A new species of Genkalia (Bacillariophyta) from mountain lakes within the Sichuan Province of China

Phytotaxa ◽  
2018 ◽  
Vol 372 (3) ◽  
pp. 236 ◽  
Author(s):  
F. LUO ◽  
Q-M. YOU ◽  
Q-X. WANG
Keyword(s):  
Central Area ◽  
High Elevation ◽  
Sichuan Province ◽  
Tibet Plateau ◽  
Diatom Species ◽  
Monsoon Climate ◽  
The Sichuan Basin ◽  
Qinghai Tibet Plateau ◽  
Secondary Side ◽  
A New Species

A new diatom species, Genkalia alpina sp. nov., was identified in high elevation lakes in the Mugecuo Scenic Area within the Sichuan Province of China. The area is located in the northern foot of the Hengduan Mountains between the western edge of the Sichuan Basin and the Qinghai-Tibet Plateau, belongs to the subtropical humid monsoon climate, at an altitude of 2600–3800m, with lake water originating mostly from the melting mountain snow. Light and scanning electron microscopy revealed that G. alpina valves are linear with two undulated margins and apices that are subcapitate in larger specimens, but slightly shorter in smaller specimens. The central area is elliptical, and the external proximal raphe ends are straight, or slightly deflected towards the primary valve side. Terminal raphe fissures are strongly bent towards the secondary side and they extend to mantle. Uniseriate striae continue uninterrupted from the valve face to the mantle. The present study is the first report of Genkalia species in China, and expands the geographical distribution of the genus, as well as the known diatom diversity of China.

Eunotia (Bacillariophyta) biodiversity from high altitude, freshwater habitats in the Mugecuo Scenic Area, Sichuan Province, China

Phytotaxa ◽  
2019 ◽  
Vol 394 (2) ◽  
pp. 133 ◽  
Author(s):  
FEN LUO ◽  
QINGMIN YOU ◽  
PAN YU ◽  
WANTING PANG ◽  
QUANXI WANG
Keyword(s):  
New Species ◽  
Sichuan Basin ◽  
Tibet Plateau ◽  
Hengduan Mountains ◽  
New Taxon ◽  
Monsoon Climate ◽  
Two New Species ◽  
Freshwater Habitats ◽  
The Sichuan Basin ◽  
Qinghai Tibet Plateau

Mugecuo Scenic Area is located in the northern Hengduan Mountains between the Sichuan Basin and the Qinghai-Tibet Plateau and has a subtropical humid monsoon climate. The area is at an altitude of 2600–3800 m above sea level (asl), with water originating mostly from melting mountain snow. In the region, a total of 20 Eunotia species have been identified, including two new species: E. mugecuo sp. nov., consisting of valves arched, clavate, ends broadly rounded, and terminal raphe fissures at the junction between valve face and mantle. The other newly-identified species is classified named as E. filiformis sp. nov., consisting of valves gently bent, ends not noticeably or only slightly inflated, broadly rounded, with external terminal raphe fissures curving in an angle of 180° back from apical nodules. Five newly recorded species have been identified in China, including E. odebrechtiana, E. michaelis, E. pomeranica, E. pseudogroenlandica and E. superpaludosa. Here, we discuss the new species and new taxon records through light and scanning microscopic documentation of valve morphology, along with key internal and external valve characteristics, and analyze the distribution of Eunotia in the Mugecuo Scenic Area.

A new species of Neidiomorpha (Bacillariophyceae) from Dianshan Lake in Shanghai, China

Phytotaxa ◽  
2019 ◽  
Vol 423 (2) ◽  
pp. 99-104
Author(s):  
FEN LUO ◽  
QI YANG ◽  
KAIJUAN GUO ◽  
TENGTENG LIU ◽  
QUANXI WANG ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Central Area ◽  
Diatom Species ◽  
Dianshan Lake ◽  
A New Species ◽  
Scanning Electron

A new diatom species, Neidiomorpha dianshaniana sp. nov., found in Dianshan Lake in Shanghai, China, is described herein. The morphology of N. dianshaniana has been documented by light and scanning electron microscopy. Neidiomorpha dianshaniana valves are elliptical in outline with rostrate apices. Raphe is almost straight and filiform. The axial area is narrow and linear. The central area is small, round to transversely elliptical or irregular. Striae are slightly radiate and almost parallel near the apices. Puncta are arranged in undulating longitudinal rows. Neidiomorpha dianshaniana’s most visible feature is its lack of central constriction, in which respect it differs from the three other species in the genus Neidiomorpha.

