An insight into the most threatened flora of China
An insight into the most threatened flora of China
[ES] China posee una gran diversidad de especies vegetales, tanto en lo que se refiere al número total de taxones como a la cantidad de endemismos. Sin embargo, una parte significativa de esta diversidad (hasta un 20% de la flora autóctona) está amenazada en algún grado. Una cantidad apreciable aunque todavía indeterminada de taxones se encuentra en una situación de extremo riesgo debido a su escaso número de efectivos, a menudo inferior al centenar. Se han seleccionado 20 taxones como muestra representativa de esta flora en situación muy crítica, de los que se proporciona información sobre su área de distribución, tamaño poblacional, amenazas, medidas de conservación adoptadas, estatus legal y categoría de amenaza (de acuerdo con los criterios de la UICN). La rareza extrema de estos taxones puede relacionarse con su historia evolutiva (por su condición de paleo- o neoendemismos) y/o con la actuación humana (principalmente destrucción de hábitats y sobreexplotación).
[EN] China harbors a very rich plant biodiversity both in total number of taxa and in endemism. Nevertheless, a signifi cant fraction of this diversity (up to 20% of the native plants to China) is currently threatened. Among this endangered fl ora, an appreciable but still unquantifi ed number of taxa are in an extreme situation of risk because of their low population sizes, often consisting of fewer than 100 individuals. We have selected 20 plant taxa as a sample of this extremely threatened fl ora, and, from these, information about their geographic range, population size, threats, existing conservation measures, legal status and threat degree (according to the IUCN criteria) is provided. The extreme rarity of these taxa can be linked to their evolutionary history (they are palaeo- or neoendemics) and/or to severe human disturbance (mostly habitat destruction and overexploitation) affecting them.
This study has been partially subsidized by a post-doctoral grant (EX2005-0922) from the Spanish Ministry of Education and Science (MEC) for the period 02/2006-01/2008, and by a “JAE-Doc” contract within the CSIC program “Junta para la Ampliación de Estudios”.
16 pages, 1 figure, 3 appendix.
Peer reviewed
rara, Endangered, Endemismo, conservation, endemismo, Amenazada, conservación, especies vegetales, Conservation, endangered, rare, Especies vegetales, Endemic, Rare, plant species, Conservación, Plant species, endemic, amenazada, Rara
rara, Endangered, Endemismo, conservation, endemismo, Amenazada, conservación, especies vegetales, Conservation, endangered, rare, Especies vegetales, Endemic, Rare, plant species, Conservación, Plant species, endemic, amenazada, Rara
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