Seasonal changes in microhabitat use and niche overlap between Akodon azarae and Calomys laucha (Rodentia, Muridae) in agroecosystems of central Argentina
We examined seasonal changes in microhabitat use by the murid rodents Akodon azarae and Calomys laucha in agroecosystems of the former pampa region of Argentina. In summer, trap data showed that both species had low densities and were almost equally distributed between the mature cropfields and thei...
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| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
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Swets en Zeitlinger B.V.
1999
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
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| LEADER | 08547caa a22008297a 4500 | ||
|---|---|---|---|
| 001 | PAPER-2487 | ||
| 003 | AR-BaUEN | ||
| 005 | 20250313143455.0 | ||
| 008 | 190411s1999 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-0033390598 | |
| 030 | |a SNFED | ||
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Bilenca, David Norberto | |
| 245 | 1 | 0 | |a Seasonal changes in microhabitat use and niche overlap between Akodon azarae and Calomys laucha (Rodentia, Muridae) in agroecosystems of central Argentina |
| 260 | |b Swets en Zeitlinger B.V. |c 1999 | ||
| 270 | 1 | 0 | |m Bilenca, D.N.; Departamento de Ciencias Biologicas, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellon II, 4 Piso, 1428 Buenos Aires, Argentina; email: dbilenca@bg.fcen.uba.ar |
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| 504 | |a Bilenca, D.N., Kravetz, F.O., Zuleta, G.A., Food habits of Akodon azarae and Calomys laucha in agroecosystems of central Argentina (1992) Mammalia, 56, pp. 371-383 | ||
| 504 | |a Bilenca, D.N., Kravetz, F.O., Seasonal variations in microhabitat use and food habits of the Pampas mouse, Akodon azarae, in agroecosystems of central Argentina (1998) Acta Theriologica, 43, pp. 195-203 | ||
| 504 | |a Bonaventura, S.M., Kravetz, F.O., Suárez, O.V., The relationship between food availability, space use and territoriality in Akodon azarae (1992) Mammalia, 56, pp. 407-416 | ||
| 504 | |a Bosakowski, T., Smith, D.G., Speiser, R., Niche overlap of two sympatric-nesting hawks Accipiter sp. in the New Jersey - New York highlands (1992) Ecography, 15, pp. 358-372 | ||
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| 504 | |a Mills, J.N., Ellis, B.A., McKee, K.T., Maiztegui, J.I., Childs, J.E., Habitat associations and relative densities of rodent populations in cultivated areas of central Argentina (1991) J Mamm, 72, pp. 47-479 | ||
| 504 | |a Mills, J.N., Ellis, B.A., McKee, K.T., Maiztegui, J.I., Childs, J.E., Reproductive characteristics of the rodent community in cultivated areas of central Argentina (1992) J Mamm, 73, pp. 515-526 | ||
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| 504 | |a Schoener, T.W., Resource partitioning in ecological communities (1974) Science, 174, pp. 27-37 | ||
| 506 | |2 openaire |e Política editorial | ||
| 520 | 3 | |a We examined seasonal changes in microhabitat use by the murid rodents Akodon azarae and Calomys laucha in agroecosystems of the former pampa region of Argentina. In summer, trap data showed that both species had low densities and were almost equally distributed between the mature cropfields and their surrounding weedy borders. Analysis of vegetation at the trap sites revealed no selection for microhabitats at the borders, whereas in the cropfields both species shared preferences for covered microhabitats. In contrast, winter data revealed a sharp habitat segregation, being Calomys numerically dominant in post-harvest cropfields and Akodon more abundant in borders. Moreover, there were clear differences in microhabitat selection at the borders, A. azarae occupying the more covered microhabitats and C. laucha the less covered. Breadth and overlap of niches were calculated using principal component analysis, in order to recognize interspecific competition and its influence on community niche space. Available evidence indicates that the structure of this rodent community is strongly influenced by seasonal changes in habitat structure and rodent abundance. The socially dominant A. azarae retains the best part of the available niche space, a fact becoming more evident under the harsh winter conditions. |l eng | |
| 536 | |a Detalles de la financiación: Universidad de Buenos Aires | ||
| 536 | |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas | ||
| 536 | |a Detalles de la financiación: We are grateful to M. Busch and K. Hodara for reading and commenting on the manuscript. This study was funded by grants of the CONICET (Argentina) and the University of Buenos Aires. | ||
| 593 | |a Depto. de Ciencias Biológicas, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, (1428), Buenos Aires, Argentina | ||
| 651 | 4 | |a ARGENTINA | |
| 690 | 1 | 0 | |a AGROECOSYSTEMS |
| 690 | 1 | 0 | |a AKODON AZARAE |
| 690 | 1 | 0 | |a CALOMYS LAUCHA |
| 690 | 1 | 0 | |a HABITAT SELECTION |
| 690 | 1 | 0 | |a MURID RODENTS |
| 690 | 1 | 0 | |a NICHE OVERLAP |
| 690 | 1 | 0 | |a SEASONALITY |
| 690 | 1 | 0 | |a AKODON AZARAE |
| 690 | 1 | 0 | |a AKODON AZARAE |
| 690 | 1 | 0 | |a CALOMYS LAUCHA |
| 690 | 1 | 0 | |a CALOMYS LAUCHA |
| 690 | 1 | 0 | |a MURIDAE |
| 690 | 1 | 0 | |a RODENTIA |
| 700 | 1 | |a Kravetz, F.O. | |
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