Uso de hábitat por aves rapaces en un agroecosistema pampeano

Lucas M. Leveau; Carlos M. Leveau

doi:10.56178/eh.v17i1.884

Articles Published 01 August 2002 https://doi.org/10.56178/eh.v17i1.884

Habitat use by raptors in a Pampean agroecosystem

habitat use Pampean agroecosystem raptors seasonality

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

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.

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References

BABCOCK K (1995) Home range and habitat use of breeding Swainson's Hawk in the Sacramento Valley of California. Journal of Raptor Research 29:193–197.
BAKER J Y BROOKS R (1981) Distribution patterns of raptors in relation to density of meadow voles. Condor 83:42–47.
BECHARD MJ (1982) Effect of vegetative cover on foraging site selection by Swainson's Hawk. Condor 84:153–159.
BERRY M, BOCK C Y HAIRE S (1998) Abundance of diurnal raptors on open space grasslands in an urbanized landscape. Condor 100:601–608.
BOSAKOWSKI T Y SMITH D (1997) Distribution and species richness of a forest raptor community in relation to urbanization. Journal of Raptor Research 31:26–33.
COLLOPY MW Y BILDSTEIN KL (1987) Foraging behavior of Northern Harriers wintering in southeastern salt and freshwater marshes. Auk 104:11–16.
COMPARATORE VM, MARTÍNEZ MM, VASSALLO AI, BARG M Y ISACCH JP (1996) Abundancia y relaciones con el hábitat de aves y mamíferos en pastizales de Paspalum quadrifarium (Paja colorada) manejados con fuego (Provincia de Buenos Aires, Argentina). Interciencia 21:228–237.
DONÁZAR JA, NEGRO JJ Y HIRALDO F (1993) Foraging habitat selection, land-use changes and population decline in the Lesser Kestrel Falco naumanni. Journal of Applied Ecology 30:515–522.
ESTEP JA (1989) Biology, movements and habitat relationships of the Swainson's hawk in the Central Valley of California, 1986–87. Nongame Bird and Mammal Sec. Report, Calif. Dept. Fish and Game, Sacramento.
GALBRAITH H (1988) Effects of agriculture on the breeding ecology of lapwings Vanellus vanellus. Journal of Applied Ecology 25:487–503.
HAYES FE (1991) Raptor densities along the Paraguay river: seasonal, geographical and time of day variation. Journal of Raptor Research 25:101–108.
DEL HOYO J, ELLIOT A Y SARGATAL J (1994) Handbook of the birds of the world. Volume 2. New World vultures to guineafowl. Lynx Edicions, Barcelona.
KOTLIAR NB Y WIENS JA (1990) Multiple scales of patchiness and patch structure: a hierarchical framework for the study of heterogeneity. Oikos 59: 253–260.
LEVEAU LM, LEVEAU CM Y PARDIÑAS UFJ (en prensa) Dieta del Milano Blanco (Elanus leucurus) en Argentina. Ornitología Neotropical.
MILLS JN, ELLIS BA, MCKEE KT, MAIZTEGUI JI Y CHILDS JE (1991) Habitat associations and relative densities of rodent populations in cultivated areas of central Argentina. Journal of Mammalogy 72:470–479.
NEWTON I (1979) Population ecology of raptors. T. & A. D. Poyser, Londres.
PRESTON C (1990) Distribution of raptor foraging in relation to prey biomass and habitat structure. Condor 92:107–112.
ROBINSON RA, WILSON JD Y CRICK HQP (2001) The importance of arable habitat for farmland birds in grassland landscapes. Journal of Applied Ecology 38:1059–1069.
ROBINSON SK (1994) Habitat selection and foraging ecology of raptors in Amazonian Perú. Biotropica 26:443–458.
ROTENBERRY JT Y KNICK ST (1999) Multiscale habitat associations of the sage sparrow: implications for conservation biology. Studies in Avian Biology 19:95–103

How to cite

Lucas M. Leveau, Carlos M. Leveau (2002). Habitat use by raptors in a Pampean agroecosystem. El Hornero, Vol. 17 No. 1 (2002), 9-15. https://doi.org/10.56178/eh.v17i1.884

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[1] BABCOCK K (1995) Home range and habitat use of breeding Swainson's Hawk in the Sacramento Valley of California. Journal of Raptor Research 29:193–197.

