Sumario Histórico de Proyectos e Investigaciones Científicas 1984 - 2000 Resumen de los proyectos e investigaciones realizados en el período mencionado, con detalles de entidad responsable y breve descripción de cada uno. (descargar en pdf)

Otras publicaciones

"La conexión Antártico-Magallánico: Diversidad y biogeografía de microturbelorios intersticiales del Arco de Escocia" de la M. Sc. Odile Volonterio del Programa de Desarrollo de las Ciencias Básicas de la Universidad de la República (PEDECIBA).

Por mayor información consultar al mail: odile@fcien.edu.uy

Laboratorio de Zoología Invertebrados,

Facultad de Ciencias, Iguá 4225 (Piso 8-Sur) - C.P. 11400

Montevideo, Uruguay.

Artículo de difusión en inglés: "Taking the pulse of Antarctica" escrito por la Lic. Angela Quartarolo

Artículo de difusión en italiano: "Studio psicosociale delle basi Antartiche Uruguayane". por Angela Quartarolo y Antonio Peri publicado en Giornale di Medicina Militare.

ABSTRACT: Adult penguins and their chicks differ considerably in their apparent body insulation. The chicks are covered in down, whereas the adults have the short, hard body feathers characteristic of the family, so mechanisms of heat loss may vary considerably between the two groups. We examined radiative heat loss by measuring body surface temperatures of gentoo penguins (Pygoscdis papua) in Antárctica. At the time the birds were considered to be in their thermoneutral zone, and there was little or no wind. Measurements of infrared emission were made on breeding adults and in large downy, and thermally independent, chicks in relation to environmental temperature.

All 28 external body surface sites measured were positively correlated with ambient temperature, although there was considerable intersite variability in the relationship between site temperature and ambient temperature. Foot temperature increased most rapidly per degree ambient temperature increase, followed by the flippers, followed by the trunk. This pattern was particularly pronounced in the chicks, indicating that the exceptional heat-loss capacities of the feet may counteract for the reduced capacity of the flippers. Net heat transfer by radiation was examined using Stefan-Boltzmann's law and preliminary data on the surface area of a gentoo penguin body.

This showed that between ground temperatures of 5° and 15°C overall heat transfer remains essentially constant, although radiative heat loss from the trunk decreases, this being counteracted by increasing heat transfer from the flippers and feet.

Over the same temperature range the specific radiation heat transfer of the feet increased approximately 100 times faster  per degree ambient temperature increase than did that of the flippers. This and the bimodality in foot temperature found in the study birds even under constant ambient temperatures indicate that within the thermoneutral zone heat loss by radiation in gentoo penguins is primarily executed using the feet, through which the blood circulates in pulses.

Rory P. Wilson1,* Dieter Adelung1, Leonardo Latorre 2

'Institut für Meereskunde, Düsternbrooker Weg 20, D-24105

Kiel, Germany; 2Instituto Antárctico Uruguayo, 8 de Octubre

2958, Montevideo, Uruguay - Accepted 4/16/98

The movements of gentoo penguins Pygoscelis papua from Ardley Island, Antarctica

Abstract: The movements of gentoo penguins (Pygoscelis papua) in Antarctica were studied by equipping a total of 37 birds captured at Ardley Island, South Shetlands between December 1991 and May 1996 with position-determining devices. Information on area usage was derived from 20 of' these devices and covered the incubation period (N = 3 birds), the chick-rearing period (N = 14 birds) and the over-wintering period (N = 3 birds). During incubation birds only ventured further than 50 km from the colony 20% of the time and no individual ranged further than 200 km from the colony. In contrast, no individuals attending chicks ranged further than 16 km from the colony. During winter the maximum distance ranged from the colony was 268 km. Mean distances between the birds and the colony were 80, 81 and 127 km.  Individual birds tended to associate with one spot, making short (10 day) forays away before returning to nodal areas. The ranging capacity of gentoo penguins appears considerably less than that of sympatric congeners and may reflect the ability of gentoo penguins to dive deeper and thus exploit prey not accessible to congeners.

