Biogeographic characterisation of the Austral High Andean district, Patagonian province, based on vascular plant taxa
Alfredo Padró A , Viviana Hechem A and Juan J. Morrone
B C
A Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco, Ruta 259 kilómetro 16.41, 9200 Esquel, Chubut, Argentina. Email: padroalfredo@outlook.com; vivianahf03@yahoo.com.ar.
B Museo de Zoología ‘Alfonso L. Herrera’, Departamento de Biología Evolutiva, Facultad de Ciencias, Universidad Nacional Autónoma de México, 04510 Mexico City, Mexico.
C Corresponding author. Email: juanmorrone2001@yahoo.com.mx
Australian Systematic Botany 33(2) 174-190 https://doi.org/10.1071/SB19005
Submitted: 24 January 2019 Accepted: 5 August 2019 Published: 5 February 2020
Abstract
The Austral High Andean area extends from south-eastern Mendoza, Argentina, to the southernmost tip of South America in the form of isles on the peaks of the Andes range. The objective of this biogeographic regionalisation study was to characterise this area. Individual tracks were made on the basis of the distribution maps of 232 species of vascular plants present in the area, from which localities were identified and georeferenced. A parsimony analysis of endemicity (PAE) was used to obtain a generalised track. The results support an area of endemism located mainly in the Neuquén province, which is treated as a district of the Patagonian province that belongs to the Patagonian subregion of the Andean region. This track analysis is a preliminary contribution for understanding the distributional patterns of the High Andean biota within an evolutionary biogeographic framework.
Additional keywords: biogeography, distributional patterns; High Andean area, parsimony analysis of endemicity, track analysis.
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