Is geographical rarity frequent among the cacti of the Chihuahuan Desert?
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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2010
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| author | Héctor M. Hernández |
| author_facet | Héctor M. Hernández |
| contents | Is geographical rarity frequent among the cacti of the Chihuahuan Desert? Héctor M. Hernández Carlos Gómez-Hinostrosa Gibrán Hoffmann Biología cacti Mexico IUCN Red List Chihuahuan Desert distribution size With the aim of assessing the extent of geographical rarity of Mexican Cactaceae, we calculated the distribution size (area of occupancy) of 142 species from the Chihuahuan Desert. In addition, using 2 variables (number of localities and range size), we preliminarily assessed their conservation status using the current IUCN Red List criteria. The results showed enormous variation in the areas of occupancy, although from the biogeographic and conservation perspective the most exceptional group comprises the extremely narrow endemics (42 species), whose range is restricted to areas smaller than 10 km2. Our results reinforce the reputation of this plant family as exceptionally rare geographically. We suggest that geographical rarity of Cactaceae in the Chihuahuan Desert is a natural phenomenon; however, we propose that the range of several species has been influenced by human activities. Regarding the conservation status of the species, 75 of them are categorized as Least concern. The remaining 67 species (47.2%) fall in 1 of the 3 categories of threat (27 Vulnerable, 11 Endangered, and 29 Critically endangered). These figures confirm the critical conservation status of Mexican Cactaceae. 2010 artículo científico 1870-3453 https://www.redalyc.org/articulo.oa?id=42515998021 en http://www.redalyc.org/revista.oa?id=425 Revista Mexicana de Biodiversidad application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Biodiversidad (México) Num.1 Vol.81 |
| format | Artículo científico |
| id | redalyc_42515998021 |
| institution | Redalyc |
| language | en |
| publishDate | 2010 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Is geographical rarity frequent among the cacti of the Chihuahuan Desert? Héctor M. Hernández Biología cacti Mexico IUCN Red List Chihuahuan Desert distribution size Is geographical rarity frequent among the cacti of the Chihuahuan Desert? Héctor M. Hernández Carlos Gómez-Hinostrosa Gibrán Hoffmann Biología cacti Mexico IUCN Red List Chihuahuan Desert distribution size With the aim of assessing the extent of geographical rarity of Mexican Cactaceae, we calculated the distribution size (area of occupancy) of 142 species from the Chihuahuan Desert. In addition, using 2 variables (number of localities and range size), we preliminarily assessed their conservation status using the current IUCN Red List criteria. The results showed enormous variation in the areas of occupancy, although from the biogeographic and conservation perspective the most exceptional group comprises the extremely narrow endemics (42 species), whose range is restricted to areas smaller than 10 km2. Our results reinforce the reputation of this plant family as exceptionally rare geographically. We suggest that geographical rarity of Cactaceae in the Chihuahuan Desert is a natural phenomenon; however, we propose that the range of several species has been influenced by human activities. Regarding the conservation status of the species, 75 of them are categorized as Least concern. The remaining 67 species (47.2%) fall in 1 of the 3 categories of threat (27 Vulnerable, 11 Endangered, and 29 Critically endangered). These figures confirm the critical conservation status of Mexican Cactaceae. 2010 artículo científico 1870-3453 https://www.redalyc.org/articulo.oa?id=42515998021 en http://www.redalyc.org/revista.oa?id=425 Revista Mexicana de Biodiversidad application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Biodiversidad (México) Num.1 Vol.81 |
| title | Is geographical rarity frequent among the cacti of the Chihuahuan Desert? |
| topic | Biología cacti Mexico IUCN Red List Chihuahuan Desert distribution size |
| url | https://www.redalyc.org/articulo.oa?id=42515998021 |