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Research article2011Peer reviewedOpen access

An intraspecific application of the leaf-height-seed ecology strategy scheme to forest herbs along a latitudinal gradient

De Frenne, Pieter; Graae, Bente J.; Kolb, Anette; Shevtsova, Anna; Baeten, Lander; Chabrerie, Olivier; Brunet, Jörg; Cousins, Sara A. O.; Decocq, Guillaume; Dhondt, Rob; Diekmann, Martin; Gruwez, Robert; Heinken, Thilo; Hermy, Martin; Öster, Mathias; Saguez, Robert; Stanton, Sharon; Tack, Wesley; Vanhellemont, Margot; Verheyen, Kris

Abstract

We measured LHS traits in 41 Anemone nemorosa and 44 Milium effusum populations along a 1900-2300 km latitudinal gradient from N France to N Sweden. We then applied multilevel models to identify the effects of regional (temperature, latitude) and local (soil fertility and acidity, overstorey canopy cover) environmental factors on LHS traits.Both species displayed a significant 4% increase in plant height with every degree northward shift (almost a two-fold plant height difference between the southernmost and northernmost populations). Neither seed mass nor SLA showed a significant latitudinal cline. Temperature had a large effect on the three LHS traits of Anemone. Latitude, canopy cover and soil nutrients were related to the SLA and plant height of Milium. None of the investigated variables appeared to be related to the seed mass of Milium.The variation in LHS traits indicates that the ecological strategy determined by the position of each population in this three-factor triangle is not constant along the latitudinal gradient. The significant increase in plant height suggests greater competitive abilities for both species in the northernmost populations. We also found that the studied environmental factors affected the LHS traits of the two species on various scales: spring-flowering Anemone was affected more by temperature, whereas early-summer flowering Milium was affected more by local and other latitude-related factors. Finally, previously reported cross-species correlations between LHS traits and latitude were generally unsupported by our within-species approach.

Published in

Ecography
2011, Volume: 34, number: 1, pages: 132-140
Publisher: WILEY-BLACKWELL

    UKÄ Subject classification

    Environmental Sciences related to Agriculture and Land-use

    Publication identifier

    DOI: https://doi.org/10.1111/j.1600-0587.2010.06399.x

    Permanent link to this page (URI)

    https://res.slu.se/id/publ/59206