Patterns of macro and microhabitat use of two rodent species in relation to agricultural practices
Habitat selection may reflect the location of the home ranges or the allocation of shelter and foraging sites within a given habitat. We studied seasonal patterns of habitat use by Akodon azarae and Calomys laucha at two spatial scales: between maize fields and their weedy edges (macrohabitats), and...
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todo:paper_09123814_v25_n1_p113_Hodara2023-10-03T15:44:39Z Patterns of macro and microhabitat use of two rodent species in relation to agricultural practices Hodara, K. Busch, M. Agroecosystems Akodon azarae Calomys laucha Habitat use Spatial scales abundance agricultural land agricultural practice dicotyledon ecological impact edge effect foraging behavior habitat use heterogeneity home range maize maturation microhabitat plant-herbivore interaction rodent season vegetation cover weed Akodon azarae Calomys laucha Dicotyledoneae Rodentia Viridiplantae Zea mays Habitat selection may reflect the location of the home ranges or the allocation of shelter and foraging sites within a given habitat. We studied seasonal patterns of habitat use by Akodon azarae and Calomys laucha at two spatial scales: between maize fields and their weedy edges (macrohabitats), and associations of rodents captures with vegetation variables at the trap site level (microhabitats). We evaluated if the different habitat uses were related to disturbances generated by practices associated to maize cycle. A. azarae used mainly field edges, but it showed an increased use of maize fields when the crop reached maturity in summer. Contrarily, C. laucha used maize fields in a higher proportion than edges in all seasons. C. laucha was more influenced by microhabitat characteristics than A. azarae. C. laucha was present in sites with abundant dicot weeds when maize was growing up, while it was associated to sites with weeds with scarce cover in stubble maize fields. Before harvesting, both species were segregated at the microscale within maize fields. A. azarae was related to sites with high availability of green plant cover and C. laucha occupied low-quality sites, probably attributed to differences in their diets. We conclude that the pattern of habitat use by both species is best predicted at the macrohabitat scale, and when they are impoverished and present internal heterogeneity, there is selection at microhabitat scale of those better sites. While A. azarae responds to changes in vegetation cover and habitat structure associated to agricultural practices, C. laucha uses cropfields in an opportunistic way, affected by interspecific competition. © The Ecological Society of Japan 2009. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09123814_v25_n1_p113_Hodara |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Agroecosystems Akodon azarae Calomys laucha Habitat use Spatial scales abundance agricultural land agricultural practice dicotyledon ecological impact edge effect foraging behavior habitat use heterogeneity home range maize maturation microhabitat plant-herbivore interaction rodent season vegetation cover weed Akodon azarae Calomys laucha Dicotyledoneae Rodentia Viridiplantae Zea mays |
| spellingShingle |
Agroecosystems Akodon azarae Calomys laucha Habitat use Spatial scales abundance agricultural land agricultural practice dicotyledon ecological impact edge effect foraging behavior habitat use heterogeneity home range maize maturation microhabitat plant-herbivore interaction rodent season vegetation cover weed Akodon azarae Calomys laucha Dicotyledoneae Rodentia Viridiplantae Zea mays Hodara, K. Busch, M. Patterns of macro and microhabitat use of two rodent species in relation to agricultural practices |
| topic_facet |
Agroecosystems Akodon azarae Calomys laucha Habitat use Spatial scales abundance agricultural land agricultural practice dicotyledon ecological impact edge effect foraging behavior habitat use heterogeneity home range maize maturation microhabitat plant-herbivore interaction rodent season vegetation cover weed Akodon azarae Calomys laucha Dicotyledoneae Rodentia Viridiplantae Zea mays |
| description |
Habitat selection may reflect the location of the home ranges or the allocation of shelter and foraging sites within a given habitat. We studied seasonal patterns of habitat use by Akodon azarae and Calomys laucha at two spatial scales: between maize fields and their weedy edges (macrohabitats), and associations of rodents captures with vegetation variables at the trap site level (microhabitats). We evaluated if the different habitat uses were related to disturbances generated by practices associated to maize cycle. A. azarae used mainly field edges, but it showed an increased use of maize fields when the crop reached maturity in summer. Contrarily, C. laucha used maize fields in a higher proportion than edges in all seasons. C. laucha was more influenced by microhabitat characteristics than A. azarae. C. laucha was present in sites with abundant dicot weeds when maize was growing up, while it was associated to sites with weeds with scarce cover in stubble maize fields. Before harvesting, both species were segregated at the microscale within maize fields. A. azarae was related to sites with high availability of green plant cover and C. laucha occupied low-quality sites, probably attributed to differences in their diets. We conclude that the pattern of habitat use by both species is best predicted at the macrohabitat scale, and when they are impoverished and present internal heterogeneity, there is selection at microhabitat scale of those better sites. While A. azarae responds to changes in vegetation cover and habitat structure associated to agricultural practices, C. laucha uses cropfields in an opportunistic way, affected by interspecific competition. © The Ecological Society of Japan 2009. |
| format |
JOUR |
| author |
Hodara, K. Busch, M. |
| author_facet |
Hodara, K. Busch, M. |
| author_sort |
Hodara, K. |
| title |
Patterns of macro and microhabitat use of two rodent species in relation to agricultural practices |
| title_short |
Patterns of macro and microhabitat use of two rodent species in relation to agricultural practices |
| title_full |
Patterns of macro and microhabitat use of two rodent species in relation to agricultural practices |
| title_fullStr |
Patterns of macro and microhabitat use of two rodent species in relation to agricultural practices |
| title_full_unstemmed |
Patterns of macro and microhabitat use of two rodent species in relation to agricultural practices |
| title_sort |
patterns of macro and microhabitat use of two rodent species in relation to agricultural practices |
| url |
http://hdl.handle.net/20.500.12110/paper_09123814_v25_n1_p113_Hodara |
| work_keys_str_mv |
AT hodarak patternsofmacroandmicrohabitatuseoftworodentspeciesinrelationtoagriculturalpractices AT buschm patternsofmacroandmicrohabitatuseoftworodentspeciesinrelationtoagriculturalpractices |
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