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El manejo del suelo salino usando arena afecta el crecimiento de raíces y la sobrevivencia de plántulas de Prosopis tamarugo Phil. (Fabaceae) Gayana Botánica
León,Mario F.; Silva,Sergio I.; Sandoval,Ana; Aracena,Ismael; Quiñones,Francisco; León-Lobos,Pedro.
RESUMEN La regeneración natural del árbol endémico Prosopis tamarugo es casi inexistente en la Pampa del Tamarugal, probablemente la salinidad del suelo es una barrera para el establecimiento de plántulas. Aunque existen numerosas técnicas para manejar la salinidad del suelo, la creación de un sustrato en la que suelo salino es mezclado con arena es escasamente conocido. En el presente estudio se profundizó en el efecto de tres sustratos experimentales (suelo salino natural, suelo 1:1 y suelo 1:2) en el crecimiento de raíces y supervivencia de plántulas de P. tamarugo durante un período de 50 días. El suelo 1:1 fue creado mezclando suelo natural y arena en igual proporción y el suelo 1:2, aumentado la proporción de arena al doble. Para los tres suelos se...
Tipo: Journal article Palavras-chave: Tamarugo; Raíces; Suelo; Sodio y cloruro; Conductividad eléctrica.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432017000100158
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Nueva localidad en Chile para Menodora linoides Phil. (Oleaceae), especie considerada extinta en el siglo XX Gayana Botánica
Muñoz-Schick,Mélica; Moreira-Muñoz,Andrés; León-Lobos,Pedro.
An area in the Andes of the Valparaíso Region is indicated as a new locality for the species Menodora linoides Phil., an endemic and unique representative of the Oleaceae family in Chile. The plant described in 1863, was considered extinct in the 20th century, but has been collected twice in the present century
Tipo: Journal article
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432006000200004
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The effect of chilling on seed germination of placea species (Asparagales: Amaryllidaceae), an endemic genus to central Chile Gayana Botánica
Guerrero,Pablo C; Sandoval,Ana C; León-Lobos,Pedro.
The effect of chilling on germination was examined for six Placea species, a genus in the Amaryllidaceae endemic to the Andes and Coastal Range of central Chile. Based on their natural environment, we hypothesized that low temperatures would be important for germination in theses species. We addressed two questions (i) do Placea seeds require chilling for seed germination? (ii) if they required chilling, does thermal history before chilling affect their responsivity to chilling? At 4ºC seeds of all species germinated faster and to a higher level than at 25ºC. After 28 days, when seeds held at 25ºC were moved to 4ºC, germination increased significantly, however at the end of the assay, their germination was still lower than those seeds initially at 4ºC....
Tipo: Journal article Palavras-chave: Seed physiology; Dormancy; Biodiversity.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432007000100005
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Phytostabilization of massive mine wastes with native phytogenetic resources: potential for sustainable use and conservation of the native flora in north-central Chile Ciencia e Investigación Agraria
Orchard,Cristina; León-Lobos,Pedro; Ginocchio,Rosanna.
The mining industry has left an important legacy of inadequately abandoned tailing storage facilities (TSFs) in the north-central area of Chile, and they may pose environmental risks. The Chilean government has recently established new regulations governing the closure of TSFs, and these regulations favor the use of environmentally sustainable technologies. Among these technologies is phytostabilization, which can use native plant species that may also have economic and/or subsistence value. Phytostabilization programs based on sustainably maintained native species could also contribute to the conservation of both local flora and regional ecosystems in north-central Chile. The main objective of this study was to use the Coquimbo region as a case study area...
Tipo: Journal article Palavras-chave: Mine tailings; Mining; Natural resources; Rehabilitation; Sustainable management; Valuation of natural resources.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300002
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