Results 31 to 40 of about 1,660 (182)

Is precipitation a trigger for the onset of xylogenesis in Juniperus przewalskii on the north-eastern Tibetan Plateau? [PDF]

open access: yes, 2015
Background and Aims A series of studies have shown that temperature triggers the onset of xylogenesis of trees after winter dormancy. However, little is known about whether and how moisture availability influences xylogenesis in spring in drought-prone ...
Gričar, Jožica   +4 more
core   +3 more sources

The effects of throughfall exclusion on xylogenesis of balsam fir [PDF]

open access: yesTree Physiology, 2013
A 20-40% reduction in soil moisture is projected for the boreal forest of Eastern Canada for the period 2070-99 relative to 1971-2000. In order to better predict the effects of a reduced water supply on the growth of balsam fir (Abies balsamea (L.) Mill.), a dominant tree species of the boreal forest, we simulated 2 consecutive years of summer droughts
D'Orangeville, Loïc   +3 more
openaire   +3 more sources

Identification and Expression Profile of CLE41/44-PXY-WOX Genes in Adult Trees Pinus sylvestris L. Trunk Tissues during Cambial Activity

open access: yesPlants, 2023
WUSCHEL (WUS)-related homeobox (WOX) protein family members play important roles in the maintenance and proliferation of the stem cells in the cambium, the lateral meristem that forms all the wood structural elements.
Natalia A. Galibina   +10 more
doaj   +1 more source

Origin of Intra-annual Density Fluctuations in a Semi-arid Area of Northwestern China

open access: yesFrontiers in Plant Science, 2021
Intra-annual density fluctuation (IADF) is a structural modification of the tree ring in response to fluctuations in the weather. The expected changes in monsoon flow would lead to heterogeneous moisture conditions during the growing season and increase ...
Jiani Gao   +7 more
doaj   +1 more source

Intra-Annual Wood Formation of Cryptomeria fortunei and Cunninghamia lanceolata in Humid Subtropical China

open access: yesFrontiers in Ecology and Evolution, 2021
Monitoring cambial activity is important for a better understanding of the mechanisms governing xylem growth responses to climate change, providing a scientific basis for tree-ring-based climate reconstructions and projections about tree growth under ...
Zhuangpeng Zheng   +7 more
doaj   +1 more source

Comparing the Cell Dynamics of Tree-Ring Formation Observed in Microcores and as Predicted by the Vaganov–Shashkin Model

open access: yesFrontiers in Plant Science, 2020
New insights into the intra-annual dynamics of tree-ring formation can improve our understanding of tree-growth response to environmental conditions at high-resolution time scales. Obtaining this information requires, however, a weekly monitoring of wood
Valentina Buttò   +9 more
doaj   +1 more source

Plastic responses of Abies pinsapo xylogenesis to drought and competition [PDF]

open access: yesTree Physiology, 2009
Radial growth and xylogenesis were studied to investigate the influence of climate variability and intraspecific competition on secondary growth in Abies pinsapo Boiss., a relic Mediterranean fir. We monitored the responses to three thinning treatments (unthinned control -C-, 30% -T30- and 60% -T60- of basal area removed) to test the hypothesis that ...
Juan Carlos, Linares   +2 more
openaire   +2 more sources

Environmental Drivers for Cambial Reactivation of Qilian Junipers (Juniperus przewalskii) in a Semi-Arid Region of Northwestern China

open access: yesAtmosphere, 2020
Although cambial reactivation is considered to be strongly dependent on temperature, the importance of water availability at the onset of xylogenesis in semi-arid regions still lacks sufficient evidences.
Qiao Zeng   +4 more
doaj   +1 more source

Multi-scale influence of snowmelt on xylogenesis of black spruce [PDF]

open access: yes, 2011
Snowmelt is considered to affect growth of the boreal forest. So, we tested the hypothesis that late snowmelts delay the onset of xylogenesis and reduce xylem production in trees. Timings of xylem formation were compared to the dates of complete snowmelt
Rossi, Sergio   +5 more
core   +1 more source

Limited growth recovery after drought-induced forest dieback in very defoliated trees of two pine species

open access: yesFrontiers in Plant Science, 2016
Mediterranean pine forests display high resilience after extreme climatic events such as severe droughts. However, recent dry spells causing growth decline and triggering forest dieback challenge the capacity of some forests to recover following major ...
Guillermo eGuada   +3 more
doaj   +1 more source

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