Tree Biomass Sensitivity to Ozone Exposure: Insights From a Decade of Free‐Air Experiments
Created March 24, 2026
Updated on March 25, 2026
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Language
English
MainTitle
Tree Biomass Sensitivity to Ozone Exposure: Insights From a Decade of Free‐Air Experiments
Original ids
10.1111/gcb.70728; 41608815; PMC12853240
Type
publication
bestAccessRight
OPEN
countries
null
Creator/Author
Full name
Annesha Ghosh, orcid: 0009-0005-5510-141x ; Andrea Viviano, orcid: 0000-0002-2970-3389 ; Elena Paoletti, orcid: 0000-0001-5324-7769 ; Yasutomo Hoshika, orcid: 0000-0002-5263-2945 ; Elena Marra, orcid: 0000-0001-6659-5033 ; Jacopo Manzini, orcid: 0000-0002-1008-8080 ; Cesare Garosi, orcid: 0000-0001-7636-8942 ; Matheus Casarini Siqueira, orcid: 0000-0001-7776-3805 ; Barbara B. Moura, orcid: 0000-0001-6063-146x
Other
Description
<jats:title>ABSTRACT</jats:title> <jats:p> Tropospheric ozone (O <jats:sub>3</jats:sub> ) is a pervasive stressor that impairs forest biomass and alters carbon allocation strategies. This study assessed biomass responses across 17 woody taxa under free‐air controlled exposure (FACE), integrating a decade of experiments conducted with an analogous exposure regime applied to deciduous and evergreen species. The analysis provided a comparative evaluation of existing flux‐based metrics. Statistical analyses revealed consistent reductions in relative total (RTB), aboveground (RTAB), and belowground (RTBB) biomass with increasing O <jats:sub>3</jats:sub> uptake in terms of phytotoxic ozone dose (POD <jats:sub>1</jats:sub> mmol m <jats:sup>−2</jats:sup> ). Deciduous species reached the 4% biomass reduction threshold (CL <jats:sub>4</jats:sub> ) at lower POD <jats:sub>1</jats:sub> levels for RTBB (10.21), RTAB (13.16), and RTB (10.77) and displayed relatively small values for RTBB (2.75), RTAB (5.70), and RTB (3.31), where represents the increment in O <jats:sub>3</jats:sub> uptake required to reach the CL <jats:sub>4</jats:sub> threshold. In contrast, evergreen species showed higher CL <jats:sub>4</jats:sub> for RTBB (11.48), RTAB (15.40), and RTB (13.86) and larger values for RTBB (8.40), RTAB (12.32), and RTB (10.78), reflecting a slower biomass decline. Contrasting relationships suggest that leaf habit‐specific patterns are associated with divergent carbon allocation strategies under O <jats:sub>3</jats:sub> stress. In deciduous species,
Publication Date
2026-01-29
Publisher
Wiley
Subjects
Air Pollutants; Ozone; Biomass; Trees
Publication
Name
Global Change Biology
Publication
Article
issnOnline
1365-2486
issnPrinted
1354-1013
vol
32
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Last Updated
March 25, 2026, 10:50 (UTC)
Created
March 24, 2026, 23:25 (UTC)
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