Achnatherum pilosum (Stipeae, Poaceae), a new species from Qinghai-Tibet Plateau

Phytotaxa ◽  
2018 ◽  
Vol 350 (1) ◽  
pp. 86 ◽  
Author(s):  
ZHONG-SHUAI ZHANG ◽  
SHAN-WEN JIANG ◽  
WEN-LI CHEN
Keyword(s):  
New Species ◽  
Systematic Position ◽  
Tibet Plateau ◽  
Qinghai Tibet Plateau ◽  
A New Species

A new species of Achnatherum from Qinghai-Tibet Plateau is described and illustrated. It is distinguished from other species of the genus by attributes of ligules, panicles, glumes, lemmas, awns and anthers. Evidence from lemma epidermal pattern, cytology and morphology confirm its systematic position in Achnatherum s.s.

scholarly journals Ptilagrostis contracta (Stipeae, Poaceae), a New Species Endemic to Qinghai-Tibet Plateau

PLoS ONE ◽  
2017 ◽  
Vol 12 (1) ◽  
pp. e0166603 ◽  
Author(s):  
Zhong-Shuai Zhang ◽  
Ling-Lu Li ◽  
Wen-Li Chen
Keyword(s):  
New Species ◽  
Tibet Plateau ◽  
Qinghai Tibet Plateau ◽  
A New Species

scholarly journals Hessebius luculentus, a new species of the genus Hessebius Verhoeff, 1941 from China (Lithobiomorpha, Lithobiidae)

ZooKeys ◽  
2018 ◽  
Vol 741 ◽  
pp. 193-202 ◽  
Author(s):  
Huiqin Ma ◽  
Yanmin Lu ◽  
Haipeng Liu ◽  
Xiaojie Hou ◽  
Sujian Pei
Keyword(s):  
New Species ◽  
Morphological Characters ◽  
Tibet Plateau ◽  
Qinghai Tibet Plateau ◽  
A New Species

Hessebius luculentussp. n.(Lithobiomorpha: Lithobiidae), recently discovered from Shandan County, Zhangye City, Province Gansu, Qinghai-Tibet Plateau, China, is described. Morphologically it resemblesH. jangtseanus(Verhoeff, 1942), but can be easily distinguished from the latter by size of Tömösváry’s organ’s, the morphological characters of a protuberance on the dorsal end of the second article of the female gonopods; and obvious differences in the dorsal plectrotaxy of both the 14thand 15thlegs. The main morphological characters and a key to the known Chinese species of genusHessebiusbased on adult specimens are presented.

scholarly journals Plagiochila xerophila (Plagiochilaceae, Marchantiophyta) – a highly xerophilous new species from the Tibetan Spur (China)

2020 ◽  
Vol 153 (1) ◽  
pp. 120-131
Author(s):  
Vadim Bakalin ◽  
Anna Vilnet
Keyword(s):  
New Species ◽  
Morphological Traits ◽  
High Elevation ◽  
Sichuan Province ◽  
Integrative Analyses ◽  
Exposed Habitat ◽  
A New Species

Background and aims – The xeric landscapes of the Tibetan floristic province are adverse habitats for leafy liverworts. Here we report on the occurrence of a population of a species of the genus Plagiochila from exposed high-elevation cliffs in the Sichuan Province, China. We assessed its taxonomic distinctiveness and affinities within a morphological and phylogenetic framework.Results and discussion – The population is accommodated in a new species, Plagiochila xerophila Bakalin & Vilnet – probably the most xerophilous taxon within the genus in Asia – and a new section (sect. Xerophilae Bakalin & Vilnet) based on integrative analyses of molecular and morphological traits. The species is characterized by a greenish colour, unexpected given the highly exposed habitat, rigid texture and stem paraphyllia. The closest morphological relatives from sect. Poeltiae are phylogenetically only distantly related, whereas members of its sister groups, namely of sect. Trabeculatae and sect. Fruticosae are morphologically conspicuously different.

scholarly journals Hydrometeorological Triggering of Periglacial Debris Flows Using a Bayesian Approach: A Case Study of the Hailuogou Gully Region, China

2021 ◽  
Author(s):  
Zheng Wang ◽  
Ningsheng Chen ◽  
Guisheng Hu ◽  
Yong Zhang ◽  
Genxu Wang ◽  
...  
Keyword(s):  
Debris Flow ◽  
Debris Flows ◽  
High Elevation ◽  
Tibet Plateau ◽  
Hydrological Characteristics ◽  
Effects Of Temperature ◽  
Qinghai Tibet Plateau ◽  
Hydrometeorological Conditions ◽  
Debris Flow Initiation

Abstract Mount Gonggais located in the east of the Qinghai–Tibet Plateau; many debris flows have occurred in small basins with a small glacier cover or snow cover in this area. The hydrometeorological conditions that caused debris flows in this region are complex, making forecasting and early warning difficult. Previous studies for these small-glacial-covered basins have primarily considered rainfall as the only inducing factor of debris flows, and often the effects of temperature are neglected. Thus, we carried out a probabilistic analysis of variables derived from hydrometeorological factors for the Mount Gongga region, Sichuan, China, where debris flows were recorded on 14 days between 1988 and 2019. By analyzing hydrological characteristics when debris flows occurred, three distinct dominant trigger types could be identified. The results show that 7 (50%) of the observed debris flow events during the study period, high-intensity rainfall was the dominant trigger, snowmelt by high temperature was identified as the dominant trigger for 2 (14%). Furthermore, 5 (36%) debris flow events could be attributed to the combined effects of long-lasting (or short-medium) rainfall and sustained higher temperatures. We find that the differences between the trigger types are statistically significant, and a susceptibility prediction differentiating between trigger types can outperform simple rainfall-only situations. This study contributes to an improved understanding of the hydrometeorological impact on debris flow initiation in high elevation watersheds.

