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dc.contributor.author
Kruk, Carla  
dc.contributor.author
Segura, Angel  
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Piñeiro, Gervasio  
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Baldassini, Pablo  
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Pérez Becoña, Laura  
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Garcia Rodriguez, Felipe  
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Perera, Gonzalo  
dc.contributor.author
Piccini, Claudia  
dc.date.available
2024-03-01T11:43:10Z  
dc.date.issued
2023-02  
dc.identifier.citation
Kruk, Carla; Segura, Angel; Piñeiro, Gervasio; Baldassini, Pablo; Pérez Becoña, Laura; et al.; Rise of toxic cyanobacterial blooms is promoted by agricultural intensification in the basin of a large subtropical river of South America; Wiley Blackwell Publishing, Inc; Global Change Biology; 29; 7; 2-2023; 1774-1790  
dc.identifier.issn
1354-1013  
dc.identifier.uri
http://hdl.handle.net/11336/229079  
dc.description.abstract
Toxic cyanobacterial blooms are globally increasing with negative effects on aquatic ecosystems, water use and human health. Blooms' main driving forces are eutrophication, dam construction, urban waste, replacement of natural vegetation with croplands and climate change and variability. The relative effects of each driver have not still been properly addressed, particularly in large river basins. Here, we performed a historical analysis of cyanobacterial abundance in a large and important ecosystem of South America (Uruguay river, ca 1900 km long, 365,000 km2 basin). We evaluated the interannual relationships between cyanobacterial abundance and land use change, river flow, urban sewage, temperature and precipitation from 1963 to the present. Our results indicated an exponential increase in cyanobacterial abundance during the last two decades, congruent with an increase in phosphorus concentration. A sharp shift in the cyanobacterial abundance rate of increase after the year 2000 was identified, resulting in abundance levels above public health alert since 2010. Path analyses showed a strong positive correlation between cyanobacteria and cropland area at the entire catchment level, while precipitation, temperature and water flow effects were negligible. Present results help to identify high nutrient input agricultural practices and nutrient enrichment as the main factors driving toxic bloom formation. These practices are already exerting severe effects on both aquatic ecosystems and human health and projections suggest these trends will be intensified in the future. To avoid further water degradation and health risk for future generations, a large-scale (transboundary) change in agricultural management towards agroecological practices will be required.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Wiley Blackwell Publishing, Inc  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
CROPS  
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CYANOBACTERIAL BLOOMS  
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HEALTH RISK  
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LAND USE  
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PRECIPITATION  
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TEMPERATURE  
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Otras Agricultura, Silvicultura y Pesca  
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Agricultura, Silvicultura y Pesca  
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CIENCIAS AGRÍCOLAS  
dc.title
Rise of toxic cyanobacterial blooms is promoted by agricultural intensification in the basin of a large subtropical river of South America  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2024-02-28T09:47:02Z  
dc.journal.volume
29  
dc.journal.number
7  
dc.journal.pagination
1774-1790  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Kruk, Carla. Universidad de la República; Uruguay. Instituto de Investigaciones Biológicas "Clemente Estable"; Uruguay  
dc.description.fil
Fil: Segura, Angel. Universidad de la República; Uruguay  
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Fil: Piñeiro, Gervasio. 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. Universidad de la República; Uruguay  
dc.description.fil
Fil: Baldassini, Pablo. 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. Instituto Nacional de Investigacion Agropecuaria;  
dc.description.fil
Fil: Pérez Becoña, Laura. Universidad de la Republica. Centro Universitario Regional del Este. Sede Universitaria de Rocha; Uruguay  
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Fil: Garcia Rodriguez, Felipe. Universidad de la Republica. Centro Universitario Regional del Este. Sede Universitaria de Rocha; Uruguay. Instituto de Investigaciones Biológicas "Clemente Estable"; Uruguay. Universidade Federal do Rio Grande; Brasil  
dc.description.fil
Fil: Perera, Gonzalo. Universidad de la República; Uruguay  
dc.description.fil
Fil: Piccini, Claudia. Instituto de Investigaciones Biológicas "Clemente Estable"; Uruguay  
dc.journal.title
Global Change Biology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1111/gcb.16587  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/gcb.16587