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Abstract:

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.

Registro:

Documento: Artículo
Título:Patterns of macro and microhabitat use of two rodent species in relation to agricultural practices
Autor:Hodara, K.; Busch, M.
Filiación:Departamento de Métodos Cuantitativos y Sistemas de Información, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, C1417DSE Buenos Aires, Argentina
Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, CONICET, Av. Cantilo s/n Ciudad Universitaria. Pabellón 2, C1428EHA Buenos Aires, Argentina
Palabras clave: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
Año:2010
Volumen:25
Número:1
Página de inicio:113
Página de fin:121
DOI: http://dx.doi.org/10.1007/s11284-009-0638-x
Título revista:Ecological Research
Título revista abreviado:Ecol. Res.
ISSN:09123814
CODEN:ECRSE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09123814_v25_n1_p113_Hodara

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Citas:

---------- APA ----------
Hodara, K. & Busch, M. (2010) . Patterns of macro and microhabitat use of two rodent species in relation to agricultural practices. Ecological Research, 25(1), 113-121.
http://dx.doi.org/10.1007/s11284-009-0638-x
---------- CHICAGO ----------
Hodara, K., Busch, M. "Patterns of macro and microhabitat use of two rodent species in relation to agricultural practices" . Ecological Research 25, no. 1 (2010) : 113-121.
http://dx.doi.org/10.1007/s11284-009-0638-x
---------- MLA ----------
Hodara, K., Busch, M. "Patterns of macro and microhabitat use of two rodent species in relation to agricultural practices" . Ecological Research, vol. 25, no. 1, 2010, pp. 113-121.
http://dx.doi.org/10.1007/s11284-009-0638-x
---------- VANCOUVER ----------
Hodara, K., Busch, M. Patterns of macro and microhabitat use of two rodent species in relation to agricultural practices. Ecol. Res. 2010;25(1):113-121.
http://dx.doi.org/10.1007/s11284-009-0638-x