Uso de hábitat por aves rapaces en un agroecosistema pampeano

Lucas M. Leveau; Carlos M. Leveau

doi:10.56178/eh.v17i1.884

Vol. 17 No. 1 (2002), Articles

Vol. 17 No. 1 (2002)

Habitat use by raptors in a Pampean agroecosystem

Articles

Published 01-08-2002

Lucas M. Leveau⁺⁻
Carlos M. Leveau⁺⁻

Lucas M. Leveau

Alte. Brown 2420 1°A, 7600 Mar del Plata, Buenos Aires, Argentina

Carlos M. Leveau

Alte. Brown 2420 1°A, 7600 Mar del Plata, Buenos Aires, Argentina

PDF (Spanish)

Keywords

habitat use
Pampean agroecosystem
raptors
seasonality

How to Cite

Leveau, Lucas M., and Carlos M. Leveau. 2002. “Habitat Use by Raptors in a Pampean Agroecosystem”. El Hornero 17 (1): 9-15. https://doi.org/10.56178/eh.v17i1.884.

Abstract

We counted raptors in two transects (A and B) in an agroecosystem located in south-eastern Buenos Aires Province, in order to quantify habitat use. We recorded six species of diurnal raptors: Elanus leucurus, Circus cinereus, Circus buffoni, Milvago chimango, Falco femoralis and Falco sparverius. In the transect A we observed all six species. Most of them used harvested wheat fields in a greater or similar proportion respect to their availability during summer and autumn. Elanus leucurus used pastures in a greater or similar proportion respect to their availability during summer, autumn and winter, whereas Milvago chimango used them during summer and autumn. In transect B we recorded only Elanus leucurus, Milvago chimango and Falco sparverius while hunting. Elanus leucurus hunted in harvested soybean fields in a greater or similar proportion respect to their availability during autumn, and hunted heavily in pastures. Falco sparverius used mountain grassland habitats. In both transects, only Milvago chimango hunted in plowed fields, and most species avoided or showed little use of crop fields. In transect A, raptors hunted more frequently during autumn; in transect B they hunted more frequently during summer. Milvago chimango hunted more frequently during winter in both transects. The selection of hunting habitat that we observed in this study might be more influenced by prey accessibility than by prey abundance.

PDF (Spanish)

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