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dc.contributor.author
Larreguy, Cecilia
dc.contributor.author
Carrera, Analía Lorena
dc.contributor.author
Bertiller, Monica Beatriz
dc.date.available
2019-08-26T20:17:06Z
dc.date.issued
2012-01
dc.identifier.citation
Larreguy, Cecilia; Carrera, Analía Lorena; Bertiller, Monica Beatriz; Production and turnover rates of shallow fine roots in rangelands of the Patagonian Monte, Argentina; Springer Tokyo; Ecological Research; 27; 1; 1-2012; 61-68
dc.identifier.issn
0912-3814
dc.identifier.uri
http://hdl.handle.net/11336/82157
dc.description.abstract
Selective sheep grazing in arid rangelands induces a decrease in total cover and grass cover and an increase in the dominance of shrubs. Both life forms differ in aboveground and belowground traits. We hypothesized that grazing disturbance leads to the replacement of grass by shrub fine roots in the upper soil, and this is reflected in changes in the seasonal dynamics of shallow fine roots at the community level. In two sites representative of non-grazed and grazed vegetation states in the Patagonian Monte, we assessed the canopy structure, and the fine root biomass, N concentration, production, and turnover during two consecutive years. The non-grazed site exhibited higher total, grass, and shrub cover than the grazed site. The grazed site had larger or equal fine root biomass than the non-grazed site except for late spring of the second year. This could be associated with the ability of shrubs to develop dimorphic-root systems occupying the soil freed by grasses at the grazed site, and with the larger contribution of grass than shrub fine roots in relation to an extraordinary precipitation event at the non-grazed site. This was consistent with the N concentration in fine roots. Fine root production was positively correlated to temperature at the grazed site and with precipitation at the non-grazed site. Fine root turnover did not differ between sites. Our results indicate that grazing leads to a shifting in the seasonality and main climatic controls of fine root production, while fine root turnover is mostly affected by changes in soil water conditions.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer Tokyo
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Arid Ecosystems
dc.subject
Fine Root Biomass
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N Concentration
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Perennial Grass Cover
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Shrub Cover
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Otras Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Production and turnover rates of shallow fine roots in rangelands of the Patagonian Monte, Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-07-15T14:57:39Z
dc.identifier.eissn
1440-1703
dc.journal.volume
27
dc.journal.number
1
dc.journal.pagination
61-68
dc.journal.pais
Japón
dc.journal.ciudad
Tokyo
dc.description.fil
Fil: Larreguy, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia. Facultad de Ciencias Naturales. Sede Puerto Madryn; Argentina
dc.description.fil
Fil: Carrera, Analía Lorena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia. Facultad de Ciencias Naturales. Sede Puerto Madryn; Argentina
dc.description.fil
Fil: Bertiller, Monica Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia. Facultad de Ciencias Naturales. Sede Puerto Madryn; Argentina
dc.journal.title
Ecological Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s11284-011-0869-5
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://esj-journals.onlinelibrary.wiley.com/doi/abs/10.1007/s11284-011-0869-5
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