Evidence map›Paper›PMID 34118158›Full record

ArticleThe New phytologist2021

Why trees grow at night.

Roman Zweifel, Frank Sterck, Sabine Braun, Nina Buchmann, Werner Eugster, Arthur Gessler, Matthias Häni, Richard L Peters, Lorenz Walthert, Micah Wilhelm and 2 more

Abstract read
In one paragraph

Article in The New phytologist, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

59 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Roman ZweifelSwiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, 8903, Switzerland.ORCID 0000-0001-9438-0582
Frank SterckForest Ecology and Management Group, Wageningen University, Wageningen, 6708 PB, the Netherlands.ORCID 0000-0001-7559-6572
Sabine BraunInstitute for Applied Plant Biology, Witterswil, 4108, Switzerland.ORCID 0000-0003-4268-7659
Nina BuchmannDepartment of Environmental Systems Science, Institute of Agricultural Sciences, ETH Zurich, Zurich, 8092, Switzerland.ORCID 0000-0003-0826-2980
Werner EugsterDepartment of Environmental Systems Science, Institute of Agricultural Sciences, ETH Zurich, Zurich, 8092, Switzerland.ORCID 0000-0001-6067-0741
Arthur GesslerSwiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, 8903, Switzerland.ORCID 0000-0002-1910-9589
Matthias HäniSwiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, 8903, Switzerland.ORCID 0000-0003-3977-2166
Richard L PetersSwiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, 8903, Switzerland.ORCID 0000-0002-7441-1297
Lorenz WalthertSwiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, 8903, Switzerland.ORCID 0000-0002-1790-8563
Micah WilhelmSwiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, 8903, Switzerland.ORCID 0000-0002-5022-3195
Kasia ZiemińskaSwiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, 8903, Switzerland.ORCID 0000-0001-7750-4758
Sophia EtzoldSwiss Federal Institute for Forest, Snow and Landscape Research WSL, Birmensdorf, 8903, Switzerland.ORCID 0000-0002-5383-2228

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The timing of diel stem growth of mature forest trees is still largely unknown, as empirical data with high temporal resolution have not been available so far. Consequently, the effects of day-night conditions on tree growth remained uncertain. Here we present the first comprehensive field study of hourly-resolved radial stem growth of seven temperate tree species, based on 57 million underlying data points over a period of up to 8 yr. We show that trees grow mainly at night, with a peak after midnight, when the vapour pressure deficit (VPD) is among the lowest. A high VPD strictly limits radial stem growth and allows little growth during daylight hours, except in the early morning. Surprisingly, trees also grow in moderately dry soil when the VPD is low. Species-specific differences in diel growth dynamics show that species able to grow earlier during the night are associated with the highest number of hours with growth per year and the largest annual growth increment. We conclude that species with the ability to overcome daily water deficits faster have greater growth potential. Furthermore, we conclude that growth is more sensitive than carbon uptake to dry air, as growth stops before stomata are known to close.

Indexed as

ForestsTreesCarbonSoilWaterCarbonSoilWatercell turgor thresholdclimate changeday-night radial stem growthdendrometerecophysiologyphotoperiodwood and bark formationxylogenesis

Identifiers

PMID34118158
PMCPMC8457160

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.