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| GINOCCHIO,ROSANNA; BAKER,ALAN J.M.. |
| In Latin America, metallic ores are abundant and diverse. However, few metal-tolerant and metal hyperaccumulator plants have been reported in the region in comparison with other areas of the world. This may be largely explained by the scarcity of scientific studies of the native vegetation growing on natural mineralized or metal-contaminated areas and the unfrequent use of biogeochemical prospecting techniques by the local mining industry, rather than the proven absence of these plants. Latin America is, however, an area where metal-tolerant and hyperaccumulator plants (metallophytes) should be found, not only because of the wealth of ore deposits and associated metal polluted areas, but also due to its high and unique plant diversity. If plant formations... |
| Tipo: Journal article |
Palavras-chave: Hyperaccumulators; Metal-tolerant plants; Biodiversity; Metal ores; Biogeochemistry. |
| Ano: 2004 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000100014 |
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| GINOCCHIO,ROSANNA; HEPP,JOSEFINA; BUSTAMANT,ELENA; SILVA,YASNA; DE LA FUENTE,LUZ MARÍA; CÁSALE,JEAN FRANCOIS; DE LA HARPE,JEAN PAUL; URRESTARAZU,PAOLA; ANIC,VINKA; MONTENEGRO,GLORIA. |
| Porphyry Cu-Mo deposits have influenced surface water quality in high-Andes of north-central Chile since the Miocene. Water anomalies may reduce species abundance and diversity in alpine meadows as acidic and metal-rich waters are highly toxic to plants The study assessed the importance of surface water quality on plant abundance and diversity in high-alpine meadows at the Yerba Loca Natural Santuary (YLNS), central Chile (33°15' S, 70°18' W). Hydrochemical and plant prospecting were carried out on Piedra Carvajal, Chorrillos del Plomo and La Lata meadows the growing seasons of 2006 and 2007. Direct gradient analysis was performed through canonical correspondence analysis (CCA) to look for relationships among water chemistry and plant factors. High... |
| Tipo: Journal article |
Palavras-chave: Porphyry deposits; Phytotoxicity; Plant diversity; Acid mine drainage; Copper toxicity. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2008000400003 |
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| MONTENEGRO,GLORIA; GINOCCHIO,ROSANNA; SEGURA,ALEJANDRO; KEELY,JOHN E.; GÓMEZ,MIGUEL. |
| Wildfires resulting from thunderstorms are common in some Mediterranean-climate regions, such as southern California, and have played an important role in the ecology and evolution of the flora. Mediterranean-climate regions are major centers for human population and thus anthropogenic impacts on fire regimes may have important consequences on these plant formations. However, changes in fire regimes may have different impacts on Mediterranean type-ecosystems depending on the capability of plants to respond to such perturbations. Therefore, we compare here fire regimes and vegetation responses of two Mediterranean-climate regions which differ in wildfire regimes and history of human occupation, the central zone of Chile (matorral) and the southern area of... |
| Tipo: Journal article |
Palavras-chave: Human impacts; Plant regeneration; Matorral; Chaparral. |
| Ano: 2004 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000300005 |
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| GINOCCHIO,ROSANNA; NARVÁEZ,JÉSSICA. |
| El aumento de la concentración de cobre en los suelos debido a distintas fuentes antrópicas puede producir efectos de toxicidad en las especies vegetales sensibles. Sin embargo, se ha postulado que diversos factores edáficos podrían determinar la biodisponibilidad del cobre y, por lo tanto, la intensidad del efecto fitotóxico, tales como el contenido de materia orgánica y el pH del suelo, además del grado de solubilidad de la forma química en la cual el cobre es incorporado. Para determinar la importancia de la capacidad tamponante del sustrato de crecimiento y de la forma química del cobre en el grado de fitotoxicidad, se expuso plántulas de una especie sensible a concentraciones crecientes de cobre, incorporado como una sal muy soluble en agua (CuSO4) o... |
| Tipo: Journal article |
Palavras-chave: Biodisponibilidad; Fitotoxicidad; Contaminación suelos; Metales. |
| Ano: 2002 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2002000300011 |
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| CUEVAS,JAIME G; SILVA,SERGIO I; LEÓN-LOBOS,PEDRO; GINOCCHIO,ROSANNA. |
| Positive interactions among plants, such as the nurse effect, can attenuate environmental stress (e.g., drought) or reduce the intensity of perturbations (e.g., herbivory), thus enhancing the possibility of regeneration in natural systems. This study analyses the potential use of nurse plants for restoring artificial environments, such as mine hard-rock dumps. We evaluated seedling recruitment and survival in open areas and beneath the canopy of nurse shrubs, with and without grazing exclusion, on an abandoned copper tailings storage facility in north-central Chile. The nurse species was Baccharis linearis (Asteraceae), and seedling species were B. linearis, Haplopappus parvifolius (Asteraceae), Schismus arabicus (Poaceae), and several forb/grass taxa. A... |
| Tipo: Journal article |
Palavras-chave: Baccharis linearis; Haplopappus parvifolius; Hard rock waste; Primary succession; Survival analysis. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2013000100006 |
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