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| Atala,Cristian; Saldaña,Alfredo; Navarrete,Eduardo. |
| In Chilean temperate forest, the fern Blechnum chilense has a wide ecological breath, but occur mainly in full sun habitats, while Blechnum mochaenum is restricted only to shady sites. We evaluated if the species with different ecological breath behave similarly in their anatomical and physiological traits. Maximal photosynthetic rate (Amax), Stomatal conductance (g s), evapotranspiration (E), and SLA (specific leaf area) were measured in situ in 20 individuals of each fern species. Additionally, we estimated the stomatal density (SD), stomatal index (SI), and stomatal size in leaves of each sampled individual. B. mochaenum, the shade-tolerant species, had lower SD, SI, A, and E, and higher stomatal size and SLA than B. chilense. Higher stomatal frequency... |
| Tipo: Journal article |
Palavras-chave: Blechnum; Stomatal density; Stomatal index; Stomatal size; Gas exchange; Evergreen temperate forest. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432012000100016 |
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| Guzmán-Marín,Rosario; Saldaña,Alfredo. |
| ABSTRACT In a Valdivian forest stand, we identified vascular plant species occurring as accidental epiphytes, and we determined the contribution of accidental epiphytism on their local abundance. Four species were found as accidental epiphytes, being the fern Blechnum mochaenum the species showing the higher abundance proportion as accidental epiphyte (40 %). Unexpectedly, individuals of this species occurring as accidental epiphytes did not differ in functional traits related to nutrient availability (LMA-leaf mass ratio- and leaf C/N ratio) from those that usually occur on the forest ground. As a shade tolerant and slow growing species, B. mochaenum apparently is not affected by the environmental restrictions of the epiphytic habitat. |
| Tipo: Journal article |
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| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432017000100226 |
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| Saldaña,Alfredo. |
| El bosque templado lluvioso (sur de Chile) está conformado por tipos forestales que difieren en composición y dominancia de las especies. Estas diferencias deberían determinar cambios en componentes de la diversidad que presentan correlación entre ellos. Este estudio buscó determinar si existe un vínculo entre la riqueza de especies leñosas (S) y la diversidad funcional de sus atributos foliares, en dos ensambles forestales que difieren en composición florística: tipos forestales Valdiviano y Coihue. Se postuló que: i) existe una relación global positiva entre la diversidad funcional y la S; ii) y que como los ensambles difieren en composición, la magnitud de la relación entre diversidad funcional y S diferirá entre los dos tipos forestales. Se describió... |
| Tipo: Journal article |
Palavras-chave: Bosque-templado-lluvioso; Diversidad-funcional; Riqueza-especies; Siempreverdes; LMA. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432013000200001 |
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