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- W2003202356 abstract "We integrate analyses of spatial association with empirical measures of juvenile performance to develop a strategy for Araucaria forest restoration in Brazil. Because pioneer species can differentially facilitate or inhibit target species, we measure native Araucaria angustifolia and exotic Pinus taeda responses to two common pioneer species, Baccharis uncinella and Vernonia discolor in a clear-cut pine plantation. P. taeda establishment and growth was greater than that of A. angustifolia in all treatments, showing its potential for invasiveness. B. uncinella showed significant positive spatial associations with P. taeda and negative spatial associations with A. angustifolia. V. discolor showed significant negative spatial associations with P. taeda but neutral spatial associations with A. angustifolia, it also supported a higher diversity of native species under its canopy than B. uncinella. Experimental results show that these patterns are due to differential establishment restrictions imposed by both pioneers on target species. We conclude that B. uncinella promotes pine invasion while V. discolor restrains it. We suggest strategies for Araucaria forest restoration and highlight the broad applicability of our approach to restoration programs. Wir kombinieren Analysen zur räumlichen Vergesellschaftung mit empirischen Messungen zum Erfolg der Juvenilen, um eine Strategie für die Restauration von Araucaria-Wäldern in Brasilien zu entwickeln. Da Pionierarten Zielarten in unterschiedlicher Weise fördern oder hemmen können, maßen wir auf einer kahlgeschlagenen Kiefernplantage die Reaktion der einheimischen Araucaria angustifolia und der exotischen Pinus taeda auf zwei verbreitete Pionierarten: Baccharis uncinella und Vernonia discolor. Pinus taeda fasste in allen Behandlungen schneller Fuß und wuchs schneller als A. angustifolia, wodurch ihr höheres Invasionspotential zum Ausdruck kommt. Baccharis uncinella zeigte eine signifikant positive räumliche Assoziierung mit P. taeda, aber eine neutrale Beziehung zu A. angustifolia. Vernonia discolor war mit P. taeda significant negativ und neutral mit A. angustifolia assoziiert, und sie beherbergte unter ihrer Krone eine größere Vielfalt einheimischer Arten als B. uncinella. Experimente zeigten, dass diese Muster auf unterschiedliche Hemmungen bei der Ansiedlung zurückzuführen sind. Wir schließen, dass B. uncinella Kieferninvasionen begünstigt, während diese von V. discolor eingeschränkt werden. Wir schlagen Strategien für die Restauration von Araucaria-Wäldern vor und stellen die breite Anwendbarkeit unseres Untersuchungsansatzes in Restaurationsprogrammen heraus." @default.
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- W2003202356 date "2011-12-01" @default.
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- W2003202356 title "Pioneer effects on exotic and native tree colonizers: Insights for Araucaria forest restoration" @default.
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- W2003202356 doi "https://doi.org/10.1016/j.baae.2011.09.011" @default.
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