2009
DOI: 10.4067/s0716-078x2009000300001
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Efectos de la producción de semillas y la heterogeneidad vegetal sobre la supervivencia de semillas y el patrón espacio-temporal de establecimiento de plántulas en Araucaria araucana

Abstract: ARTÍCULO DE INVESTIGACIÓNEfectos de la producción de semillas y la heterogeneidad vegetal sobre la supervivencia de semillas y el patrón espacio-temporal de establecimiento de plántulas en Araucaria araucana RESUMENEl establecimiento de plántulas puede estar limitado por la producción de semillas y asociada a la producción intermitente y sincronizada de semillas (masting) y/o por granivoría, o por falta de micrositios aptos para la germinación y crecimiento de las plantas. La dispersión y supervivencia de sem… Show more

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Cited by 28 publications
(16 citation statements)
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“…). Araucaria reproductive strategy may have been effective for deterring the evolution of big populations of native granivores by providing a nutritious but unpredictable seed crop, alternatively satiating and starving seed predators, and recruiting by pulses of seedling establishment after every mast event (Sanguinetti & Kitzberger , , ). Seedling counts in Tromen and Malleo in 2014, following the same long‐term protocols in references above, proved the 2013 masting event to be no exception (Tromen: 0.15 vs. 0.10–0.17 seedlings m −2 in previous mast events; Malleo: 0.06 vs. 0.02–0.03 seedlings m −2 ) (J. Sanguinetti, unpubl.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…). Araucaria reproductive strategy may have been effective for deterring the evolution of big populations of native granivores by providing a nutritious but unpredictable seed crop, alternatively satiating and starving seed predators, and recruiting by pulses of seedling establishment after every mast event (Sanguinetti & Kitzberger , , ). Seedling counts in Tromen and Malleo in 2014, following the same long‐term protocols in references above, proved the 2013 masting event to be no exception (Tromen: 0.15 vs. 0.10–0.17 seedlings m −2 in previous mast events; Malleo: 0.06 vs. 0.02–0.03 seedlings m −2 ) (J. Sanguinetti, unpubl.…”
Section: Discussionmentioning
confidence: 99%
“…). The survival and germination of seeds produced during mast events are critical for the population dynamics of both pehuén (Sanguinetti & Kitzberger ) and colihue (Pearson et al . ) and, in consequence, for the long‐term survival of the forests they dominate.…”
Section: Introductionmentioning
confidence: 99%
“…According to Muñoz Ibañez (1984), the pehuén may reach their sexual maturity when they overcome more than 30 years old. After this, the species produces extraordinary cycles of seeds (masting years) that are dispersed gravimetrically or by vertebrates (Sanguinetti and Kitzberger, 2009). It has been argued that selective forces, like pollination efficiency and/or predator satiation, are linked to these mast episodes with a high regional synchronicity (Sanguinetti and Kitzberger, 2008).…”
Section: Introductionmentioning
confidence: 99%
“…It also colonizes disturbed areas such as volcanic ash deposits and lava flows and survives in areas with suppressed conditions and wildfire (Burns 1993, Veblen et al 1999, González et al 2005, González & Veblen 2006. Dynamic succession can be limited by masting, seed predation and understory vegetation effects (Sanguinetti & Kitzberger 2009). Although the species possesses a cone production masting pattern, environmentally-triggered, intermittent, moderately-fluctuating, and regionally-synchronous seed predation is compatible even with a low production of seeds (Finckh & Paulsch 1995, Veblen et al 1996.…”
Section: Introductionmentioning
confidence: 99%
“…Molina Araucaria has two regeneration strategies: vegetative regeneration by sprouting and root suckering and germinative regeneration (Veblen 1982, Enright et al 1999). Araucaria seedlings tend to establish beneath parent trees because of the limited dispersal range of its large seeds (Caro 1995, Sanguinetti & Kitzberger 2009). If seedlings immediately colonize gaps and open areas created by dead trees, they can develop into the canopy layer .…”
Section: Introductionmentioning
confidence: 99%