干旱区生态环境知识资源中心(Arid): Lacustrine systems of Clearwater Mesa (James Ross Island, north-eastern Antarctic Peninsula): geomorphological setting and limnological characterization

Arid

DOI	10.1017/S0954102019000178
	Lacustrine systems of Clearwater Mesa (James Ross Island, north-eastern Antarctic Peninsula): geomorphological setting and limnological characterization
	Roman, Matej 1,2; Nedbalova, Linda 3; Kohler, Tyler J.3; Lirio, Juan M.4; Coria, Silvia H.4; Kopacek, Jiri 5; Vignoni, Paula A.6; Kopalova, Katerina 3; Lecomte, Karina L.6,7; Elster, Josef 8; Nyvlt, Daniel 1
通讯作者	Roman, Matej
来源期刊	ANTARCTIC SCIENCE
ISSN	0954-1020
EISSN	1365-2079
出版年	2019
卷号	31 期号:4 页码:169-188
英文摘要	Lentic freshwater habitats are important centres of biodiversity within the infrequent ice-free oases across Antarctica. Given imminent climate changes, it is crucial to catalogue these habitats in order to provide baseline data for future monitoring and biological surveys. The lacustrine systems of Clearwater Mesa, a previously unexplored part of James Ross Island, north-eastern Antarctic Peninsula, are described here. We conducted basic geomorphological and limnological surveys over three Antarctic summers (2009-16) to characterize landscape evolution, infer the origin of lake basins and assess the variability in their water chemistry. Stable shallow lakes, formed in depressions between lava tumuli following the last deglaciation, were found to dominate the volcanic mesa, although several peripheral lakes in ice-proximal settings appear to have formed recently as a result of post-Neoglacial ice recession. We found large heterogeneity in conductivity (similar to 10-7000 mu S cm(-1)), despite the lithologically uniform substrate. This variability was shown to be related to lake type, basin type (open vs closed), meltwater source and proximity to the coast. Inter-annual differences were attributed to changes in sea spray influx and snow accumulation driven by variable weather conditions. Overall, the ion composition of lakes suggested that sea spray was the dominant source of ions, followed by the weathering of bedrock.
英文关键词	deglaciation hydrology lake origin lake typology landscape evolution water chemistry
类型	Article
语种	英语
国家	Czech Republic ; Argentina
收录类别	SCI-E
WOS记录号	WOS:000478614300001
WOS关键词	PRINCE GUSTAV CHANNEL ; CLIMATE-CHANGE ; ICE-FREE ; HISTORY ; LAKES ; DEGLACIATION ; EVOLUTION ; RESPONSES ; BEHAVIOR ; RECORDS
WOS类目	Environmental Sciences ; Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214200
作者单位	1.Masaryk Univ, Fac Sci, Dept Geog, Kotlarska 2, Brno 61137, Czech Republic; 2.Charles Univ Prague, Fac Sci, Dept Phys Geog & Geoecol, Albertov 6, Prague 12843 2, Czech Republic; 3.Charles Univ Prague, Fac Sci, Dept Ecol, Vinicna 7, Prague 12844 2, Czech Republic; 4.Ist Antartico Argentino, 25 Mayo, RA-1143 San Martin, Buenos Aires, Argentina; 5.Czech Acad Sci Vvi, Biol Ctr, Inst Hydrobiol, Na Sadkach 7, Ceske Budejovice 37005, Czech Republic; 6.Univ Nacl Cordoba, CONICET, Ctr Invest Ciencias Tierra CICTERRA, Av Velez Sarsfield 1611,X5016CGA, Cordoba, Argentina; 7.Univ Nacl Cordoba, Fac Ciencias Exactas Fis & Nat, Av Velez Sarsfield 1611,X5016CGA, Cordoba, Argentina; 8.Univ South Bohemia, Fac Sci, Ctr Polar Ecol, Na Zlate Stoce 3, Ceske Budejovice 37005, Czech Republic
推荐引用方式 GB/T 7714	Roman, Matej,Nedbalova, Linda,Kohler, Tyler J.,et al. Lacustrine systems of Clearwater Mesa (James Ross Island, north-eastern Antarctic Peninsula): geomorphological setting and limnological characterization[J],2019,31(4):169-188.
APA	Roman, Matej.,Nedbalova, Linda.,Kohler, Tyler J..,Lirio, Juan M..,Coria, Silvia H..,...&Nyvlt, Daniel.(2019).Lacustrine systems of Clearwater Mesa (James Ross Island, north-eastern Antarctic Peninsula): geomorphological setting and limnological characterization.ANTARCTIC SCIENCE,31(4),169-188.
MLA	Roman, Matej,et al."Lacustrine systems of Clearwater Mesa (James Ross Island, north-eastern Antarctic Peninsula): geomorphological setting and limnological characterization".ANTARCTIC SCIENCE 31.4(2019):169-188.