NAME Los Glaciares National Park

IUCN MANAGEMENT CATEGORY

II (National Park)

Natural World Heritage Site - Criteria ii, iii

BIOGEOGRAPHICAL PROVINCE 8.11.2/8.37.12 (Chilean Nothofagus/Southern Andean)

GEOGRAPHICAL LOCATION Southern Argentine Andes, south west Santa Cruz Province along the border with Chile. El Calafate is the main urban centre and is located 40km from the park boundaries. El Chalten is a small town established in 1986 at the foot of Mt. Fitz Roy. 49°12'-50°52'S, 72°40'-73°37'W

DATE AND HISTORY OF ESTABLISHMENT The area was first protected by the provision of Decree No. 105.433 in 1937. The national park was established on 28 April 1945 by Decree-Law 9.504. Actual boundaries and zonation of the park were defined on 11 October 1971 by Law 19.292. Inscribed on the World Heritage List in 1981. In 1986, more than 100ha were released to the small town El Chalten, in Lake Viedma sector.

AREA 445,900ha

LAND TENURE State

ALTITUDE 200m to 3,375m

PHYSICAL FEATURES Comprises a mountainous lacustrine area which includes a snow-capped sector of the southern Andean Cordillera with many glaciers derived from the Patagonian Ice Field, and a pre-Andean sector to the east that is generally free of ice. The Patagonain Ice Field extends over 14,000 sq. km and is the largest ice mantle outside Antarctica. It occupies about half of the park and has a total of 47 glaciers, 13 of which feed into the Atlantic basin, the two largest of which are Upsala (595 sq. km) and Viedma (575 sq. km). In addition, there are approximately 200 glaciers each of which are less than 3 sq. km and are independent of the main ice field. Glacial activity is concentrated around two main lakes, namely Argentino and Viedma, which are themselves the product of ancient glacial activity, and drain into the Atlantic Ocean via the Santa Cruz River. Evidence suggests that all glaciers except Moreno Glacier are currently retreating. Descriptions of glaciers and glacial activity are given in Mermoz et al. (1993). The highest peaks in the park are Mts. Fitz Roy or Chalten (3,375m) and Torre (3,128m). Soils above 1,100m are nutrient-poor, overlying a base rock of granite and schist. In less inclined terrain, soils types typical of humid prairies can be found. In forested sectors, the soils are characteristically brown and acidic. The pre-Andean zone which extends eastward to the middle of the Lake Argentino basin consists mainly of nutrient poor clay soils (Mermoz et al., 1993).

CLIMATE Classified as temperate, with an annual mean temperature of 7.5°C. Average minimum and maximum temperatures are 3.3°C and 12.0°C, respectively. The park lies in the rain shadow of the Andes, creating a precipitation gradient from 900mm in the Cordillera to 500mm in the eastern sectors of the park. Mean precipitation is 809mm and mostly falls from April to May. Snowfall during winter is common, and westerly windstorms usually occur during late spring and summer.

VEGETATION The park contains two well delimited major phytogeographical formations: subantarctic Patagonian forest and Patagonian steppe. The principal species in the forests include southern beech Nothofagus antarctica, N. pumilio (the most abundant), N. betuloides (at its southernmost limit), and N. dombeyi (which replaces N. betuloides from 48°S); other typical species are Fuchsia magellanica, Winter's bark Drimys winteri, Ribes magellanicus, Berberis buxifolia, Pernettya mucronata, Philesia buxifolia, and Guaytecas Islands cypress Pilgerodendron uviferum (R). Patagonian steppe occurs to the east, with extensive tussock grasslands of Stipa spp., Festuca argentina, and Poa spp., interspersed with bushes of Mulinum spinosum and Berberis buxifolia. Semidesert comprising xerophytic cushion grasses occur above 1,000m. Higher areas to the west consist of bare snow-covered mountains and glaciers.

