Evento
Livestock removal is not enough to recover functional diversity in arid ecosystems of the Patagonian Monte (Argentina)
Tipo del evento:
Conferencia
Nombre del evento:
VII World Conference on Ecological Restoration; V Congreso Iberoamericano y del Caribe de Restauración Ecológica; I Conferência Brasileira de Restauração Ecológica
Fecha del evento:
27/08/2017
Institución Organizadora:
Sociedad para la Restauración Ecológica;
Sociedade Brasileira de Restauração Ecológica;
Sociedad Ibero-Americana y del Caribe de Restauración Ecológica;
Título del Libro:
Society for Ecological Restoration (SER) 2017: VII World Conference on Ecological Restoration, V Congreso Iberoamericano y del Caribe de Restauración Ecológica, I Conferência Brasileira de Restauração Ecológica: Linking Science and Practice for a Better World: Book of abstracts
Editorial:
Sociedad para la Restauración Ecológica; Sociedad Ibero-Americana y del Caribe de Restauración Ecológica; Sociedade Brasileira de Restauração Ecológica
ISBN:
978-85-94244-01-7
Idioma:
Inglés
Clasificación temática:
Resumen
Sheep grazing induces the replacement of preferred plant species with lowdefences by others well defended against herbivory, affecting thevariance of trait distributions related to resource capture and utilizationwithin plant communities ("functional diversity"). High functional diversitymay reflect high species complementarity in resource use, improving ecosystemfunctioning. We analysed whether the removal of domestic herbivores (disturbance agent) enhances the functional diversity of traits related to light capture in Patagonian Monte rangelands. We selected two contrasting sites in relation to grazing disturbance: La Elvira (EL) which has been grazed by sheep from the beginning of the past centuryuntil present with a stocking rate of 0.11-0.14 sheep/ha and La Esperanza (ES)subjected to the same grazing history but until 2003, when livestock was removed. At each site, we identified two areas with contrasting signs of grazing disturbance (high and low grazing impact), and we assessed the plantcover and the functional diversity of plant height, specific leaf area and N concentration in green leaves in August 2010. Plant cover was higher in ES (past grazing) than in EL (past and present grazing), and the difference between areas (low and high grazing impact) was higher in ES than EL. Functional diversity did not vary between sites being higher at areas with low than high grazingdisturbance. Accordingly, changes in functional diversity induced by grazing persistedafter livestock removal despite of increased plant cover. In conclusion, short-mediumterm livestock exclusion is not enough to restore functional diversity in the Patagonian Monte.
Palabras clave:
FUNCTIONAL DIVERSITY
,
PLANT TRAITS
,
GRAZING
Archivos asociados
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Identificadores
Colecciones
Eventos(IPEEC)
Eventos de INSTITUTO PATAGONICO PARA EL ESTUDIO DE LOS ECOSISTEMAS CONTINENTALES
Eventos de INSTITUTO PATAGONICO PARA EL ESTUDIO DE LOS ECOSISTEMAS CONTINENTALES
Citación
Livestock removal is not enough to recover functional diversity in arid ecosystems of the Patagonian Monte (Argentina); VII World Conference on Ecological Restoration; V Congreso Iberoamericano y del Caribe de Restauración Ecológica; I Conferência Brasileira de Restauração Ecológica; Foz do Iguassu; Brasil; 2017; 355-355
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