[2] BAKER J Y BROOKS R (1981) Distribution patterns of raptors in relation to density of meadow voles. Condor 83:42–47.

[3] BECHARD MJ (1982) Effect of vegetative cover on foraging site selection by Swainson's Hawk. Condor 84:153–159.

[4] BERRY M, BOCK C Y HAIRE S (1998) Abundance of diurnal raptors on open space grasslands in an urbanized landscape. Condor 100:601–608.

[5] BOSAKOWSKI T Y SMITH D (1997) Distribution and species richness of a forest raptor community in relation to urbanization. Journal of Raptor Research 31:26–33.

[6] COLLOPY MW Y BILDSTEIN KL (1987) Foraging behavior of Northern Harriers wintering in southeastern salt and freshwater marshes. Auk 104:11–16.

[7] COMPARATORE VM, MARTÍNEZ MM, VASSALLO AI, BARG M Y ISACCH JP (1996) Abundancia y relaciones con el hábitat de aves y mamíferos en pastizales de Paspalum quadrifarium (Paja colorada) manejados con fuego (Provincia de Buenos Aires, Argentina). Interciencia 21:228–237.

[8] DONÁZAR JA, NEGRO JJ Y HIRALDO F (1993) Foraging habitat selection, land-use changes and population decline in the Lesser Kestrel Falco naumanni. Journal of Applied Ecology 30:515–522.

[9] ESTEP JA (1989) Biology, movements and habitat relationships of the Swainson's hawk in the Central Valley of California, 1986–87. Nongame Bird and Mammal Sec. Report, Calif. Dept. Fish and Game, Sacramento.

[10] GALBRAITH H (1988) Effects of agriculture on the breeding ecology of lapwings Vanellus vanellus. Journal of Applied Ecology 25:487–503.

[11] HAYES FE (1991) Raptor densities along the Paraguay river: seasonal, geographical and time of day variation. Journal of Raptor Research 25:101–108.

[12] DEL HOYO J, ELLIOT A Y SARGATAL J (1994) Handbook of the birds of the world. Volume 2. New World vultures to guineafowl. Lynx Edicions, Barcelona.

[13] KOTLIAR NB Y WIENS JA (1990) Multiple scales of patchiness and patch structure: a hierarchical framework for the study of heterogeneity. Oikos 59: 253–260.

[14] LEVEAU LM, LEVEAU CM Y PARDIÑAS UFJ (en prensa) Dieta del Milano Blanco (Elanus leucurus) en Argentina. Ornitología Neotropical.

[15] MILLS JN, ELLIS BA, MCKEE KT, MAIZTEGUI JI Y CHILDS JE (1991) Habitat associations and relative densities of rodent populations in cultivated areas of central Argentina. Journal of Mammalogy 72:470–479.

[16] NEWTON I (1979) Population ecology of raptors. T. & A. D. Poyser, Londres.

[17] PRESTON C (1990) Distribution of raptor foraging in relation to prey biomass and habitat structure. Condor 92:107–112.

[18] ROBINSON RA, WILSON JD Y CRICK HQP (2001) The importance of arable habitat for farmland birds in grassland landscapes. Journal of Applied Ecology 38:1059–1069.

[19] ROBINSON SK (1994) Habitat selection and foraging ecology of raptors in Amazonian Perú. Biotropica 26:443–458.

[20] ROTENBERRY JT Y KNICK ST (1999) Multiscale habitat associations of the sage sparrow: implications for conservation biology. Studies in Avian Biology 19:95–103