FAUNA Little information exist about vertebrates inhabiting the park, apart from birds. Among mammals, there is an isolated population of southern Andean huemul Hippocamelus bisulcus (E). Mountain viscacha Lagidium wolffsohni probably lives in some sectors of the park, but its presence remains to be confirmed. Other species of interest are the guanaco Lama guanicoe, Argentine grey fox Duscicyon griseus and Austral hog-nosed skunk Conepatus humboldti. A total of 100 birds species have been recorded in the park. Noteworthy species include lesser rhea Pterocnemia pennata, Andean condor Vultur gryphus, which form nesting and roosting colonies called condoreras, torrent duck Merganetta armata, black-throated finch Melanodera melanodera, and others (Mermoz et al., 1993). Two species of salmonids Onchorhynchus mikiss and Christivomer namaycush were introduced in lakes Argentino and Viedma.

CULTURAL HERITAGE Prehistoric inhabitants of the area were hunters-gatherers who relied upon guanaco for their subsistence. These were followed by the Tehuelchian culture. The park includes at least 14 sites of archaeological interest which are related to these cultures. Tehuelches Indians were almost exterminated during the proccess of European colonisation.

LOCAL HUMAN POPULATION There are no inhabitants within the park.

VISITORS AND VISITOR FACILITIES Tourist activities are concentrated in the summer months (November through to March). The average annual number of visitors during the period 1990-1995 was 78,000, the majority coming from Europe and Japan. Facilities for visitors include hotels, camping and picnic areas. Organised tours are available to the main sites such as Lake Argentino, and Upsala Glacier (Administración de Parques Nacionales, pers. comm., 1995).

SCIENTIFIC RESEARCH AND FACILITIES Partial inventories of flora and fauna (mainly birds) exist. Archaeological sites have been surveyed. In addition, glacier dynamics (Naruse et al., 1991) and meteorological and atmospheric pollution surveys have beenconducted (Tafuri, 1983). There are no research facilities within the park.

CONSERVATION VALUE The area includes a reservoir of fresh water which plays a key role in the hydrology of a vast region. In spite of not having a high biological diversity, it contains a well represented sample of Patagonian cold forests and small populations of mammals and birds that are of particular conservation concern, such as the southern Chilean huemul and torrent duck.

CONSERVATION MANAGEMENT A preliminary management plan of the park is available (Mermoz et al., 1993). Livestock have been removed from the Lake Rico area and Guaytecas Island cypress had slightly recovered there. Access routes are controlled by park wardens. Sport fishing of salmonids occurs and is regulated.

MANAGEMENT CONSTRAINTS Poaching of guanaco had previously been a problem but has almost been curbed. Although some areas have remained untouched by man, they have been grazed by feral cattle. Others areas, including Mt. Fitz Roy, have been heavily overgrazed, especially by sheep (J. Bertolotti, pers. comm., 1995). Pressures from tourism can be quite high. Large areas have been burnt by uncontrolled forest fires and uneven regeneration of the forest renders the park particularly susceptible to any disturbance. Notofagus forest in the south has been completely destroyed by fire (Erize et al., 1993).

STAFF A total of 28 staff in 1994, including one director, one Head of Department of Protection, one ranger in charge of fire control, one in charge of environmental education, 10 field workers, and 13 in charge of administrative and maintenance tasks. Seasonal workers are temporarily contracted in the summer (Administración de Parques Nacionales, pers. comm., 1995).

BUDGET US$1,090,000 in 1994 (Administración de Parques Nacionales, pers. comm., 1995).

LOCAL ADDRESSES

Intendencia, Parque Nacional Los Glaciares, Avda. del Libertador 1302, El Calafate (9405) Provincia de Santa Cruz) (Tel: 54 902 91005).

Administracion de Parques Nacionales, Santa Fe 690 (1059), Capital Federal (Tel: 54 1 31201257; Fax: 54 1 3158452).

REFERENCES

Erize, F., Canevari, M., Canevari, P., Costa, G. y Rumboll, M. (1993). Los Parques Nacionales de la Argentina y otras de sus Areas Protegidas. INCAFO, Madrid, Spain. 238 pp.

Mermoz, M., Ramilo, E., Chehebar, C. y Martin, C. (1993). Plan General de Manejo Parque Nacional Los Glaciares. Administracion de Parques Nacionales. Mimeogr.

Naruse, R. et al. (1991). Preliminary report of Glacier Research Project in Patagonia 1990. Informe inédito.

Tafuri, V. (1983). Estación básica de medida de la contaminación de la atmósfera en la República Argentina. Informe inédito.

Date June 1981, updated May 1990, and July 1995