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dc.contributor.author
Sica, Yanina Vanesa  
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Gavier Pizarro, Gregorio  
dc.contributor.author
Pidgeon, Anne  
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Travaini, Alejandro  
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Bustamante, Javier  
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Radeloff, Volker  
dc.contributor.author
Quintana, Ruben Dario  
dc.date.available
2022-10-21T11:12:43Z  
dc.date.issued
2018-11  
dc.identifier.citation
Sica, Yanina Vanesa; Gavier Pizarro, Gregorio; Pidgeon, Anne; Travaini, Alejandro; Bustamante, Javier; et al.; Changes in bird assemblages in a wetland ecosystem after 14 years of intensified cattle farming; Wiley Blackwell Publishing, Inc; Austral Ecology; 43; 7; 11-2018; 786-797  
dc.identifier.issn
1442-9985  
dc.identifier.uri
http://hdl.handle.net/11336/174287  
dc.description.abstract
Human activities have modified wetlands all over the word. Water control structures that are frequently implemented in these ecosystems to keep lands free of flooding can decrease or degrade habitat for biodiversity. The Paraná River Delta, one of the largest wetlands in Argentina, has recently experienced rapid cattle grazing intensification facilitated by water control structures, resulting in extensive conversion of wetlands to pastures. It is unclear if this loss of wetlands has had a negative impact on the highly diverse bird community. Here, we evaluated the changes in bird assemblages in the Lower Delta of Paraná River after 14 years of cattle grazing intensification. We compared point count data from 1997 to 1999 with data collected in 2012 and 2013 using the same survey methods. We assessed the temporal changes in bird richness and composition using paired permutation tests and multivariate analysis. We related the bird composition to landscape changes to analyse if avian changes were associated with landscape dynamics. We found that after 14 years, the bird community differed greatly. In general, species richness decreased, especially in wet years. We found fewer wetland species in recent surveys; in particular we did not register saffron-cowled blackbird (Xanthopsar flavus), a species listed as globally vulnerable. Changes in bird composition were associated with an increase in bare soil due to land-use changes. Even though inter-annual differences in precipitation and river stage have great effects on the species present in the surveys, the absence of many wetland species in recent wet years, that is when habitat is suitable for them, is most likely due to changes in land cover. Globally, agricultural land use makes inroads into many wetlands, eroding their quality and extent. Maintenance of wetland species requires that conservation efforts focus on these vulnerable ecosystems before full-scale land conversion occurs.  
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
BIODIVERSITY LOSS  
dc.subject
GRAZING LANDS  
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LOWER DELTA OF PARANA RIVER  
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WETLAND CONVERSION  
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WETLANDS BIRDS  
dc.subject.classification
Ecología  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
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Zoología, Ornitología, Entomología, Etología  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
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Conservación de la Biodiversidad  
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Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Changes in bird assemblages in a wetland ecosystem after 14 years of intensified cattle farming  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2022-09-28T17:50:53Z  
dc.journal.volume
43  
dc.journal.number
7  
dc.journal.pagination
786-797  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Sica, Yanina Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación de Recursos Naturales. Instituto de Recursos Biológicos; Argentina  
dc.description.fil
Fil: Gavier Pizarro, Gregorio. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación de Recursos Naturales. Instituto de Recursos Biológicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina  
dc.description.fil
Fil: Pidgeon, Anne. No especifíca;  
dc.description.fil
Fil: Travaini, Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Patagonia Austral. Unidad Académica Caleta Olivia. Centro de Investigaciones Puerto Deseado; Argentina  
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Fil: Bustamante, Javier. Consejo Superior de Investigaciones Científicas; España  
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Fil: Radeloff, Volker. No especifíca;  
dc.description.fil
Fil: Quintana, Ruben Dario. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental. - Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigación e Ingeniería Ambiental; Argentina  
dc.journal.title
Austral Ecology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/aec.12621