Experimental branch warming alters tall tree leaf phenology and acorn production

An increasing number of field experiments have been initiated worldwide to study simulated effects of global warming. To experimentally determine how tall, mature trees respond to warming, we developed a new technique that heated canopy-level branches with electric heating cables. Using a canopy cra...

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Veröffentlicht in:Agricultural and forest meteorology 2010-07, Vol.150 (7), p.1026-1029
Hauptverfasser: Nakamura, Masahiro, Muller, Onno, Tayanagi, Shiori, Nakaji, Tatsuro, Hiura, Tsutom
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container_end_page 1029
container_issue 7
container_start_page 1026
container_title Agricultural and forest meteorology
container_volume 150
creator Nakamura, Masahiro
Muller, Onno
Tayanagi, Shiori
Nakaji, Tatsuro
Hiura, Tsutom
description An increasing number of field experiments have been initiated worldwide to study simulated effects of global warming. To experimentally determine how tall, mature trees respond to warming, we developed a new technique that heated canopy-level branches with electric heating cables. Using a canopy crane, we attached electric cables to top canopy branches of tall, mature Quercus crispula Blume (18–20 m in height) trees; shoot temperature was elevated 5 °C above ambient. Branch warming extended the length of the growing season of canopy leaves by later leaf fall. Moreover, branch warming increased acorn production. Application of this technique should lead to a better understanding of how tall, mature trees respond to global warming.
doi_str_mv 10.1016/j.agrformet.2010.04.001
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source Elsevier ScienceDirect Journals
subjects Agricultural and forest climatology and meteorology. Irrigation. Drainage
Agronomy. Soil science and plant productions
Biological and medical sciences
branches
Canopy crane
climate change
field experimentation
Field experiments
forest trees
Fundamental and applied biological sciences. Psychology
General agronomy. Plant production
Global warming
heaters
leaf abscission
Leaf fall
Masting
nuts
overstory
phenology
Quercus
Quercus crispula
seed productivity
seed set
temperate forests
temperature
tree age
tree crown
title Experimental branch warming alters tall tree leaf phenology and acorn production
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