. The online data resource consists of four files, the contents of which are described in read.me-Niinemets-and-Zhang-2026.docx.

Kirjeldus

This work was supported by the Estonian Research Council PRG2207 „Spectrum of constitutive and induced plant herbivory defenses under globally rising CO2“ (1.01.2024-31.12.2029) and the Estonian Ministry of Education and Research through the Center of Excellence “Agroecology and New Crops in Future Climates” T240004PKTT / TK200U1 (1.01.2024−31.12.2031).

Märksõnad

data standardization, interspecific variability, leaf dry mass per unit area, leaf longevity, nitrogen content, Pinus, photosynthesis, structure-function relationships, data

Viide

Niinemets, Ü., & Ziyan, Z. (2026). Online data accompanying Niinemets Ü, Zhang Z (2026) Pine photosynthesis: needle longevity, structural and physiological controls, needle and tree age dependent changes and plasticity. In: Johnson DA, Domec JC, Niinemets Ü (eds.) Physiology and ecology of Pinus, Tree Physiology. Springer, Berlin, in press [Data set]. Estonian University of Life Sciences. https://doi.org/10.15159/EDS.DT.26.02

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