Seasonal patterns of herbivory, leaf traits and productivity consumption in dry and wet Patagonian forests

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1. Endemic herbivory can influence forest ecosystem function, but how annual productivity consumption relates to seasonal resource utilisation by folivore guilds remains poorly understood. 2. Monthly changes in leaf damage and foliage traits were monitored in "dry" and "wet" Noth...

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Detalles Bibliográficos
Otros Autores: Mazía, Cristina Noemí, Chaneton, Enrique José, Dellacanónica, Cristina, Dipaolo, L., Kitzberger, Thomas
Formato: Artículo
Lenguaje:Inglés
Materias:
FEEDING GUILDS
LEAF ABSCISSION
LITTERFALL
NOTHOFAGUS PUMILIO
TEMPORAL NICHES
ABSCISSION
BIOLOGICAL PRODUCTION
DAMAGE
DECIDUOUS FOREST
DRY FOREST
ECOSYSTEM FUNCTION
FOLIAGE
FOREST ECOSYSTEM
GROWING SEASON
GUILD STRUCTURE
HERBIVORY
LEAF
LEAFMINER
NUTRITIVE VALUE
PLANT-HERBIVORE INTERACTION
RESOURCE USE
SEASONALITY
ARGENTINA
PATAGONIA
AGROMYZIDAE
FAGALES
HEXAPODA
NOTHOFAGACEAE
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2012Mazia.pdf
LINK AL EDITOR.
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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245 1 0 |a Seasonal patterns of herbivory, leaf traits and productivity consumption in dry and wet Patagonian forests 
520 |a 1. Endemic herbivory can influence forest ecosystem function, but how annual productivity consumption relates to seasonal resource utilisation by folivore guilds remains poorly understood. 2. Monthly changes in leaf damage and foliage traits were monitored in "dry" and "wet" Nothofagus pumilio [Fagales: Nothofagaceae] deciduous forests in northern Patagonia, Argentina. Herbivore-induced leaf abscission was assessed and foliar productivity consumption was measured in the canopy and in litterfall harvests. 3. Seasonal damage ranged from 8 percent to 32 percent in dry forest, but remained below 5 percent in wet forest although foliar quality was higher in the latter. In dry forest, dominant guilds were temporally separated; leaf miners consumed younger foliage in spring to early summer, whereas leaf tiers prevailed in late summer to autumn. In wet forest, damage created by external chewers was concentrated in early summer. 4. Insect damage induced premature leaf abscission, especially in dry forest. Although foliar production in wet forest doubled that in dry forest, the percentage of productivity lost to folivores was higher in dry [14-20 percent] than in wet [1.2-1.8 percent] forest. 5. The overall greater impact of herbivory in dry forest canopies countered the expectation that consumption would increase with plant productivity and nutritional quality. Lower temperatures and a shorter growing season are likely to constrain folivory in wet forest stands. 
653 0 |a FEEDING GUILDS 
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653 0 |a GROWING SEASON 
653 0 |a GUILD STRUCTURE 
653 0 |a HERBIVORY 
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653 0 |a NUTRITIVE VALUE 
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653 0 |a SEASONALITY 
653 0 |a ARGENTINA 
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653 0 |a AGROMYZIDAE 
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653 0 |a NOTHOFAGACEAE 
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773 |t Ecological Entomology  |g Vol.37, no.3 (2012), p.193-203 
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900 |a ^aMazía, N.^tDepartamento de Producción Vegetal, Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina 
900 |a ^aChaneton, E.J.^tInstituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agronomia, Consejo Nacional de Investigaciones Científicas y Técnicas [IFEVA-CONICET], Facultad de Agronomía, Universidad de Buenos Aires, Buenos Aires, Argentina 
900 |a ^aDellacanonica, C.^tInstituto de Investigaciones en Biodiversidad y Medioambiente [INIBIOMA-CONICET], Laboratorio Ecotono, Universidad Nacional del Comahue, Bariloche, Argentina 
900 |a ^aDipaolo, L.^t 
900 |a ^aKitzberger, T.^t 
900 |a ^tEcological Entomology^cEcol. Entomol. 
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900 |a DRY FOREST 
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900 |a FOLIAGE 
900 |a FOREST ECOSYSTEM 
900 |a GROWING SEASON 
900 |a GUILD STRUCTURE 
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900 |a LEAF 
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900 |a HEXAPODA 
900 |a NOTHOFAGACEAE 
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900 |a 1. Endemic herbivory can influence forest ecosystem function, but how annual productivity consumption relates to seasonal resource utilisation by folivore guilds remains poorly understood. 2. Monthly changes in leaf damage and foliage traits were monitored in "dry" and "wet" Nothofagus pumilio [Fagales: Nothofagaceae] deciduous forests in northern Patagonia, Argentina. Herbivore-induced leaf abscission was assessed and foliar productivity consumption was measured in the canopy and in litterfall harvests. 3. Seasonal damage ranged from 8 percent to 32 percent in dry forest, but remained below 5 percent in wet forest although foliar quality was higher in the latter. In dry forest, dominant guilds were temporally separated; leaf miners consumed younger foliage in spring to early summer, whereas leaf tiers prevailed in late summer to autumn. In wet forest, damage created by external chewers was concentrated in early summer. 4. Insect damage induced premature leaf abscission, especially in dry forest. Although foliar production in wet forest doubled that in dry forest, the percentage of productivity lost to folivores was higher in dry [14-20 percent] than in wet [1.2-1.8 percent] forest. 5. The overall greater impact of herbivory in dry forest canopies countered the expectation that consumption would increase with plant productivity and nutritional quality. Lower temperatures and a shorter growing season are likely to constrain folivory in wet forest stands. 
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