Seasonal changes in photosynthesis of four understory herbs in deciduous forests

Hiroshi Koizumi, Yasuyuki Oshima

    Research output: Contribution to journalArticle

    22 Citations (Scopus)

    Abstract

    Seasonal patterns of photosynthesis and respiration of single leaves of four understory perennial herbs in deciduous forests were investigated in relation to their leaf growth and light conditions on the forest floor. Anemone flaccida shows rapid growth of leaf area and high rates of gross photosynthesis at light saturation (Psat) in its early stage of development. Its photosynthetic activity is restricted to a brief period of high light intensity before the closure of overstory canopies. Disporum smilacinum possesses light-photosynthesis curves of the shade-leaf type throughout its whole growing period. A shading experiment has shown that this plant is low-light adapted and can utilize weak light efficiently. The light-photosynthesis curve of Syneilesis palmata shifts from the sun-leaf type to the shade-leaf type in response to the seasonal change of light regime on the forest floor. Evergreen leaves of Pyrola japonica have three year longevity, and light-photosynthesis curves of the shade-leaf type. They maintain some photosynthetic activity even in late autumn and winter.

    Original languageEnglish
    Pages (from-to)1-13
    Number of pages13
    JournalThe Botanical Magazine Tokyo
    Volume98
    Issue number1
    DOIs
    Publication statusPublished - 1985 Mar

    Fingerprint

    deciduous forests
    understory
    herbs
    photosynthesis
    shade
    leaves
    forest litter
    Syneilesis palmata
    Dispora
    Anemone (plant)
    overstory
    light intensity
    leaf area
    photoperiod
    seasonal variation
    canopy
    autumn
    winter

    Keywords

    • Leaf growth
    • Light condition
    • Photosynthesis
    • Respiration
    • Understory herb

    ASJC Scopus subject areas

    • Plant Science

    Cite this

    Seasonal changes in photosynthesis of four understory herbs in deciduous forests. / Koizumi, Hiroshi; Oshima, Yasuyuki.

    In: The Botanical Magazine Tokyo, Vol. 98, No. 1, 03.1985, p. 1-13.

    Research output: Contribution to journalArticle

    Koizumi, Hiroshi ; Oshima, Yasuyuki. / Seasonal changes in photosynthesis of four understory herbs in deciduous forests. In: The Botanical Magazine Tokyo. 1985 ; Vol. 98, No. 1. pp. 1-13.
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