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dc.contributor.author
Lezama, Felipe  
dc.contributor.author
Paruelo, José  
dc.date.available
2018-07-02T19:50:39Z  
dc.date.issued
2016-10  
dc.identifier.citation
Lezama, Felipe; Paruelo, José; Disentangling grazing effects: trampling, defoliation and urine deposition; Wiley Blackwell Publishing, Inc; Applied Vegetation Science; 19; 4; 10-2016; 557-566  
dc.identifier.issn
1402-2001  
dc.identifier.uri
http://hdl.handle.net/11336/50916  
dc.description.abstract
Questions: Do the effects of grazing components on vegetation structure differ in their relative importance? Do components interact in their effect on vegetation?. Location: San Jose department, Southern Campos, Uruguay. Methods: In a manipulative field experiment we simulated three different grazing components: trampling, defoliation and urine deposition, over 3 yr in a natural grassland. Defoliation was analysed through two intensity levels and two procedures: uniform and selective cutting. We evaluated the effects of grazing components on species diversity and composition, and frequency of plant functional types. Results: All simulated grazing components had at least some effect on vegetation structure. Additionally, both individual and interactive effects on vegetation attributes were detected. Our study indicates that the relative influence of each grazing component varied according to the attribute considered. N addition was the only treatment that affected plant diversity. Plant functional type composition, in turn, was affected mainly by trampling. N addition and trampling were the component that affected the frequency of the largest number of species. Defoliation selectivity showed effects both in terms of plant functional type and species composition. Exclosure treatment and defoliation intensity had slight effects on grassland structure. Conclusions: This study provides insight on the underlying mechanisms of some observed patterns of grazing on the Campos grasslands. Our results lead us to conclude that all grazing components have to be taken into account to understand vegetation dynamics subjected to grazing. Prevention of woody encroachment by grazing can be attributed to direct and indirect effects of trampling. Trampling should be taken into account to explain increaser species responses. However, mechanisms responsible for other general patterns remain less clear. The importance of selective defoliation in species replacement induced by grazing in these grasslands has yet to be clarified.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Wiley Blackwell Publishing, Inc  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Campos  
dc.subject
Increaser-Decreaser  
dc.subject
Nitrogen  
dc.subject
Plant Functional Types  
dc.subject
Productivity  
dc.subject
Selectivity  
dc.subject
Soil Compaction  
dc.subject
Species Richness  
dc.subject.classification
Otras Biotecnología Agropecuaria  
dc.subject.classification
Biotecnología Agropecuaria  
dc.subject.classification
CIENCIAS AGRÍCOLAS  
dc.title
Disentangling grazing effects: trampling, defoliation and urine deposition  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-06-22T14:34:25Z  
dc.journal.volume
19  
dc.journal.number
4  
dc.journal.pagination
557-566  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Lezama, Felipe. Universidad de la República. Facultad de Ciencias; Uruguay  
dc.description.fil
Fil: Paruelo, José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina  
dc.journal.title
Applied Vegetation Science  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/avsc.12250  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/avsc.12250