Does shade improve light interception efficiency? A comparison among seedlings from shade-tolerant and -intolerant temperate deciduous tree species

Here, we tested two hypotheses: shading increases light interception efficiency (LIE) of broadleaved tree seedlings, and shade-tolerant species exhibit larger LIEs than do shade-intolerant ones. The impact of seedling size was taken into account to detect potential size-independent effects on LIE. L...

Ausführliche Beschreibung

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 172(2006), 2 vom: 01., Seite 293-304
1. Verfasser: Delagrange, Sylvain (VerfasserIn)
Weitere Verfasser: Montpied, Pierre, Dreyer, Erwin, Messier, Christian, Sinoquet, Hervé
Format: Aufsatz
Sprache:English
Veröffentlicht: 2006
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Comparative Study Journal Article Research Support, Non-U.S. Gov't
Beschreibung
Zusammenfassung:Here, we tested two hypotheses: shading increases light interception efficiency (LIE) of broadleaved tree seedlings, and shade-tolerant species exhibit larger LIEs than do shade-intolerant ones. The impact of seedling size was taken into account to detect potential size-independent effects on LIE. LIE was defined as the ratio of mean light intercepted by leaves to light intercepted by a horizontal surface of equal area. Seedlings from five species differing in shade tolerance (Acer saccharum, Betula alleghaniensis, A. pseudoplatanus, B. pendula, Fagus sylvatica) were grown under neutral shading nets providing 36, 16 and 4% of external irradiance. Seedlings (1- and 2-year-old) were three-dimensionally digitized, allowing calculation of LIE. Shading induced dramatic reduction in total leaf area, which was lowest in shade-tolerant species in all irradiance regimes. Irradiance reduced LIE through increasing leaf overlap with increasing leaf area. There was very little evidence of significant size-independent plasticity of LIE. No relationship was found between the known shade tolerance of species and LIE at equivalent size and irradiance
Beschreibung:Date Completed 07.12.2006
Date Revised 30.09.2020
published: Print
Citation Status MEDLINE
ISSN:1469-8137