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	Provedor de dados RChHN (3) Autor VEBLEN,THOMAS T (3) PARITSIS,JUAN (2) GONZÁLEZ,MAURO E (1) KITZBERGER,THOMAS (1) QUINTERO,CAROLINA (1) Palavra-chave Araucaria araucana (1) Entomopathogenic nematode (1) Herbivory (1) Historia de fuego (1) Hyposoter (1) Incendios (1) Madereo de aprovechamiento (1) Nothofagus (1) Nothofagus pumilio (1) Outbreaks (1) Parasitoids (1) Predation (1) Mais... Tipo do documento Journal article (3) Ano 2012 (1) 2010 (1) 2007 (1) País Chile (3) Idioma Inglês (2) Espanhol (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Temperature and foliage quality affect performance of the outbreak defoliator Ormiscodes amphimone (F.) (Lepidoptera: Saturniidae) in northwestern Patagonia, Argentina RChHN PARITSIS,JUAN; VEBLEN,THOMAS T. In the temperate forests of Chile and Argentina the phytophagous moth Ormiscodes amphimone (F.) causes severe defoliation on the southern beech tree Nothofagus pumilio (Poepp. & Endl.) Krasser. The recent increase in defoliation frequency in some áreas appears to be influenced by a warmer climate. To evalúate the effects of temperature and the spatial heterogeneity of foliage quality on the performance and relative consumption rate of O. amphimone in northwestern Patagonia, Argentina we conducted a factorial experiment. Larval performance was measured as relative growth rate, developmental time, larval survival, and pupal weight. Larvae of O. amphimone were reared under two constant temperature regimes (15 °C and 20 °C) and fed with two N. pumilio... Tipo: Journal article Palavras-chave: Herbivory; Nothofagus pumilio; Outbreaks. Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000400012 Mortality of the outbreak defoliator Ormiscodes amphimone (Lepidoptera: Saturniidae) caused by natural enemies in northwestern Patagonia, Argentina RChHN PARITSIS,JUAN; QUINTERO,CAROLINA; KITZBERGER,THOMAS; VEBLEN,THOMAS T. Outbreaks of the defoliator moth Ormiscodes amphimone are occurring more frequently in numerous Nothofagus forests of Patagonia. However, little is known about the life history of this species including its natural enemies as mortality agents. In this work we quantified mortality by parasitoids and generalist predators at the egg, larval and pupal life stages of O. amphimone in a Nothofagus pumilio (Poepp. & Endl.) Krasser forest in northwestern Patagonia. Parasitism of eggs was relatively low (ca. 11 %), and we did not record significant larval predation by insectivorous birds. However, we recorded elevated mortality caused by larval parasitoids (ca. 50 % in third instar larvae) and pupal predators (ca. 75 %), which suggests that these natural... Tipo: Journal article Palavras-chave: Entomopathogenic nematode; Hyposoter; Nothofagus; Parasitoids; Predation. Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2012000100009 Incendios en bosques de Araucaria araucana y consideraciones ecológicas al madereo de aprovechamiento en áreas recientemente quemadas RChHN GONZÁLEZ,MAURO E; VEBLEN,THOMAS T. El fuego es el tipo de disturbio más importante en conformar el paisaje forestal de Araucaria araucana en la zona centro-sur de Chile y Argentina. En la Región de la Araucanía el clima y el ser humano han influenciado el régimen de fuego durante al menos los últimos mil años. Los incendios catastróficos ocurridos recientemente (año 2002) que afectaron los bosques de Araucaria atrajeron la atención pública, política y científica generando una importante necesidad de entender las causas y efectos de tales eventos en los ecosistemas forestales. Estos grandes incendios produjeron una abundante cantidad de material muerto en pie y en el suelo, promoviendo el desarrollo de otros atributos estructurales conocidos como legados biológicos que tienen un rol crítico... Tipo: Journal article Palavras-chave: Araucaria araucana; Madereo de aprovechamiento; Incendios; Historia de fuego. Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2007000200009 Registros recuperados: 3 Primeira ... 1 ... Última

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