Artículo
The impact of livestock grazing on the spatial pattern of vegetation in north-eastern Patagonia, Argentina
Funk, Flavia Alejandra
; Peter, Guadalupe
; Leder, Cintia Vanesa
; Loydi, Alejandro
; Kröpfl, Alicia Inés; Distel, Roberto Alejandro
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Fecha de publicación:
05/2018
Editorial:
Taylor & Francis Ltd
Revista:
Plant Ecology & Diversity
ISSN:
1755-0874
e-ISSN:
1755-1668
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Resumen
Background: The occurrence of shrub patches, alternating with either bare soil or low herbaceous cover, is a common feature in arid and semi-arid shrublands throughout the world. This patchy pattern of vegetation may result from water limitation, modulated by plant interactions; grazing (offtake and tramping) by livestock may cause further patchiness vegetation structure. Aims: We hypothesised that vegetation patchiness in the semi-arid shrublands of north-eastern Patagonia would be increased by livestock grazing, but not by positive interactions between adult plants of shrubs and grasses. Methods: We compared vegetation cover and pattern at three grazing intensities (exclosure, light and heavy grazing) and measured the growth of a representative shrub and grass in the presence and absence of the other to quantify the role of plant-to-plant interactions and its interaction with grazing for vegetation structure. Results: In the grazing exclosure and in moderately grazed areas, vegetation cover among shrub patches was larger, whereas the top cover of shrubs was lower than in the heavily grazed areas. We did not find any evidence of positive interactions between shrub and grass life forms. Conclusions: Our results were consistent with the hypothesis that livestock grazing increased the formation of patchy vegetation cover in arid and semi-arid shrublands
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Articulos(CERZOS)
Articulos de CENTRO REC.NAT.RENOVABLES DE ZONA SEMIARIDA(I)
Articulos de CENTRO REC.NAT.RENOVABLES DE ZONA SEMIARIDA(I)
Articulos(IADO)
Articulos de INST.ARG.DE OCEANOGRAFIA (I)
Articulos de INST.ARG.DE OCEANOGRAFIA (I)
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Funk, Flavia Alejandra; Peter, Guadalupe; Leder, Cintia Vanesa; Loydi, Alejandro; Kröpfl, Alicia Inés; et al.; The impact of livestock grazing on the spatial pattern of vegetation in north-eastern Patagonia, Argentina; Taylor & Francis Ltd; Plant Ecology & Diversity; 11; 2; 5-2018; 219-227
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