CattaneoSchneiderBravoEtAl2020

Référence

Cattaneo, N., Schneider, R., Bravo, F., Bravo-Oviedo, A. (2020) Inter-specific competition of tree congeners induces changes in crown architecture in Mediterranean pine mixtures. Forest Ecology and Management, 476. (Scopus )

Résumé

Forest canopy has been identified as a major contributor to explaining the potential of mixed stands to provide a greater amount of ecosystem services, including superior productivity. So far, most reports of mixture effects focused on combinations of species with contrasting functional traits. Hence, little is know about the mechanism behind positive effects in mixtures of species with similar traits. Here we used 3D terrestrial laser scanning data to inspect crown architecture of mature trees in pure and mixed stands of P. pinaster L. and P. sylvestris Ait., to gain insight on the observed overyielding of mixed stands. Differences in the crown dimensions of P. pinaster trees in response to mixing with P. sylvestris were observed. Mixture promoted an upward displacement of P. pinaster tree crowns while reduced its capacity to explore the canopy space. P. pinaster relies mainly on height growth to increase crown volume, whereas P. sylvestris increases crown volume by keeping branches lower in the crowns. Overall, we found mechanisms that could promote vertical stratification of tree crowns, in addition to evidence that P. pinaster undergoes greater competition in the upper canopy of mixed stands. These findings could be related to a better canopy space filling in the mixture, but also with more efficient use of the available space, both aspects closely related to overyielding. © 2020 Elsevier B.V.

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@ARTICLE { CattaneoSchneiderBravoEtAl2020,
    AUTHOR = { Cattaneo, N. and Schneider, R. and Bravo, F. and Bravo-Oviedo, A. },
    JOURNAL = { Forest Ecology and Management },
    TITLE = { Inter-specific competition of tree congeners induces changes in crown architecture in Mediterranean pine mixtures },
    YEAR = { 2020 },
    NOTE = { cited By 0 },
    VOLUME = { 476 },
    ABSTRACT = { Forest canopy has been identified as a major contributor to explaining the potential of mixed stands to provide a greater amount of ecosystem services, including superior productivity. So far, most reports of mixture effects focused on combinations of species with contrasting functional traits. Hence, little is know about the mechanism behind positive effects in mixtures of species with similar traits. Here we used 3D terrestrial laser scanning data to inspect crown architecture of mature trees in pure and mixed stands of P. pinaster L. and P. sylvestris Ait., to gain insight on the observed overyielding of mixed stands. Differences in the crown dimensions of P. pinaster trees in response to mixing with P. sylvestris were observed. Mixture promoted an upward displacement of P. pinaster tree crowns while reduced its capacity to explore the canopy space. P. pinaster relies mainly on height growth to increase crown volume, whereas P. sylvestris increases crown volume by keeping branches lower in the crowns. Overall, we found mechanisms that could promote vertical stratification of tree crowns, in addition to evidence that P. pinaster undergoes greater competition in the upper canopy of mixed stands. These findings could be related to a better canopy space filling in the mixture, but also with more efficient use of the available space, both aspects closely related to overyielding. © 2020 Elsevier B.V. },
    AFFILIATION = { Département de biologie, Chimie et Géographie, Université du Québec à Rimouski, 300 allée des Ursulines, Rimouski, QC G5N 1E8, Canada; Sustainable Forest Management Research Institute, Universidad de Valladolid & INIA, Av. Madrid 44, Palencia, 34004, Spain; Departamento de Producción Vegetal y Recursos Forestales, E.T.S de Ingeníeras Agrarias, Universidad de Valladolid, Palencia, Spain; Department of Biogeography and Global Change, National Museum of Natural Sciences, MNCN-CSIC, C/Serrano 115bis, Madrid, 28006, Spain },
    ART_NUMBER = { 118471 },
    AUTHOR_KEYWORDS = { Crown characteristics; Mixed pine forests; Mixing effects; P. pinaster; Pinus sylvestris; Terrestrial laser scanner },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1016/j.foreco.2020.118471 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85089098959&doi=10.1016%2fj.foreco.2020.118471&partnerID=40&md5=8b92774b866ca521239af7e6f6d1f3ce },
}

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