Thermal acclimation of stem respiration implies a weaker carbon-climate feedback

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F25%3A103171" target="_blank" >RIV/60460709:41320/25:103171 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.science.org/doi/epdf/10.1126/science.adr9978?src=getftr&utm_source=clarivate&getft_integrator=clarivate" target="_blank" >https://www.science.org/doi/epdf/10.1126/science.adr9978?src=getftr&utm_source=clarivate&getft_integrator=clarivate</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1126/science.adr9978" target="_blank" >10.1126/science.adr9978</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermal acclimation of stem respiration implies a weaker carbon-climate feedback

Popis výsledku v původním jazyce

The efflux of carbon dioxide (CO2) from woody stems, a proxy for stem respiration, is a critical carbon flux from ecosystems to the atmosphere, which increases with temperature on short timescales. However, plants acclimate their respiratory response to temperature on longer timescales, potentially weakening the carbon-climate feedback. The magnitude of this acclimation is uncertain despite its importance for predicting future climate change. We develop an optimality-based theory dynamically linking stem respiration with leaf water supply to predict its thermal acclimation. We show that the theory accurately reproduces observations of spatial and seasonal change. We estimate the global value for current annual stem CO2 efflux as 27.4 +/- 5.9 PgC. By 2100, incorporating thermal acclimation reduces projected stem respiration without considering acclimation by 24 to 46%, thus reducing land ecosystem carbon emissions.

Název v anglickém jazyce

Thermal acclimation of stem respiration implies a weaker carbon-climate feedback

Popis výsledku anglicky

The efflux of carbon dioxide (CO2) from woody stems, a proxy for stem respiration, is a critical carbon flux from ecosystems to the atmosphere, which increases with temperature on short timescales. However, plants acclimate their respiratory response to temperature on longer timescales, potentially weakening the carbon-climate feedback. The magnitude of this acclimation is uncertain despite its importance for predicting future climate change. We develop an optimality-based theory dynamically linking stem respiration with leaf water supply to predict its thermal acclimation. We show that the theory accurately reproduces observations of spatial and seasonal change. We estimate the global value for current annual stem CO2 efflux as 27.4 +/- 5.9 PgC. By 2100, incorporating thermal acclimation reduces projected stem respiration without considering acclimation by 24 to 46%, thus reducing land ecosystem carbon emissions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10618 - Ecology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

SCIENCE

ISSN

0036-8075

e-ISSN

0036-8075

Svazek periodika

388

Číslo periodika v rámci svazku

6750

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

5

Strana od-do

984-988

Kód UT WoS článku

001500261900001

EID výsledku v databázi Scopus

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