Knowledge Resource Center for Ecological Environment in Arid Area
Is geographical rarity frequent among the cacti of the Chihuahuan Desert? | |
Hernandez, Hector M.; Gomez-Hinostrosa, Carlos; Hoffmann, Gibran | |
通讯作者 | Hernandez, Hector M. |
来源期刊 | REVISTA MEXICANA DE BIODIVERSIDAD
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ISSN | 1870-3453 |
出版年 | 2010 |
卷号 | 81期号:1页码:163-175 |
英文摘要 | 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 km(2). 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. |
英文关键词 | areas of occupancy cacti Chihuahuan Desert distribution size Mexico IUCN Red List |
类型 | Article |
语种 | 英语 |
国家 | Mexico |
收录类别 | SCI-E |
WOS记录号 | WOS:000276971000021 |
WOS关键词 | ENDANGERED CACTI ; DIVERSITY ; CACTACEAE ; CONSERVATION ; DISTURBANCE ; REGION ; MEXICO ; AREAS |
WOS类目 | Biodiversity Conservation |
WOS研究方向 | Biodiversity & Conservation |
来源机构 | Universidad Nacional Autónoma de México |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/166325 |
作者单位 | Univ Nacl Autonoma Mexico, Inst Biol, Dept Bot, Mexico City 04510, DF, Mexico |
推荐引用方式 GB/T 7714 | Hernandez, Hector M.,Gomez-Hinostrosa, Carlos,Hoffmann, Gibran. Is geographical rarity frequent among the cacti of the Chihuahuan Desert?[J]. Universidad Nacional Autónoma de México,2010,81(1):163-175. |
APA | Hernandez, Hector M.,Gomez-Hinostrosa, Carlos,&Hoffmann, Gibran.(2010).Is geographical rarity frequent among the cacti of the Chihuahuan Desert?.REVISTA MEXICANA DE BIODIVERSIDAD,81(1),163-175. |
MLA | Hernandez, Hector M.,et al."Is geographical rarity frequent among the cacti of the Chihuahuan Desert?".REVISTA MEXICANA DE BIODIVERSIDAD 81.1(2010):163-175. |
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