Optimización del uso de dispositivos GPS para estimar las áreas de uso y alimentación en aves marinas: el Cormorán Imperial como caso de estudio

Vera Gabelli-Suarez; Flavio Quintana; Agustina Gómez-Laich

doi:10.56178/eh.v41i1.1533

Artículos Publicado 14 abril 2026 https://doi.org/10.56178/eh.v41i1.1533

Optimización del uso de dispositivos GPS para estimar las áreas de uso y alimentación en aves marinas: el Cormorán Imperial como caso de estudio

áreas de uso aves GPS IBAs Sistemas de Posicionamiento Global tamaño de muestra

Vera Gabelli-Suarez Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina

Flavio Quintana Laboratorio de Ecología de Predadores Tope Marinos (LEPTOMAR), Instituto de Biología de Organismos Marinos (IBIOMAR), CONICET. Boulevard Brown 2915, U9120ACD, Puerto Madryn, Chubut, Argentina

Agustina Gómez-Laich Departamento de Ecología, Genética y Evolución & Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA), CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II Ciudad Universitaria, C1428EGA, Ciudad Autónoma de Buenos Aires, Argentina

Resumen

A pesar del extenso uso de dispositivos GPS para determinar áreas de uso, solo muy ocasionalmente se evalúa cuál es el número de individuos a instrumentar para obtener resultados estadísticamente robustos sin comprometer el bienestar animal. En este trabajo, examinamos el efecto del tamaño de muestra (i.e., número de individuos instrumentados) sobre la precisión en la estimación de las áreas marinas de uso y de alimentación del Cormorán Imperial (Leucocarbo atriceps). Analizamos la información proveniente de 140 adultos reproductores de la colonia de Punta León (Chubut, Argentina), obtenida durante siete temporadas. Estimamos el tamaño de las áreas de uso y alimentación incrementando el número de animales de uno a 20. A su vez, debido a diferencias intersexuales en el comportamiento de alimentación de la especie, calculamos el tamaño del área de uso y de alimentación de 10 hembras y 10 machos por año, incrementando el número de animales de uno a 10. En promedio, se necesitaron al menos 13 aves para alcanzar incrementos inferiores al 5% en el tamaño de las áreas. Instrumentar entre 10 y 12 machos/hembras fue suficiente para estimar las áreas de uso o alimentación de cada uno de los sexos con un error inferior al 5%. Este trabajo presenta un procedimiento sencillo para estimar el número necesario de aves a instrumentar, adaptable a otras especies con patrones de movimiento similares.

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Referencias

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Cómo citar

Vera Gabelli-Suarez, Flavio Quintana, Agustina Gómez-Laich (2026). Optimización del uso de dispositivos GPS para estimar las áreas de uso y alimentación en aves marinas: el Cormorán Imperial como caso de estudio. El Hornero, Vol. 41 Núm. 1 (2026), 47-62. https://doi.org/10.56178/eh.v41i1.1533

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[8] Blanco GS, Tonini MH, Gallo L, Dell’Omo G, Quintana F (2022) Tracking the exposure of a pelagic seabird to marine plastic pollution. Marine Pollution Bulletin 180:113767. https://doi.org/10.1016/j.marpolbul.2022.113767

[9] Bodey TW, Cleasby IR, Bell F, Parr N, Schultz A, Votier SC, Bearhop S (2018) A phylogenetically controlled meta-analysis of biologging device effects on birds: Deleterious effects and a call for more standardized reporting of study data. Methods in Ecology and Evolution 9(4):946-955. https://doi.org/10.1111/2041-210X.12934

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[13] Copello S, Seco Pon JP, Favero M (2014) Spatial overlap of Black-browed albatrosses with longline and trawl fisheries in the Patagonian Shelf during the non-breeding season. Journal of Sea Research 89:44-51. https://doi.org/10.1016/j.seares.2014.02.006

[14] Copello S, Quintana F (2009) Spatio-temporal overlap between the at-sea distribution of Southern Giant Petrels and fisheries at the Patagonian Shelf. Polar Biology 32(8):1211-1220. https://doi.org/10.1007/s00300-009-0620-7

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[19] Fishpool LD, Evans MI (2001) Important Bird Areas in Africa and associated islands: Priority sites for conservation. Pisces Publications & BirdLife International, Newbury & Cambridge UK

[20] Frere E, Quintana F, Gandini P (2005) Cormoranes de la costa patagónica: Estado poblacional, ecología y conservación. Hornero 20(1):35-52. https://doi.org/10.56178/eh.v20i1.818

[21] Gómez-Laich A, Quintana F, Shepard ELC, Wilson RP (2012) Intersexual differences in the diving behaviour of Imperial Cormorants. Journal of Ornithology 153:139-147. https://doi.org/10.1007/s10336-011-0714-1

[22] Gómez-Laich A, Wilson RP, Shepard ELC, Quintana F (2013) Energy expenditure and food consumption of foraging Imperial cormorants in Patagonia, Argentina. Marine Biology 160(7):1697-1707. https://doi.org/10.1007/s00227-013-2222-8

[23] Harris S, Raya Rey A, Phillips RA, Quintana F (2013) Sexual segregation in timing of foraging by imperial shags (Phalacrocorax atriceps): Is it always ladies first? Marine Biology 160:1249-1258. https://doi.org/10.1007/s00227-013-2177-9

[24] Harris S, Raya Rey A, Zavalaga C, Quintana F (2014) Strong temporal consistency in the individual foraging behaviour of Imperial Shags Phalacrocorax atriceps. Ibis 156(3):523-533. https://doi.org/10.1111/ibi.12159

[25] He P, Klarevas-Irby JA, Papageorgiou D, Christensen C, Strauss ED, Farine DR (2023) A guide to sampling design for GPS-based studies of animal societies. Methods in Ecology and Evolution 14(8):1887-1905. https://doi.org/10.1111/2041-210X.13999

[26] Hebblewhite M, Haydon DT (2010) Distinguishing technology from biology: A critical review of the use of GPS telemetry data in ecology. Philosophical Transactions of the Royal Society B Biological Sciences 365(1550):2303-2312. https://doi.org/10.1098/rstb.2010.0087

[27] Ibarra C, Marinao C, Suárez N, Kasinsky T, Yorio P (2022) Patterns of sexual segregation in the use of trophic resources in breeding Imperial Cormorants. Marine Biology 169(12):154. https://doi.org/10.1007/s00227-022-04143-7

[28] Johnson KA, Goody RS (2011) The original Michaelis constant: Translation of the 1913 Michaelis–Menten paper. Biochemistry 50(39):8264-8269. https://doi.org/10.1021/bi201284u

[29] Kays R, Crofoot MC, Jetz W, Wikelski M (2015) Terrestrial animal tracking as an eye on life and planet. Science 348(6240):aaa2478. https://doi.org/10.1126/science.aaa2478

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