Mostrar el registro sencillo del ítem
dc.contributor.author
Rodriguez, Maria Victoria
dc.contributor.author
Bertiller, Monica Beatriz
dc.contributor.author
Sain, Claudia Leticia
dc.date.available
2020-04-14T14:05:15Z
dc.date.issued
2007-07
dc.identifier.citation
Rodriguez, Maria Victoria; Bertiller, Monica Beatriz; Sain, Claudia Leticia; Spatial patterns and chemical characteristics of root biomass in ecosystems of the Patagonian Monte disturbed by grazing; Academic Press Ltd - Elsevier Science Ltd; Journal of Arid Environments; 70; 1; 7-2007; 137-151
dc.identifier.issn
0140-1963
dc.identifier.uri
http://hdl.handle.net/11336/102436
dc.description.abstract
We hypothesized that the reduction in perennial-grass cover induced by grazing in shrublands would be associated with a reduction in fine-root biomass in the upper soil, an increase in the spatial heterogeneity of root biomass, and an increase in N and total phenolics concentrations in fine-root biomass. We analysed the spatial distribution of fine-, intermediate-, and thick-root biomass and the N and total phenolics concentrations in fine roots in sites with different aboveground-plant cover induced by grazing disturbance in the Patagonian Monte. We selected sampling sites varying in the distance to the watering point, the time since sheep grazing exclusion, and historical sheep stocking rates/paddock characteristics. Sites excluded from grazing and those far to the watering point showed the highest perennial-grass cover. Tall- and dwarf-shrub cover did not differ among sites. Fine-, intermediate-, and thick-root biomass and the chemistry of fine roots did not strongly differ among sites. At all sites, N concentration in fine roots was similar to that measured in tall shrubs while total phenolics concentration in fine roots fell within the range of that assessed for perennial grasses and tall shrubs. Results on N concentration would indicate that fine roots of tall shrubs are a main component of the bulk fine-root pool supporting previous evidence that life form shifts resulting from grazing has little effect on the root biomass and chemistry in the upper soil of rangelands.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Academic Press Ltd - Elsevier Science Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
FINE ROOTS
dc.subject
SECONDARY COMPOUNDS
dc.subject.classification
Otras Ciencias Agrícolas
dc.subject.classification
Otras Ciencias Agrícolas
dc.subject.classification
CIENCIAS AGRÍCOLAS
dc.title
Spatial patterns and chemical characteristics of root biomass in ecosystems of the Patagonian Monte disturbed by grazing
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-04-02T14:15:11Z
dc.journal.volume
70
dc.journal.number
1
dc.journal.pagination
137-151
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Rodriguez, Maria Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
dc.description.fil
Fil: Bertiller, Monica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
dc.description.fil
Fil: Sain, Claudia Leticia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
dc.journal.title
Journal of Arid Environments
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jaridenv.2006.12.010
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0140196307000079
Archivos asociados