Habitat selection and interspecific competition in rodents in pampean agroecosystems

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We analyzed the effect of density-dependent habitat selection and interspecific competition on the use of space by small rodent species in agroecosystems. We studied rodent abundance in cropfields and their borders, weedy margins less disturbed by agricultural activities. We could distinguish two ki...

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Autores principales: Busch, M., Alvarez, M.R., Cittadino, E.A., Kravetz, F.O.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 1997
Materias:
density dependence
habitat use
interspecific competition
rodent
Akodon azarae
Calomys laucha
Calomys musculinus
Oligoryzomys flavescens
Rodentia
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00251461_v61_n2_p167_Busch
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paperaa:paper_00251461_v61_n2_p167_Busch2023-06-12T16:45:05Z Habitat selection and interspecific competition in rodents in pampean agroecosystems MAMMALIA 1997;61(2):167-184 Busch, M. Alvarez, M.R. Cittadino, E.A. Kravetz, F.O. density dependence habitat use interspecific competition rodent Akodon azarae Akodon azarae Calomys laucha Calomys laucha Calomys musculinus Calomys musculinus Oligoryzomys flavescens Oligoryzomys flavescens Rodentia We analyzed the effect of density-dependent habitat selection and interspecific competition on the use of space by small rodent species in agroecosystems. We studied rodent abundance in cropfields and their borders, weedy margins less disturbed by agricultural activities. We could distinguish two kind of species: those habitat intolerants, Akodon azarae and Oligoryzomys flavescens, which select the borders, and those habitat tolerants, Calomys laucha and Calomys musculinus. The two most abundant species in the community, A. azarae and C. Laucha, differ in their habitat use: while the first has a clear preference for borders, the other is more equally distributed between habitats, although it is more abundant in fields. Both species show a shift towards an increased use of fields via density-dependent habitat selection with increasing abundance at some moments of the year. C. musculinus does not show habitat preference in any season, overlaping with the other species in both habitats. There is an interspecific effect on habitat use between A. azarae and C. laucha : While the first species cause a shift in habitat preference of C. laucha towards fields, this latter species affects the density-dependent habitat use of A. azarae. It is concluded that the pattern of habitat use of the studied species is affected by their differential preferences as well as by intra and interspecific density-dependent processes that change seasonally. Fil:Busch, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cittadino, E.A. 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. 1997 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00251461_v61_n2_p167_Busch
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
topic density dependence
habitat use
interspecific competition
rodent
Akodon azarae
Akodon azarae
Calomys laucha
Calomys laucha
Calomys musculinus
Calomys musculinus
Oligoryzomys flavescens
Oligoryzomys flavescens
Rodentia
spellingShingle density dependence
habitat use
interspecific competition
rodent
Akodon azarae
Akodon azarae
Calomys laucha
Calomys laucha
Calomys musculinus
Calomys musculinus
Oligoryzomys flavescens
Oligoryzomys flavescens
Rodentia
Busch, M.
Alvarez, M.R.
Cittadino, E.A.
Kravetz, F.O.
Habitat selection and interspecific competition in rodents in pampean agroecosystems
topic_facet density dependence
habitat use
interspecific competition
rodent
Akodon azarae
Akodon azarae
Calomys laucha
Calomys laucha
Calomys musculinus
Calomys musculinus
Oligoryzomys flavescens
Oligoryzomys flavescens
Rodentia
description We analyzed the effect of density-dependent habitat selection and interspecific competition on the use of space by small rodent species in agroecosystems. We studied rodent abundance in cropfields and their borders, weedy margins less disturbed by agricultural activities. We could distinguish two kind of species: those habitat intolerants, Akodon azarae and Oligoryzomys flavescens, which select the borders, and those habitat tolerants, Calomys laucha and Calomys musculinus. The two most abundant species in the community, A. azarae and C. Laucha, differ in their habitat use: while the first has a clear preference for borders, the other is more equally distributed between habitats, although it is more abundant in fields. Both species show a shift towards an increased use of fields via density-dependent habitat selection with increasing abundance at some moments of the year. C. musculinus does not show habitat preference in any season, overlaping with the other species in both habitats. There is an interspecific effect on habitat use between A. azarae and C. laucha : While the first species cause a shift in habitat preference of C. laucha towards fields, this latter species affects the density-dependent habitat use of A. azarae. It is concluded that the pattern of habitat use of the studied species is affected by their differential preferences as well as by intra and interspecific density-dependent processes that change seasonally.
format Artículo
Artículo
publishedVersion
author Busch, M.
Alvarez, M.R.
Cittadino, E.A.
Kravetz, F.O.
author_facet Busch, M.
Alvarez, M.R.
Cittadino, E.A.
Kravetz, F.O.
author_sort Busch, M.
title Habitat selection and interspecific competition in rodents in pampean agroecosystems
title_short Habitat selection and interspecific competition in rodents in pampean agroecosystems
title_full Habitat selection and interspecific competition in rodents in pampean agroecosystems
title_fullStr Habitat selection and interspecific competition in rodents in pampean agroecosystems
title_full_unstemmed Habitat selection and interspecific competition in rodents in pampean agroecosystems
title_sort habitat selection and interspecific competition in rodents in pampean agroecosystems
publishDate 1997
url http://hdl.handle.net/20.500.12110/paper_00251461_v61_n2_p167_Busch
work_keys_str_mv AT buschm habitatselectionandinterspecificcompetitioninrodentsinpampeanagroecosystems
AT alvarezmr habitatselectionandinterspecificcompetitioninrodentsinpampeanagroecosystems
AT cittadinoea habitatselectionandinterspecificcompetitioninrodentsinpampeanagroecosystems
AT kravetzfo habitatselectionandinterspecificcompetitioninrodentsinpampeanagroecosystems
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