Muestra métricas de impacto externas asociadas a la publicación. Para mayor detalle:
| Indexado |
|
||||
| DOI | 10.1111/J.1095-8339.2012.01256.X | ||||
| Año | 2012 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Ecological and evolutionary studies of the epiphytic growth habit in angiosperms are limited. In this article, we assess the relationship between growth habit and regeneration niche in Coronanthereae (Gesneriaceae) and discuss its implications for the evolution of epiphytism in this lineage. In the temperate rainforest of southern Chile, we quantified the vertical distribution and experimentally examined the regeneration niche of three endemic species of Coronanthereae. One species was a holoepiphyte, which was more frequent in the upper canopy, and two species were secondary hemiepiphytes, which decreased in abundance with tree height. Seed germination of the holoepiphyte was higher on tree bark substrates and under open canopy than on forest soil and in the shade. In contrast, seed germination of both secondary hemiepiphytes did not differ between substrates (bark vs. soil) or light conditions (light vs. shade). Seedling survival percentage of secondary hemiepiphytes was higher on forest soil and under a closed canopy, thus behaving as shade-tolerant species. In turn, the holoepiphyte behaved as a shade-intolerant species. The reconstruction of the ancestral growth habits and regeneration niches on the inferred phylogenetic tree of Coronanthereae revealed that the specialized regeneration niche of Sarmienta repens, characterized by requirements of shade intolerance and germination on tree bark, was coupled with the evolution of the holoepiphytic growth habit. We conclude that differentiation in the regeneration niche is a key process in the evolution of epiphytic growth habits in Coronanthereae. (c) 2012 The Linnean Society of London, Botanical Journal of the Linnean Society, 2012, 170, 7992.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | SALINAS-URZUA, MARIA FERNANDA | Mujer |
Pontificia Universidad Católica de Chile - Chile
Instituto de Ecologia y Biodiversidad - Chile |
| 2 | ARMESTO-ZAMUDIO, JUAN JOSE | Hombre |
Pontificia Universidad Católica de Chile - Chile
Instituto de Ecologia y Biodiversidad - Chile |
| Fuente |
|---|
| Comision Nacional Cientifica y Tecnologica |
| Fondo de Financiamiento de Centros de Excelencia en Investigacion - Fondo Nacional de Desarrollo Cientifico y Tecnologico |
| Programa de Mejoramiento de la Equidad y Calidad de la Educacion Superior (Universidad de Chile) |
| Departamento de Postgrado y Postitulo, Universidad de Chile (MFS) |
| Iniciativa Cientifica Milenio (Ministerio de Planificacion y Cooperacion) |
| Agradecimiento |
|---|
| We thank Dolores Zegers, Juan Vidal and Tomas Abud for field assistance; Marcela Bustamante and Wara Marcelo for statistical advice; Fernanda Perez for advice regarding phylogenetic and ancestral state reconstruction analyses; Andres Charrier and Juan L. Celis for assistance with figures; and Rocio Jana, M. Bustamante, Michael F. Fay and two anonymous referees for critical comments on previous versions of the manuscript. This is part of the Doctoral Dissertation submitted by FS to the Facultad de Ciencias, Universidad de Chile, and is a contribution to the Research Program of Senda Darwin Biological Station, Ancud, Chiloe. This work was supported by Fondo de Financiamiento de Centros de Excelencia en Investigacion - Fondo Nacional de Desarrollo Cientifico y Tecnologico (1501-0001) to the Center for Advanced Studies in Ecology and Biodiversity, Pontificia Universidad Catolica de Chile; Iniciativa Cientifica Milenio (Ministerio de Planificacion y Cooperacion) (P05-002); Comision Nacional Cientifica y Tecnologica [PFB 23 to the Institute of Ecology and Biodiversity (IEB), AT-4050069 to FS]; Departamento de Postgrado y Postitulo, Universidad de Chile (MFS); and a grant from Programa de Mejoramiento de la Equidad y Calidad de la Educacion Superior (Universidad de Chile) that allowed FS to visit MEL, AK and NOU herbaria and field sites in Australia, New Zealand and New Caledonia. |