Density-dependent habitat selection between maize cropfields and their borders in two rodent species (Akodon azarae and Calomys laucha) of Pampean agroecosystems

We studied habitat preferences and intra and interspecific density-dependent effects on habitat selection by Akodon azarae and Calomys laucha between maize fields and their adjacent borders, during different developmental stages of the crop. Akodon azarae detected quantitative differences between ha...

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Autores principales: Hodara, Karina, Busch, Maria, Kravetz, Fernando O.
Publicado: 2000
Materias:
Agroecosystems
Density-dependence
Habitat selection
Preferences
Rodents
community structure
density dependence
habitat selection
niche partitioning
rodent
Akodon azarae
Animalia
Calomys laucha
Rodentia
Zea mays
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02697653_v14_n7_p571_Hodara
http://hdl.handle.net/20.500.12110/paper_02697653_v14_n7_p571_Hodara
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_02697653_v14_n7_p571_Hodara
record_format dspace
spelling paper:paper_02697653_v14_n7_p571_Hodara2023-06-08T15:24:29Z Density-dependent habitat selection between maize cropfields and their borders in two rodent species (Akodon azarae and Calomys laucha) of Pampean agroecosystems Hodara, Karina Busch, Maria Kravetz, Fernando O. Agroecosystems Density-dependence Habitat selection Preferences Rodents community structure density dependence habitat selection niche partitioning rodent Akodon azarae Animalia Calomys laucha Rodentia Zea mays We studied habitat preferences and intra and interspecific density-dependent effects on habitat selection by Akodon azarae and Calomys laucha between maize fields and their adjacent borders, during different developmental stages of the crop. Akodon azarae detected quantitative differences between habitats, using preferentially borders throughout the year, while C. laucha perceived borders and cropfields as quantitatively similar during spring and summer and it detected borders as quantitatively better at the high density period (autumn and winter). These results support the prediction of differential habitat preferences as a model of community organisation at the low density period, while they are consistent with shared habitat preferences during autumn and winter when both species apparently coexist in the better habitat (border). Akodon azarae showed intraspecific density-dependent habitat selection throughout the year, except in spring, while habitat selection by C. laucha was density-dependent in spring, autumn and winter. The effect of interspecific density on habitat selection was detected in both habitats and changed seasonally. The effect of A. azarae over C. laucha by resources exploitation was detected in borders, while competitive effects of C. laucha over A. azarae was observed within cropfields. Both species were more affected by exploitation competition than interference, which was more common in borders than in maize fields. We conclude that seasonally have a profound effect in habitat selection of these species because it changes the intensity of intra and interspecific competition and affects different habitat preferences and basic suitability of habitats. Fil:Hodara, K. 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. Fil:Kravetz, F.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2000 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02697653_v14_n7_p571_Hodara http://hdl.handle.net/20.500.12110/paper_02697653_v14_n7_p571_Hodara
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
Density-dependence
Habitat selection
Preferences
Rodents
community structure
density dependence
habitat selection
niche partitioning
rodent
Akodon azarae
Animalia
Calomys laucha
Rodentia
Zea mays
spellingShingle Agroecosystems
Density-dependence
Habitat selection
Preferences
Rodents
community structure
density dependence
habitat selection
niche partitioning
rodent
Akodon azarae
Animalia
Calomys laucha
Rodentia
Zea mays
Hodara, Karina
Busch, Maria
Kravetz, Fernando O.
Density-dependent habitat selection between maize cropfields and their borders in two rodent species (Akodon azarae and Calomys laucha) of Pampean agroecosystems
topic_facet Agroecosystems
Density-dependence
Habitat selection
Preferences
Rodents
community structure
density dependence
habitat selection
niche partitioning
rodent
Akodon azarae
Animalia
Calomys laucha
Rodentia
Zea mays
description We studied habitat preferences and intra and interspecific density-dependent effects on habitat selection by Akodon azarae and Calomys laucha between maize fields and their adjacent borders, during different developmental stages of the crop. Akodon azarae detected quantitative differences between habitats, using preferentially borders throughout the year, while C. laucha perceived borders and cropfields as quantitatively similar during spring and summer and it detected borders as quantitatively better at the high density period (autumn and winter). These results support the prediction of differential habitat preferences as a model of community organisation at the low density period, while they are consistent with shared habitat preferences during autumn and winter when both species apparently coexist in the better habitat (border). Akodon azarae showed intraspecific density-dependent habitat selection throughout the year, except in spring, while habitat selection by C. laucha was density-dependent in spring, autumn and winter. The effect of interspecific density on habitat selection was detected in both habitats and changed seasonally. The effect of A. azarae over C. laucha by resources exploitation was detected in borders, while competitive effects of C. laucha over A. azarae was observed within cropfields. Both species were more affected by exploitation competition than interference, which was more common in borders than in maize fields. We conclude that seasonally have a profound effect in habitat selection of these species because it changes the intensity of intra and interspecific competition and affects different habitat preferences and basic suitability of habitats.
author Hodara, Karina
Busch, Maria
Kravetz, Fernando O.
author_facet Hodara, Karina
Busch, Maria
Kravetz, Fernando O.
author_sort Hodara, Karina
title Density-dependent habitat selection between maize cropfields and their borders in two rodent species (Akodon azarae and Calomys laucha) of Pampean agroecosystems
title_short Density-dependent habitat selection between maize cropfields and their borders in two rodent species (Akodon azarae and Calomys laucha) of Pampean agroecosystems
title_full Density-dependent habitat selection between maize cropfields and their borders in two rodent species (Akodon azarae and Calomys laucha) of Pampean agroecosystems
title_fullStr Density-dependent habitat selection between maize cropfields and their borders in two rodent species (Akodon azarae and Calomys laucha) of Pampean agroecosystems
title_full_unstemmed Density-dependent habitat selection between maize cropfields and their borders in two rodent species (Akodon azarae and Calomys laucha) of Pampean agroecosystems
title_sort density-dependent habitat selection between maize cropfields and their borders in two rodent species (akodon azarae and calomys laucha) of pampean agroecosystems
publishDate 2000
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02697653_v14_n7_p571_Hodara
http://hdl.handle.net/20.500.12110/paper_02697653_v14_n7_p571_Hodara
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AT buschmaria densitydependenthabitatselectionbetweenmaizecropfieldsandtheirbordersintworodentspeciesakodonazaraeandcalomyslauchaofpampeanagroecosystems
AT kravetzfernandoo densitydependenthabitatselectionbetweenmaizecropfieldsandtheirbordersintworodentspeciesakodonazaraeandcalomyslauchaofpampeanagroecosystems
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