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Determinants of legacy effects in pine trees – implications from an irrigation‐stop experiment

Tree responses to altered water availability range from immediate (e.g. stomatal regulation) to delayed (e.g. crown size adjustment). The interplay of the different response times and processes, and their effects on long‐term whole‐tree performance, however, is hardly understood. Here we investigate...

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Autores principales: Zweifel, Roman, Etzold, Sophia, Sterck, Frank, Gessler, Arthur, Anfodillo, Tommaso, Mencuccini, Maurizio, von Arx, Georg, Lazzarin, Martina, Haeni, Matthias, Feichtinger, Linda, Meusburger, Katrin, Knuesel, Simon, Walthert, Lorenz, Salmon, Yann, Bose, Arun K., Schoenbeck, Leonie, Hug, Christian, De Girardi, Nicolas, Giuggiola, Arnaud, Schaub, Marcus, Rigling, Andreas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7383578/
https://www.ncbi.nlm.nih.gov/pubmed/32259280
http://dx.doi.org/10.1111/nph.16582
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author Zweifel, Roman
Etzold, Sophia
Sterck, Frank
Gessler, Arthur
Anfodillo, Tommaso
Mencuccini, Maurizio
von Arx, Georg
Lazzarin, Martina
Haeni, Matthias
Feichtinger, Linda
Meusburger, Katrin
Knuesel, Simon
Walthert, Lorenz
Salmon, Yann
Bose, Arun K.
Schoenbeck, Leonie
Hug, Christian
De Girardi, Nicolas
Giuggiola, Arnaud
Schaub, Marcus
Rigling, Andreas
author_facet Zweifel, Roman
Etzold, Sophia
Sterck, Frank
Gessler, Arthur
Anfodillo, Tommaso
Mencuccini, Maurizio
von Arx, Georg
Lazzarin, Martina
Haeni, Matthias
Feichtinger, Linda
Meusburger, Katrin
Knuesel, Simon
Walthert, Lorenz
Salmon, Yann
Bose, Arun K.
Schoenbeck, Leonie
Hug, Christian
De Girardi, Nicolas
Giuggiola, Arnaud
Schaub, Marcus
Rigling, Andreas
author_sort Zweifel, Roman
collection PubMed
description Tree responses to altered water availability range from immediate (e.g. stomatal regulation) to delayed (e.g. crown size adjustment). The interplay of the different response times and processes, and their effects on long‐term whole‐tree performance, however, is hardly understood. Here we investigated legacy effects on structures and functions of mature Scots pine in a dry inner‐Alpine Swiss valley after stopping an 11‐yr lasting irrigation treatment. Measured ecophysiological time series were analysed and interpreted with a system‐analytic tree model. We found that the irrigation stop led to a cascade of downregulations of physiological and morphological processes with different response times. Biophysical processes responded within days, whereas needle and shoot lengths, crown transparency, and radial stem growth reached control levels after up to 4 yr only. Modelling suggested that organ and carbon reserve turnover rates play a key role for a tree’s responsiveness to environmental changes. Needle turnover rate was found to be most important to accurately model stem growth dynamics. We conclude that leaf area and its adjustment time to new conditions is the main determinant for radial stem growth of pine trees as the transpiring area needs to be supported by a proportional amount of sapwood, despite the growth‐inhibiting environmental conditions.
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spelling pubmed-73835782020-07-27 Determinants of legacy effects in pine trees – implications from an irrigation‐stop experiment Zweifel, Roman Etzold, Sophia Sterck, Frank Gessler, Arthur Anfodillo, Tommaso Mencuccini, Maurizio von Arx, Georg Lazzarin, Martina Haeni, Matthias Feichtinger, Linda Meusburger, Katrin Knuesel, Simon Walthert, Lorenz Salmon, Yann Bose, Arun K. Schoenbeck, Leonie Hug, Christian De Girardi, Nicolas Giuggiola, Arnaud Schaub, Marcus Rigling, Andreas New Phytol Research Tree responses to altered water availability range from immediate (e.g. stomatal regulation) to delayed (e.g. crown size adjustment). The interplay of the different response times and processes, and their effects on long‐term whole‐tree performance, however, is hardly understood. Here we investigated legacy effects on structures and functions of mature Scots pine in a dry inner‐Alpine Swiss valley after stopping an 11‐yr lasting irrigation treatment. Measured ecophysiological time series were analysed and interpreted with a system‐analytic tree model. We found that the irrigation stop led to a cascade of downregulations of physiological and morphological processes with different response times. Biophysical processes responded within days, whereas needle and shoot lengths, crown transparency, and radial stem growth reached control levels after up to 4 yr only. Modelling suggested that organ and carbon reserve turnover rates play a key role for a tree’s responsiveness to environmental changes. Needle turnover rate was found to be most important to accurately model stem growth dynamics. We conclude that leaf area and its adjustment time to new conditions is the main determinant for radial stem growth of pine trees as the transpiring area needs to be supported by a proportional amount of sapwood, despite the growth‐inhibiting environmental conditions. John Wiley and Sons Inc. 2020-05-09 2020-08 /pmc/articles/PMC7383578/ /pubmed/32259280 http://dx.doi.org/10.1111/nph.16582 Text en © 2020 The Authors. New Phytologist © 2020 New Phytologist Trust This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research
Zweifel, Roman
Etzold, Sophia
Sterck, Frank
Gessler, Arthur
Anfodillo, Tommaso
Mencuccini, Maurizio
von Arx, Georg
Lazzarin, Martina
Haeni, Matthias
Feichtinger, Linda
Meusburger, Katrin
Knuesel, Simon
Walthert, Lorenz
Salmon, Yann
Bose, Arun K.
Schoenbeck, Leonie
Hug, Christian
De Girardi, Nicolas
Giuggiola, Arnaud
Schaub, Marcus
Rigling, Andreas
Determinants of legacy effects in pine trees – implications from an irrigation‐stop experiment
title Determinants of legacy effects in pine trees – implications from an irrigation‐stop experiment
title_full Determinants of legacy effects in pine trees – implications from an irrigation‐stop experiment
title_fullStr Determinants of legacy effects in pine trees – implications from an irrigation‐stop experiment
title_full_unstemmed Determinants of legacy effects in pine trees – implications from an irrigation‐stop experiment
title_short Determinants of legacy effects in pine trees – implications from an irrigation‐stop experiment
title_sort determinants of legacy effects in pine trees – implications from an irrigation‐stop experiment
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7383578/
https://www.ncbi.nlm.nih.gov/pubmed/32259280
http://dx.doi.org/10.1111/nph.16582
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