Shangwua (Compositae), a new genus from the Qinghai-Tibetan Plateau and Himalayas
نویسندگان
چکیده
A new genus of Compositae, Shangwua, is described to accomodate all species formerly placed in Saussurea sect. Jacea. This genus is distinct from the other genera of tribe Cardueae in its unique combination of states of characters including involucral bracts, receptacle, paleae, anther, style, achene and pappus. Phylogenetic analyses based on molecular data suggest that this new genus belongs to the Xeranthemum group, a lineage of the Carduinae that diversified early, with only distant relationships to Saussurea and related genera. The genus Shangwua consists of three species occurring in the Qinghai-Tibetan Plateau and Himalayas.
منابع مشابه
Topographic heterogeneity and temperature amplitude explain species richness patterns of birds in the Qinghai–Tibetan Plateau
Large-scale patterns of species richness have gained much attention in recent years; however, the factors that drive high species richness are still controversial in local regions, especially in highly diversified montane regions. The Qinghai-Tibetan Plateau (QTP) and the surrounding mountains are biodiversity hot spots due to a high number of endemic montane species. Here, we explored the fact...
متن کاملThe first fossil brown lacewing from the Miocene of the Tibetan Plateau (Neuroptera, Hemerobiidae)
A new species of Hemerobiidae, Wesmaelius makarkini Yang, Pang & Ren, sp. n. is described from the Lower Miocene, Garang Formation of Zeku County, Qinghai Province (northeastern Tibetan Plateau), China. The species is assigned to the widely distributed extant genus Wesmaelius Krüger (Hemerobiinae). The species represents the first named fossil of this family from China, which sheds light on the...
متن کاملPrevalence, Associated Risk Factors, and Phylogenetic Analysis of Toxocara vitulorum Infection in Yaks on the Qinghai Tibetan Plateau, China
Toxocara vitulorum has been rarely reported in yaks at high altitudes and remote areas of Sichuan Province of Tibetan Plateau of China. The current study was designed to investigate the prevalence, associated risk factors, and phylogenetic characteristics of T. vitulorum in yak calves on the Qinghai Tibetan plateau. Fecal samples were collected from 891 yak calves and were examined for the pres...
متن کاملA less or more dusty future in the Northern Qinghai-Tibetan Plateau?
Dust plays an important role in climate changes as it can alter atmospheric circulation, and global biogeochemical and hydrologic cycling. Many studies have investigated the relationship between dust and temperature in an attempt to predict whether global warming in coming decades to centuries can result in a less or more dusty future. However, dust and temperature changes have rarely been simu...
متن کاملPerspectives on Environmental Study of Response to Climatic and Land Cover/Land Use Change over the Qinghai-Tibetan Plateau: an Introduction
Mountain areas seem to be especially susceptible to global climate change and are reported to have warmed more, and perhaps sooner, than the rest of the globe (e.g., Beniston and Rebetez, 1996). Liu and Chen (2000) have argued that the Qinghai-Tibetan Plateau is a harbinger of climate change due to its early and accelerated warming. It represents the largest high-elevation region on the globe, ...
متن کامل