INVESTIGADORES
LADIO Ana Haydee
artículos
Título:
Plantas utilizadas en cercos vivos de ciudades patagónicas: aportes de la etnobotánica para la conservación.
Autor/es:
ROVERE, ADRIANA; MOLARES, SOLEDAD; LADIO A H
Revista:
ECOLOGÍA AUSTRAL
Editorial:
ASOCIACIÓN ARGENTINA DE ECOLOGÍA
Referencias:
Lugar: Buenos Aires; Año: 2013 vol. 23 p. 165 - 173
ISSN:
0327-5477
Resumen:
Hedges constitute a significant part of Patagonian city landscapes, and can be very important not only as
reservoirs of biodiversity, but also as possible sources of invasion. In this work, carried out in eight Patagonian
tourist cities, species richness was estimated and the botanical families and biogeographical origin of the plants
chosen for hedges were recorded. Considering the influence of European colonists on cultural and landscaping
development in the region, one would expect a high proportion of resources to be of Holarctic origin. Species
were identified in 100 homes chosen at random in each locality (San Martín de los Andes, Villa la Angostura,
Dina Huapi, El Bolsón, Lago Puelo, Esquel and Trevelin) and in 300 homes in Bariloche, due to its greater size.
Total plant richness was 137 species, the most common being Cytisus scoparius (L.) Link (9%), Rosa sp. (8%),
Pseudotsuga menziesii (Mirb.) Franco (7%), Cupressus macrocarpa Hartw. ex Gordon (5%) and Ligustrum sinense
Lour. (3%). Of the 48 botanical families represented, the most frequent were Rosaceae, Fabaceae, Cupressaceae
and Pinaceae (67% of the total registered). Species come from the following regions: Holarctic (72%), Antarctic
(23%), Paleotropical (19%), Neotropical (5%) and Australian (2%). We conclude that the hedges studied, in
terms of species richness, display similarities with the main ornamental species at a global level. However, the
presence of Antarctic elements (32 species) indicates the incorporation of species native to Andean-Patagonian
forests, and therefore an important role is being played here in terms of conservation. In addition, our survey
shows that certain species may present a risk of biological invasion (e.g., Sorbus aucuparia L., Crataegus monogyna
Jacq., Ulex europaeus L.) and we therefore propose that the population should be warned about the negative
effects of these species.