Observations on a fragilarioid diatom found in inter-dune lakes of the Badain Jaran Desert (Inner Mongolia, China), with a discussion on the newly erected genus Williamsella Graeff, Kociolek & Rushforth

doi:10.11646/phytotaxa.329.1.2

	Observations on a fragilarioid diatom found in inter-dune lakes of the Badain Jaran Desert (Inner Mongolia, China), with a discussion on the newly erected genus Williamsella Graeff, Kociolek & Rushforth
	Rioual, Patrick 1; Flower, Roger J.2; Chu, Guoqiang 1; Lu, Yanbin 3; Zhang, Zhongyan 1,4; Zhu, Bingqi 5; Yang, Xiaoping 6
刊名	PHYTOTAXA
	2017-11-24
卷号	329 期号:1 页码:28-50
关键词	Williamsella Ulnaria Fragilaria Hustedt taxonomy Badain Jaran Desert Tibet China
ISSN号	1179-3155
DOI	10.11646/phytotaxa.329.1.2
通讯作者	Rioual, Patrick(prioual@mail.iggcas.ac.cn)
英文摘要	Populations of a fragilarioid diatom from inter-dune lakes of the Badain Jaran Desert (northern China), originally identified and reported under the name Fragilaria sp. cf. famelica, were investigated in detail using light and scanning electron microscopy. The analyses indicate that most of the morphological features of this taxon are identical to Williamsella angusta Graeff, Kociolek & S.R. Rushforth, the type species of the genus Williamsella recently described from Blue Lake warm spring (Utah, USA). The criteria used to separate Williamsella from Fragilaria (i.e. the presence/absence of spines, the colonial formation, the preference for saline vs freshwater habitat, and the coverings of the areolae) are not supported and the genus is refuted. Instead the new combination Fragilaria crenophila comb. nov. is proposed for the Blue Lake species. The taxon from the Badain Jaran desert lakes represents a varietal population that is characterized by shorter valve length and lower stria density than the nominal variety, and is given the name Fragilaria crenophila var. sinensis. A discussion of the taxonomy, ecology and geographical distribution of this taxon is presented and a detailed comparison with Fragilaria asiatica Hustedt, a very similar species described from northern Tibet (China) is made.
资助项目	National Natural Science Foundation of China[41430532] ; Chinese Academy of Sciences[kzcx2-yw-119]
WOS关键词	ULNARIA BACILLARIOPHYTA ; NORTH-AMERICA ; SP. NOV. ; TAXONOMY ; ULTRASTRUCTURE ; RESERVOIRS ; EVOLUTION ; CAPUCINA ; BAIKAL ; RUSSIA
WOS研究方向	Plant Sciences
语种	英语
出版者	MAGNOLIA PRESS
WOS记录号	WOS:000415991600002
资助机构	National Natural Science Foundation of China ; Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/61006]
专题	中国科学院地理科学与资源研究所
通讯作者	Rioual, Patrick
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, 19 Beitucheng Xilu, Beijing 100029, Peoples R China 2.UCL, Dept Geog, Environm Change Res Ctr, London WC1E 6BT, England 3.Paleo Data Inc, 6619 Fleur De Lis Dr, New Orleans, LA 70124 USA 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 6.Zhejiang Univ, Sch Earth Sci, Zheda Rd 38, Hangzhou 310027, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Rioual, Patrick,Flower, Roger J.,Chu, Guoqiang,et al. Observations on a fragilarioid diatom found in inter-dune lakes of the Badain Jaran Desert (Inner Mongolia, China), with a discussion on the newly erected genus Williamsella Graeff, Kociolek & Rushforth[J]. PHYTOTAXA,2017,329(1):28-50.
APA	Rioual, Patrick.,Flower, Roger J..,Chu, Guoqiang.,Lu, Yanbin.,Zhang, Zhongyan.,...&Yang, Xiaoping.(2017).Observations on a fragilarioid diatom found in inter-dune lakes of the Badain Jaran Desert (Inner Mongolia, China), with a discussion on the newly erected genus Williamsella Graeff, Kociolek & Rushforth.PHYTOTAXA,329(1),28-50.
MLA	Rioual, Patrick,et al."Observations on a fragilarioid diatom found in inter-dune lakes of the Badain Jaran Desert (Inner Mongolia, China), with a discussion on the newly erected genus Williamsella Graeff, Kociolek & Rushforth".PHYTOTAXA 329.1(2017):28-50.