Mostrar el registro sencillo del ítem

dc.contributor.author
Romero Ovalle, Paula Esteli  
dc.contributor.author
Bisigato, Alejandro Jorge  
dc.contributor.author
Campanella, María Victoria  
dc.date.available
2022-03-16T15:57:57Z  
dc.date.issued
2021-06  
dc.identifier.citation
Romero Ovalle, Paula Esteli; Bisigato, Alejandro Jorge; Campanella, María Victoria; Soil erosion facilitates shrub encroachment in Patagonian herbaceous steppes; John Wiley & Sons Ltd; Land Degradation & Development; 32; 11; 6-2021; 3377-3385  
dc.identifier.issn
1085-3278  
dc.identifier.uri
http://hdl.handle.net/11336/153449  
dc.description.abstract
Previous studies in northeastern Patagonia suggested that, mainly as a consequence of overgrazing by sheep, the herbaceous steppes are being replaced by shrub steppes dominated by Chuquiraga avellanedae as a consequence of shrub encroachment. The herbaceous steppe presents a thick sandy loam to loamy sand A-horizon lying on a clay-horizon while the shrub steppe presents the clay-horizon at or near the soil surface. The thickness reduction of the remaining A-horizon and the formation of desert pavements are evidence of soil erosion. As previous studies suggested that shrub encroachment co-occurs with the erosion of the sandy A-horizon, we hypothesized that shrub encroachment is favored by the presence of an clay-horizon near the soil surface. We expected that C. avellanedae emergence and establishment would be higher as the clay horizon is closer to the soil surface and the A-horizon is reduced. We performed field and greenhouse experiments to evaluate seedling emergence and establishment along a gradient of A-horizon thickness. We found that the presence of a relatively thin sandy layer on the surface had a negative influence on both shrub emergence and establishment. The summer drought was not a critical period for the seedlings. Conversely, the highest seedling mortality took place during late winter in sandy soils, suggesting that these soils are more susceptible to frost heaving than clay soils. In conclusion, soil erosion in the northeastern Patagonian steppes would indirectly facilitate shrub encroachment due to differences in frost heaving susceptibility between sandy and clay soils.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
John Wiley & Sons Ltd  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
FROST HEAVING  
dc.subject
PATAGONIA  
dc.subject
SEEDLING SURVIVAL  
dc.subject
SHRUB ENCROACHMENT  
dc.subject
SOIL EROSION  
dc.subject.classification
Ecología  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Soil erosion facilitates shrub encroachment in Patagonian herbaceous steppes  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2021-12-03T19:26:12Z  
dc.identifier.eissn
1099-145X  
dc.journal.volume
32  
dc.journal.number
11  
dc.journal.pagination
3377-3385  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Romero Ovalle, Paula Esteli. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina  
dc.description.fil
Fil: Bisigato, Alejandro Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina  
dc.description.fil
Fil: Campanella, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentina  
dc.journal.title
Land Degradation & Development  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/ldr.4016  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1002/ldr.4016