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| SQUEO,FRANCISCO A; ESTADES,CRISTIAN; BAHAMONDE,NIBALDO; CAVIERES,LOHENGRIN A; ROJAS,GLORIA; BENOIT,IVÁN; PARADA,ESPERANZA; FUENTES,ALBERTO; AVILÉS,REINALDO; PALMA,ANTONIO; SOLÍS,RIGOBERTO; GUERRERO,SOFÍA; MONTENEGRO,GLORIA; TORRES-MURA,JUAN C. |
| A partir de 1985 comienzan los esfuerzos del Estado de Chile, con el apoyo de especialistas, para generar listas de especies de plantas (1985) y animales (1987) con altos a moderados riesgos de extinción en el corto plazo producto de actividades antrópicas (i.e., especies amenazadas). Las siete categorías de amenazas utilizadas para la fauna coinciden con las empleadas por la Unión Internacional para la Conservación de la Naturaleza (UICN) en 1982; para la flora hubo coincidencia en solo cinco de las categorías utilizadas. En el año 1994, la Ley 19300 de Bases del Medio Ambiente estableció seis categorías de estados de conservación. El Reglamento para la Clasificación de Especies Silvestres, promulgado el 2005, definió estas seis categorías haciendo una... |
| Tipo: Journal article |
Palavras-chave: Categorías de conservación; En peligro; Especies amenazadas; Riesgo de extinción; Vulnerable. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000400006 |
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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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| MONTENEGRO,GLORIA; PORTALUPPI,MARIANA C; SALAS,FRANCISCO A; DÍAZ,MARÍA F. |
| An ethanol extract prepared from the gametophyte Chilean native moss Sphagnum magellanicum was dried out, weighed and dissolved in distilled water. This extract was then assayed for its antibacterial activity against the G(-) bacteria Azotobacter vinelandii, Erwinia carotovora subsp. carotovora, Enterobacter aerogenes, Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi, Vibrio cholerae, and the G(+) bacteria Staphylococcus aureus subsp. aureus, and Streptococcus type b. The growth of the cultures of E. carotovora subsp. carotovora, and V. cholerae was inhibited at a concentration of 581mg/ml of extract, while the cultures of E. coli, S. typhi and Streptococcus type b were inhibited at a concentration of 1.16 mg/mL of extract. The concentration of... |
| Tipo: Journal article |
Palavras-chave: Sphagnum magellanicum; Phenolic compounds; Antibacterial activity; MIC. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602009000200012 |
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