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Current methods to study relations between stem respiration and stem growth have been hampered by problems in quantifying stem growth from dendrometer measurements, particularly on a daily time scale. This is mainly due to the water-related influences within these measurements that mask growth. A previously published model was used to remove water-related influences from measured radial stem variations to reveal a daily radial growth signal (ΔˆGm). We analysed the intra- and inter-annual relations between ΔˆGm and estimated growth respiration rates (Rg) on a daily scale for 5 years. Results showed that Rg was weakly correlated to stem growth prior to tracheid formation, but was significant during the early summer. In the late summer, the correlation decreased slightly relative to the early summer. A 1-day time lag was found of ΔˆGm preceding Rg. Using wavelet analysis and measurements from eddy covariance, it was found that Rg followed gross primary production and temperature with a 2 and 3 h time lag, respectively.This study shows that further in-depth analysis of in-situ growth and growth respiration dynamics is greatly needed, with a focus on cellular respiration at specific developmental stages, its woody tissue costs and linkages to source–sink processes and environmental drivers.
Originalspråkengelska
TidskriftTree Physiology
Volym38
Utgåva9
Sidor (från-till)1356-1370
Antal sidor15
ISSN0829-318X
DOI
StatusPublicerad - sep 2018
MoE-publikationstypA1 Tidskriftsartikel-refererad

Vetenskapsgrenar

  • 4112 Skogsvetenskap

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@article{b807f346e6514570af4f196b5587463c,
title = "Linking stem growth respiration to the seasonal course of stem growth and GPP of Scots pine",
abstract = "Current methods to study relations between stem respiration and stem growth have been hampered by problems in quantifying stem growth from dendrometer measurements, particularly on a daily time scale. This is mainly due to the water-related influences within these measurements that mask growth. A previously published model was used to remove water-related influences from measured radial stem variations to reveal a daily radial growth signal (ΔˆGm). We analysed the intra- and inter-annual relations between ΔˆGm and estimated growth respiration rates (Rg) on a daily scale for 5 years. Results showed that Rg was weakly correlated to stem growth prior to tracheid formation, but was significant during the early summer. In the late summer, the correlation decreased slightly relative to the early summer. A 1-day time lag was found of ΔˆGm preceding Rg. Using wavelet analysis and measurements from eddy covariance, it was found that Rg followed gross primary production and temperature with a 2 and 3 h time lag, respectively.This study shows that further in-depth analysis of in-situ growth and growth respiration dynamics is greatly needed, with a focus on cellular respiration at specific developmental stages, its woody tissue costs and linkages to source–sink processes and environmental drivers.",
keywords = "dendrometers, eddy covariance, GPP, growth, growth efficiency, radial variations, respiration, CARBON-DIOXIDE EFFLUX, CO2 EFFLUX, MAINTENANCE RESPIRATION, RADIAL GROWTH, SAP-FLOW, CAMBIAL ACTIVITY, WATER-STRESS, RESPIRED CO2, FOREST TREES, XYLEM, 4112 Forestry",
author = "Tommy Chan and Frank Berninger and Pasi Kolari and Eero Nikinmaa and Teemu H{\"o}ltt{\"a}",
year = "2018",
month = "9",
doi = "10.1093/treephys/tpy040",
language = "English",
volume = "38",
pages = "1356--1370",
journal = "Tree Physiology",
issn = "0829-318X",
publisher = "Oxford University Press",
number = "9",

}

Linking stem growth respiration to the seasonal course of stem growth and GPP of Scots pine. / Chan, Tommy; Berninger, Frank; Kolari, Pasi; Nikinmaa, Eero; Hölttä, Teemu.

I: Tree Physiology, Vol. 38, Nr. 9, 09.2018, s. 1356-1370.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

TY - JOUR

T1 - Linking stem growth respiration to the seasonal course of stem growth and GPP of Scots pine

AU - Chan, Tommy

AU - Berninger, Frank

AU - Kolari, Pasi

AU - Nikinmaa, Eero

AU - Hölttä, Teemu

PY - 2018/9

Y1 - 2018/9

N2 - Current methods to study relations between stem respiration and stem growth have been hampered by problems in quantifying stem growth from dendrometer measurements, particularly on a daily time scale. This is mainly due to the water-related influences within these measurements that mask growth. A previously published model was used to remove water-related influences from measured radial stem variations to reveal a daily radial growth signal (ΔˆGm). We analysed the intra- and inter-annual relations between ΔˆGm and estimated growth respiration rates (Rg) on a daily scale for 5 years. Results showed that Rg was weakly correlated to stem growth prior to tracheid formation, but was significant during the early summer. In the late summer, the correlation decreased slightly relative to the early summer. A 1-day time lag was found of ΔˆGm preceding Rg. Using wavelet analysis and measurements from eddy covariance, it was found that Rg followed gross primary production and temperature with a 2 and 3 h time lag, respectively.This study shows that further in-depth analysis of in-situ growth and growth respiration dynamics is greatly needed, with a focus on cellular respiration at specific developmental stages, its woody tissue costs and linkages to source–sink processes and environmental drivers.

AB - Current methods to study relations between stem respiration and stem growth have been hampered by problems in quantifying stem growth from dendrometer measurements, particularly on a daily time scale. This is mainly due to the water-related influences within these measurements that mask growth. A previously published model was used to remove water-related influences from measured radial stem variations to reveal a daily radial growth signal (ΔˆGm). We analysed the intra- and inter-annual relations between ΔˆGm and estimated growth respiration rates (Rg) on a daily scale for 5 years. Results showed that Rg was weakly correlated to stem growth prior to tracheid formation, but was significant during the early summer. In the late summer, the correlation decreased slightly relative to the early summer. A 1-day time lag was found of ΔˆGm preceding Rg. Using wavelet analysis and measurements from eddy covariance, it was found that Rg followed gross primary production and temperature with a 2 and 3 h time lag, respectively.This study shows that further in-depth analysis of in-situ growth and growth respiration dynamics is greatly needed, with a focus on cellular respiration at specific developmental stages, its woody tissue costs and linkages to source–sink processes and environmental drivers.

KW - dendrometers

KW - eddy covariance

KW - GPP

KW - growth

KW - growth efficiency

KW - radial variations

KW - respiration

KW - CARBON-DIOXIDE EFFLUX

KW - CO2 EFFLUX

KW - MAINTENANCE RESPIRATION

KW - RADIAL GROWTH

KW - SAP-FLOW

KW - CAMBIAL ACTIVITY

KW - WATER-STRESS

KW - RESPIRED CO2

KW - FOREST TREES

KW - XYLEM

KW - 4112 Forestry

U2 - 10.1093/treephys/tpy040

DO - 10.1093/treephys/tpy040

M3 - Article

VL - 38

SP - 1356

EP - 1370

JO - Tree Physiology

JF - Tree Physiology

SN - 0829-318X

IS - 9

ER -