Long-term variations in rodent abundance in a rural landscape of the Pampas, Argentina

The goal of this study was to analyze the variations in abundance of rodent communities over the last 24 years in a rural area, and their relation to possible changes in climatic variables and land use. The principal change in the area observed along the study period was an increase in the area cove...

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Autores principales: Fraschina, Jimena, León, Vanina Andrea, Busch, Maria
Publicado: 2012
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Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09123814_v27_n1_p191_Fraschina
http://hdl.handle.net/20.500.12110/paper_09123814_v27_n1_p191_Fraschina
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spelling paper:paper_09123814_v27_n1_p191_Fraschina2023-06-08T15:49:57Z Long-term variations in rodent abundance in a rural landscape of the Pampas, Argentina Fraschina, Jimena León, Vanina Andrea Busch, Maria Agroecosystems Climate variation Land use Rodent communities abundance agricultural ecosystem agricultural practice climate change frost land use change precipitation (climatology) rodent rural area seasonal variation soybean temperature profile Argentina Pampas Akodon azarae Calomys laucha Glycine max Rodentia The goal of this study was to analyze the variations in abundance of rodent communities over the last 24 years in a rural area, and their relation to possible changes in climatic variables and land use. The principal change in the area observed along the study period was an increase in the area covered by soybean. The habitats studied were crop fields and borders. The total abundance of rodents did not show a significant trend of variation over time in crop fields while in borders the abundance in autumn-winter (A-W) showed a significant trend to decrease over time. The different rodent species showed a differential response over time. While Calomys laucha and C. musculinus showed a decrease between the period before and after the soybean expansion, Akodon azarae did not change its abundance over time. The mean minimum temperature increased over time while the number of days with frost decreased. Total rodent abundance in A-W was positively associated with the cumulated precipitation of the previous spring-summer period and negatively with the cumulated precipitation of the same period. We conclude that rodent abundance variations in crop fields and borders of the study area are influenced by precipitation, but the observed trends of variation over time are better explained by changes in agricultural practices than by meteorological variables. © 2011 The Ecological Society of Japan. Fil:Fraschina, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:León, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Busch, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09123814_v27_n1_p191_Fraschina http://hdl.handle.net/20.500.12110/paper_09123814_v27_n1_p191_Fraschina
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Agroecosystems
Climate variation
Land use
Rodent communities
abundance
agricultural ecosystem
agricultural practice
climate change
frost
land use change
precipitation (climatology)
rodent
rural area
seasonal variation
soybean
temperature profile
Argentina
Pampas
Akodon azarae
Calomys laucha
Glycine max
Rodentia
spellingShingle Agroecosystems
Climate variation
Land use
Rodent communities
abundance
agricultural ecosystem
agricultural practice
climate change
frost
land use change
precipitation (climatology)
rodent
rural area
seasonal variation
soybean
temperature profile
Argentina
Pampas
Akodon azarae
Calomys laucha
Glycine max
Rodentia
Fraschina, Jimena
León, Vanina Andrea
Busch, Maria
Long-term variations in rodent abundance in a rural landscape of the Pampas, Argentina
topic_facet Agroecosystems
Climate variation
Land use
Rodent communities
abundance
agricultural ecosystem
agricultural practice
climate change
frost
land use change
precipitation (climatology)
rodent
rural area
seasonal variation
soybean
temperature profile
Argentina
Pampas
Akodon azarae
Calomys laucha
Glycine max
Rodentia
description The goal of this study was to analyze the variations in abundance of rodent communities over the last 24 years in a rural area, and their relation to possible changes in climatic variables and land use. The principal change in the area observed along the study period was an increase in the area covered by soybean. The habitats studied were crop fields and borders. The total abundance of rodents did not show a significant trend of variation over time in crop fields while in borders the abundance in autumn-winter (A-W) showed a significant trend to decrease over time. The different rodent species showed a differential response over time. While Calomys laucha and C. musculinus showed a decrease between the period before and after the soybean expansion, Akodon azarae did not change its abundance over time. The mean minimum temperature increased over time while the number of days with frost decreased. Total rodent abundance in A-W was positively associated with the cumulated precipitation of the previous spring-summer period and negatively with the cumulated precipitation of the same period. We conclude that rodent abundance variations in crop fields and borders of the study area are influenced by precipitation, but the observed trends of variation over time are better explained by changes in agricultural practices than by meteorological variables. © 2011 The Ecological Society of Japan.
author Fraschina, Jimena
León, Vanina Andrea
Busch, Maria
author_facet Fraschina, Jimena
León, Vanina Andrea
Busch, Maria
author_sort Fraschina, Jimena
title Long-term variations in rodent abundance in a rural landscape of the Pampas, Argentina
title_short Long-term variations in rodent abundance in a rural landscape of the Pampas, Argentina
title_full Long-term variations in rodent abundance in a rural landscape of the Pampas, Argentina
title_fullStr Long-term variations in rodent abundance in a rural landscape of the Pampas, Argentina
title_full_unstemmed Long-term variations in rodent abundance in a rural landscape of the Pampas, Argentina
title_sort long-term variations in rodent abundance in a rural landscape of the pampas, argentina
publishDate 2012
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09123814_v27_n1_p191_Fraschina
http://hdl.handle.net/20.500.12110/paper_09123814_v27_n1_p191_Fraschina
work_keys_str_mv AT fraschinajimena longtermvariationsinrodentabundanceinarurallandscapeofthepampasargentina
AT leonvaninaandrea longtermvariationsinrodentabundanceinarurallandscapeofthepampasargentina
AT buschmaria longtermvariationsinrodentabundanceinarurallandscapeofthepampasargentina
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