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| Humaña,Ana María; Valdivia,Carlos E.. |
| Se determinó el sistema reproductivo del árbol endémico de Chile central Crinodendron patagua, realizándose cuatro tratamientos de polinización dirigida más un control por polinización natural. Las flores de la prueba de agamospermia no fructificaron exitosamente, demostrando que la especie no es apomíctica. La prueba de autopolinización automática alcanzó un 6,9% de fructificación, a pesar del 27,7% de fructificación alcanzado en la prueba de autopolinización manual. La prueba de polinización cruzada alcanzó un 72,9% de fructificación exitosa, igualando el valor de fructificación en la prueba de polinización natural. De acuerdo a estos datos, C. patagua debe ser considerada como una planta autoincompatible, con un índice de incompatibilidad de 0,12,... |
| Tipo: Journal article |
Palavras-chave: Autoincompatibilidad; Polinización; Semillas; Xenogamia. |
| Ano: 2004 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432004000200002 |
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| Gantz,Alberto; Yañez,Miguel; Orellana,José I.; Sade,Soraya; Valdivia,Carlos E.. |
| ABSTRACT In forest ecosystems, numerous species of insectivorous birds use certain tree species as feeding and nesting substrates. Between 2009 and 2010, the use of different floristic components as feeding substrate by the Pygarrhichas albogularis King, 1831 was evaluated in a southern Chilean secondary native forest. From a total of 13 trees and bush species, six tree species were used by P. albogularis as a feeding substrate. Tree use was limited to intermediate heights (11-20 m) and, mainly, to the trunk (40% of observations) and secondary branches (26%). Pygarrhichas albogularis showed a disproportionated use of N. dombeyi and an important use of trees with a greater age structure (DBH 81-100 cm). Nothofagus dombeyi presented a significantly greater... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Temperate forest; Chile; White-throated Treerunner; Floristic use. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212015000200193 |
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| López-Colin,Gabriela A.E.; Valdivia,Carlos E.; Morales-Paredes,Carlos; Sade,Soraya; Rau,Jaime R.. |
| ABSTRACT Fruits of Gevuina avellana (Proteaceae) seem to mimic wasp-induced galls of Nothofagus dombeyi (Nothofagaceae) to escape predation by rodents, which may change both spatially and temporarily. The objective of this study was to evaluate the similarity between the fruits of G. avellana and the galls of N. dombeyi and to determine if this similarity protects fruits from predation by rodents in a disturbed temperate forest. We evaluated: i) the similarity between fruits and galls by measuring length, diameter, weight and color; and ii) the effects of galls on fruit predation by offering them to rodents in varying proportions, in a forest and a meadow, over two years. Fruits and galls showed similar phenotypes but fruits were more consumed than galls,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Batesian mimicry; Aditrochus coihuensis; Granivory; Austral temperate forests; Chile. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000400624 |
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