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  • Spanish scrubland.
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    Non-structural carbohydrate dynamics in shrubland under drought-induced die-off

    The relationship between plant carbon economy and drought responses of co-occurring woody species can be assessed by comparing carbohydrate (C) dynamics following drought and rain periods, relating these dynamics to species’ functional traits. Lloret et al. studied nine woody species coexisting in a continental Mediterranean shrubland that experienced severe drought effects followed by rain. The […] More

  • 3-D rendering of the sample holder volume containing the tree cores
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    Core business: X-ray CT toolchain for tree-ring analysis

    Disentangling tree growth requires more than ring width only. Although X-ray densitometry is an established technique to determine key wood density parameters, tedious manual procedures hamper fast analyses. De Mil et al. present an X-ray computed tomography toolchain to enable high-throughput density profiling of large sets of increment cores. The obtained 3D archive is analysed […] More

  • Lone Juniper in a Drought
    in ,

    Some trees might have adapted to cope with embolisms instead of preventing them

    Drought is expected to increase in frequency and duration throughout the 21st century. However, it remains unclear how vegetation will respond to drought because the underlying physiological mechanisms are not well understood. During drought, hydraulic dysfunction may occur due to the formation of embolism or a gas-filled bubble that blocks the water transport pathway. It […] More

  • Stem hydraulic traits and leaf phenology
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    Stem hydraulic traits and leaf phenology

    The co-occurrence of evergreen and deciduous species in tropical dry forests suggests the existence of different water-use strategies among the species. Fu et al. study six evergreen and six deciduous tree species co-occurring in a tropical dry karst forest in south-west China and find that evergreen tree species have higher cavitation resistance and greater leaf water-stress […] More

  • Modelling crown and wood characteristics of Pinus
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    Modelling crown and wood characteristics of Pinus

    Functional–structural tree models can be used not only for biomass and crown architecture modelling, but also for wood properties. Using L-system language, Fernández et al.  develop a model based on plant allometry and environmental signals so that a harmonic growth can be achieved, and by using monthly steps detailed three-dimensional information for crown and wood characteristics […] More

  • High-resolution proxies for wood microdensitometry
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    High-resolution proxies for wood microdensitometry

    High-resolution proxies for wood microdensitometry Density is a crucial variable in forest and wood science, but gravimetric methods of measurement are mostly destructive and time-consuming. De Ridder et al. derive profiles of wood density variations for the African species Terminalia superba with a resolution of approx. 50 µm from resistance drillings, neutron and X-ray scans. They […] More