El genero Muhlenbergia Schreber (Poaceae) en Chile

Volume: 41Start Page: 53End Page: 6

Valerianella rimosa Bastard (Valerianaceae), weed from the South of Chile

Volume: 54Start Page: 89End Page: 9

[Deschampsia berteroana (Kunth) Trin., Poaceae, new record for the Argentinian flora]

Volume: 57Start Page: 185End Page: 18

The adventive flora of the archipelago of Juan Fernandez

Volume: 50Start Page: 69End Page: 10

Analysis of the contribution and efficiency of the Santuario de la Naturaleza Yerba Loca, 33° S in protecting the regional vascular plant flora (Metropolitan and Fifth regions of Chile)

Santuario de la Naturaleza Yerba Loca (SN Yerba Loca), Metropolitan Region (MR), 33° S, Chile is analyzed for its conservation value and efficiency in protecting native vascular plants in a regional context. The reserve's flora of 500 species and subtaxa was evaluated for species richness, endemism, range size and marginally distributed taxa, using species-area analysis, and tendencies in the floras of the MR (1,434 species and subtaxa) and MR-Fifth regions (1,841 species and subtaxa) to set the regional pattern. The reserve (0.7 % of MR land area and 0.3 % MR-Fifth land area) contains 34 % of the MR and 27% of the MR-Fifth floras, and around 16-17 % of the mediterranean-climate area (regions IV-VIII) flora of central Chile. Veech's Relative Richness Index (RRI) revealed that SN Yerba Loca houses exaggerated richness in relation to its land area (28 % more species than expected from the regional model). However, endemism rates (35 % Continental Chile endemics, 22 % Mediterranean endem

The vascular plant flora of the Bellotos del Melado National Reserve, VII Region, Chile: A documented checklist

Volume: 57Start Page: 117End Page: 13

Identification of priority areas for conservation in an arid zone: application of parsimony analysis of endemicity in the vascular flora of the Antofagasta region, northern Chile

Endemic taxa are those restricted to a specific area, and could be defined as the exclusive biodiversity of a region. An area of endemism contains taxa found nowhere else and could be catalogued as irreplaceable and of high priority for conservation. Kerr (1997, Conservation Biology 11: 1094-2000) proposed the parsimony analysis of endemicity (PAE) as a tool to detect areas of endemism. PAE, a method of historical biogeography, is analogous to cladistic methods used in phylogenetics analysis, and unites areas (taxa in cladistics) based on their shared species (characters in cladistics) according to the most parsimonious solution. In this paper we determined with PAE, prioritary areas for conservation on the basis of concentrations of endemic species in the arid region of Antofagasta, northern Chile, and compared the results with their representation in the current Chilean National Parks and Reserves System. We found two areas suggested as priorities, one located in the north Andean zone of the region, and another at the coast. The area with the higher biodiversity and concentration of endemics was that located at the coast. However, coastal ecosystems are currently under-represented in the Chilean National Parks and Reserves System. The establishment of a new protected area in the coastal zone of the region of Antofagasta is currently under consideration, coinciding with the area suggested with PAE as priority. This new area would not only allow conserving species with evident problems of conservation, but also preserving an area where higher levels of endemism exis