 

R.P. Wilson, · B. Alvarrez, · L.Latorre,· D. Adelung, B. Culik · R. Bannasch

Received: 1 October 1997 /Accepted: 3 February 1998

EVIDENCIAS DEL CALENTAMIENTO GLOBAL EN GLACIARES DE LA PERIFERIA ANTÁRTICA.

CONSECUENCIAS: INCREMENTO DEL RIESGO OBJETIVO EN LAS ACTIVIDADES A DESARROLLAR EN DICHOS GLACIARES

Proyecto GLACKMA: glackma@yahoo.es
Adolfo Eraso,  Carmen Domínguez

 

El glaciar Collins (isla Rey Jorge - Shetland del Sur) como sensor natural del calentamiento global en la Antártida

Implementación de una Cuenca Piloto Experimental, con registro continuo plurianual de la descarga hídrica glaciar (Expediciones “Antártida 2000” y “Antártida 2002”)

A. Eraso1,  C. Domínguez2 , A. Lluberas3

1Dpto. Ingeniería Geológica, E.T.S. Ingenieros de Minas. Universidad Politécnica de Madrid. C/ Ríos Rosas 21, 28003  Madrid. España

2Dpto. Matemática Aplicada. Universidad de Salamanca. Plaza de los Caídos,     37008   Salamanca. España. E-mail: karmenka@usal.es 

3Instituto Antártico Uruguayo. Uruguay

Determination of glacier velocities on King George Island (Antarctica) by DInSAR

Albert Moll(1), Matthias Braun(1), and Albert Lluberas(2)

(1) Center for Remote Sensing of Land Surfaces (ZFL), University of Bonn, Walter-Flex-Str.3, 53113 Bonn, Germany, Phone: +49-228-734925, Fax: +49-228-736857, albert.moll@uni-bonn.de    (2) Instituto Antártico Uruguayo (IAU), Av. 8 de Octubre 2958, Montevideo, Uruguay

Glaciology of the South Shetlands Programme (GLASS) -

Newsletter 2002

compiled by Jefferson Cardia Simões

A clean protocol for determining ultralow heavy metal concentrations: its application to the analysis of Pb, Cd, Cu, Zn and Mn in Antarctic snow

Sungmin Hong1*, Albert Lluberas2, Fernando Rodriguez2

1 Polar Research Center, Korea Ocean Research and Development Institute, Ansan, P.O. Box 29, Seoul 425-600, Korea

2 Instituto Antartico Uruguayo, Avenida 8 de Octubre 2958, PO Box 6051, Montevideo CP 11600, Uruguay

Corresponding author. Tel.: + 82 345 4006432; fax: + 82 345 4085825; e-mail: smhong@sari.kordi.re.kr

Corresponding coauthor   Tel: + 598 2  4878341; fax:  + 598 2 4876004; e-mail: alexllub@adinet.com.uy 

Submitted to “Korean Journal of Polar Research”, June 14, 2000

Natural and anthropogenic heavy metal deposition to the snow in King George Island, Antarctic Peninsula

Sungmin Hong¹*, Albert Lluberas², Gangwoong Lee³, Jun Kun Park¹

1Polar Sciences Laboratory, Korea Ocean Research and Development Institute, Ansan P.O. Box 29, 425-600 Seoul, Korea; 2Instituto Antartico Uruguayo, Avenida 8 de Octubre 2958, P.O. Box 6051, Montevideo CP 11600, Uruguay; 3Department of Environmental Sciences, Hankook University of Foreign Studies, 89, Wangsan-ri Mohyeon-myon, Yongin-shi, Kyongki-do, Korea;

 * Corresponding author; Tel.: + 82 31 4006432; fax: + 82 31 4085825;

e-mail: smhong@kordi.re.kr

Para contactar a la Dirección de Coordinación Científica: cientifica@iau.gub.uy

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