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Light-dependent changes in the relationship between seed mass and seedling traits: a meta-analysis for rain forest tree species

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Abstract

Seed mass is considered to be an important attribute for the establishment success of plant species being linked with their seed production, establishment, and survival. This meta-analysis shows that seed mass is also closely correlated to growth-related species attributes of the established phase of rain forest tree species, and that the strength of this relationship varies with light conditions. Seed mass is an especially good predictor of species traits under high-light conditions, when the species attain their full growth potential. At high irradiance (>20% of full light) seed mass is negatively correlated with RGR, NAR, LAR, SLA and LMF. At low irradiance (<5% of full light), seed mass is only negatively correlated with LAR and SLA. Correlations between seed mass and morphological traits are therefore strongest at low irradiance where light interception is important. Conversely, correlations between seed mass and a physiological trait are strongest at high irradiance, where maximisation of photosynthetic rates is important. The strength of the correlation between growth parameters and seed mass declines over time, and disappears after 1–4 years. Seed mass appears to be a good proxy for the shade tolerance of tropical tree species, especially at the younger stages of the life cycle.

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Acknowledgements

We thank Christopher Baraloto, Juliette Bloor, Jim Dalling, Kaoru Kitajima and Horacio Paz for kindly allowing us to use their unpublished data. Christopher Baraloto, Hans Cornelissen, Peter Grubb, Kaoru Kitajima, Lawren Sack and an anonymous reviewer gave, as always, challenging comments. L.P. was supported by Veni grant 863.02.007 from the Netherlands Organisation of Scientific Research (NWO).

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  1. Forest Ecology and Forest Management Group, Wageningen University, P.O. Box 47, 6700 AA, Wageningen, The Netherlands

    Lourens Poorter

  2. Forestry Forest Products and Economics Division, Food and Agricultural Organisation, UN Viale delle Terme di Caracalla, 00100, Rome, Italy

    Simmoné A. Rose

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Correspondence to Lourens Poorter.

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Poorter, L., Rose, S.A. Light-dependent changes in the relationship between seed mass and seedling traits: a meta-analysis for rain forest tree species. Oecologia 142, 378–387 (2005). https://doi.org/10.1007/s00442-004-1732-y

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