A new species of Pertusaria (Pertusariaceae, Ascomycota) from Qinghai-Tibet Plateau of China

Phytotaxa ◽  
2018 ◽  
Vol 333 (1) ◽  
pp. 143
Author(s):  
ZHONG-SHUAI SUN ◽  
ZUN-TIAN ZHAO
Keyword(s):  
New Species ◽  
Tibetan Plateau ◽  
Western China ◽  
Tibet Plateau ◽  
Qinghai Tibet Plateau ◽  
A New Species

Two species of Pertusariaceae are here described as new to science, based on material collected from Qinghai-Tibetan Plateau, western China. Pertusaria tibetensis Z.S. Sun has broad lecanorate verrucae, pinkish pruinose discs, 1-spored asci and the presence of norstictic acid. Pertusaria beishanensis Z.S. Sun has broad lecanorate verrucae, black pruinose discs, 2-spored asci and the presence of planaic acid.

scholarly journals Spatio-temporal Clusters of Health Workforce Distribution in Sichuan Province, China: a county-level analysis

2020 ◽  
Author(s):  
Ning Zhang ◽  
Wei Ning ◽  
Tao Xie ◽  
Jinlin Liu ◽  
Bin Zhu ◽  
...  
Keyword(s):  
Registered Nurses ◽  
Health Workforce ◽  
Population Distribution ◽  
Space Time ◽  
Sichuan Province ◽  
Tibet Plateau ◽  
County Level ◽  
Mountain Areas ◽  
Eastern Sichuan ◽  
Qinghai Tibet Plateau

Abstract Background The health workforce is a key determinant in achieving health equity. As a southwestern province of China, Sichuan confronted with the geographical variation of health workforce in recent years. The misdistribution of health workforce in Sichuan is severe for its complex terrain, uneven population distribution and huge economic differences. The study of Sichuan province is of great significance to other regions of China. Methods This study applied time-series analysis, spatial autocorrelation and space-time scan analysis to explore and visualize the spatial changing patterns of different types of health workforce (health technicians, licensed doctors, registered nurses, pharmacists, technologists, and intern) at the municipal and county level in Sichuan. Results The box plots displayed the temporal trend of health workforce from 2009 to 2018 via the county-level data. All types of health workforce were in rising generally especially the registered nurses. The space-time analysis and Global Moran' I revealed the distinctive geographical clusters among all the counties. The local Moran' I detected that HH clusters mainly in the capital and some rich places of Sichuan, while some mountain areas in eastern Sichuan displayed LL clusters. Four main findings should be paid attention to the whole health workforce of Sichuan province had an upward trend. Comparing with other provinces, the growth rate also was in a high rank; the areas with the scarcest resources were eastern place, including areas of Tsinling Mountains, Yunnan-Guizhou Plateau, Hengduan Mountains and the transition zone of mountains and basins; misdistribution of health workforce had two levels, among the province and cities; the Qinghai Tibet Plateau has enough intern while being short of other health technicians. Conclusions The policies makers should pay more attention to the eastern Sichuan. As to the intern-related policies, the primary health tasks did not achieve, Qinghai Tibet Plateau areas needed to find practical ways to attract the interns

Eutrema tianshanense (Brassicaceae), a new species from Tian Shan Mountains of central Asia

Phytotaxa ◽  
2016 ◽  
Vol 286 (1) ◽  
pp. 23 ◽  
Author(s):  
GUOQIAN HAO ◽  
IHSAN A. AL-SHEHBAZ ◽  
QIANLONG LIANG ◽  
QIAN WANG ◽  
JIANQUAN LIU
Keyword(s):  
New Species ◽  
Central Asia ◽  
Phylogenetic Analyses ◽  
Tibet Plateau ◽  
Long Distance ◽  
North Asia ◽  
Tian Shan Mountains ◽  
Qinghai Tibet Plateau ◽  
A New Species ◽  
Tian Shan

Eutrema tianshanense, a new species of Brassicaceae growing near to the permanent glaciation area in the Tian Shan Mountains of central Asia, is described. It is quite similar morphologically to E. heterophyllum, and E. racemosum from the Qinghai-Tibet Plateau and adjacent regions, and to E. edwardsii of Qinghai-Tibet Plateau, Central and North Asia, and northern North America, but with rounder and smaller leaves. In addition to its long-distance disjunction from the ranges of the above three species, phylogenetic analyses based on sequence variations of multiple chloroplast DNA markers and nuclear ITS suggested that E. tianshanense and these species represent two independently evolved lineages in Tian Shan Mountains and the Qinghai-Tibet Plateau. Their morphological similarities may have resulted from the same selection pressures in the alpine habitats where they grow.

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