Arid
DOI10.1007/s00300-017-2090-7
Freshwater diatom biogeography and the genus Luticola: an extreme case of endemism in Antarctica
Kociolek, J. P.1,2; Kopalova, K.3; Hamsher, S. E.1; Kohler, T. J.3,4; Van de Vijver, B.5,6; Convey, P.7; McKnight, D. M.4
通讯作者Kociolek, J. P.
来源期刊POLAR BIOLOGY
ISSN0722-4060
EISSN1432-2056
出版年2017
卷号40期号:6页码:1185-1196
英文摘要

Historical views have characterized Antarctica as a frozen desert with low diversity, although recent studies suggest that this may not be true for microscopic organisms. For microbes, assessing endemism in the Antarctic region has been particularly important, especially against a backdrop of debate regarding their presumed cosmopolitan nature. To contribute to this conversation, we highlight the observed endemism of the freshwater diatom genus Luticola in Antarctica by synthesizing the results of a modern high-resolution taxonomy from the Continental, Maritime, and sub-Antarctic regions. We report that Luticola has one of the highest endemic rates of any diatom genus in Antarctica, in terms of total number of species (taxon endemism) and percentage of the entire genus (phylogenetic endemism). Of the over 200 species of Luticola globally, nearly 20% (43) occur in the Antarctic, with 42 of these being endemic. Within regions, Maritime Antarctica has the largest number of Luticola species and endemics (28 and 23, respectively), followed by Continental Antarctica (14, 9) and sub-Antarctic islands (8, 6). Thus, 38 of the 42 endemics are found in a single region only. While the timing of Luticola diversification has not been established, fossil evidence suggests recent invasions and/or diversification over a relatively short geologic timescale. Understanding the origin and evolution of endemic diatom species in Antarctica will help us better understand microbial biogeography, as well as assess and interpret impacts of large-scale environmental change taking place at southern latitudes.


英文关键词Dry Valleys Bacillariophyta Sub-Antarctic islands Cryosphere Ubiquity hypothesis James Ross Island
类型Review
语种英语
国家USA ; Czech Republic ; Belgium ; England
收录类别SCI-E
WOS记录号WOS:000403470300002
WOS关键词SOUTH SHETLAND ISLANDS ; JAMES-ROSS-ISLAND ; LIVINGSTON ISLAND ; MUELLERIA BACILLARIOPHYTA ; TAXA BACILLARIOPHYTA ; SP NOV. ; DIVERSITY ; DISPERSAL ; ECOLOGY ; ECOSYSTEMS
WOS类目Biodiversity Conservation ; Ecology
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/201698
作者单位1.Univ Colorado, Museum Nat Hist, UCB 218, Boulder, CO 80309 USA;
2.Univ Colorado, Dept Ecol & Evolutionary Biol, Boulder, CO 80309 USA;
3.Charles Univ Prague, Fac Sci, Dept Ecol, Vinicna 7, CR-12844 Prague 2, Czech Republic;
4.Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA;
5.Bot Garden Meise, Dept Bryophyta & Thallophyta, Nieuwelaan 38, B-1860 Meise, Belgium;
6.Univ Antwerp, ECOBE, Dept Biol, Univ Pl 1, B-2610 Antwerp, Belgium;
7.British Antarctic Survey, Madingley Rd, Cambridge CB3 0ET, England
推荐引用方式
GB/T 7714
Kociolek, J. P.,Kopalova, K.,Hamsher, S. E.,et al. Freshwater diatom biogeography and the genus Luticola: an extreme case of endemism in Antarctica[J],2017,40(6):1185-1196.
APA Kociolek, J. P..,Kopalova, K..,Hamsher, S. E..,Kohler, T. J..,Van de Vijver, B..,...&McKnight, D. M..(2017).Freshwater diatom biogeography and the genus Luticola: an extreme case of endemism in Antarctica.POLAR BIOLOGY,40(6),1185-1196.
MLA Kociolek, J. P.,et al."Freshwater diatom biogeography and the genus Luticola: an extreme case of endemism in Antarctica".POLAR BIOLOGY 40.6(2017):1185-1196.
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