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Rarity patterns and conservation priorities in Cactaceae species from the Southern Central Andes: a case study from the Calchaquíes Valleys, Salta, Argentina Ecología austral
Godoy-Bürki,Ana C.; Aagesen,Lone; Sajama,Jesús M.; Bravo,Silvia; Alonso-Pedano,Mariana; Ortega-Baes,Pablo.
In this study, 34 Cactaceae species from the Calchaquíes Valleys, Argentina, were studied to determine 1) species rarity level, 2) proportion of rare species among taxonomic and ecological groups and, 3) whether rareness is consistently distributed throughout the species geographical ranges. We used a model where rarity is defined by the geographic range and the local population size to define species rarity. Rareness was not concentrated in any particular taxonomic or ecological group of Cactaceae; however 28 species were rare at some level. In most species, rarity varied across the geographical range, only five species remained consistently rare in all the surveyed populations. Six species qualified as extremely rare, all from the Cactoideae subfamily,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Geographic range; Local abundance; Extinction risk; Endemism.
Ano: 2016 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2016000100007
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