Lacustrine systems of Clearwater Mesa (James Ross Island, north-eastern Antarctic Peninsula): geomorphological setting and limnological characterization

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F19%3A00509968" target="_blank" >RIV/60077344:_____/19:00509968 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/19:10394644 RIV/60076658:12310/19:43899509 RIV/00216224:14310/19:00110339

Result on the web

<a href="https://www.cambridge.org/core/journals/antarctic-science/article/lacustrine-systems-of-clearwater-mesa-james-ross-island-northeastern-antarctic-peninsula-geomorphological-setting-and-limnological-characterization/91EEB3EBD354FD8F7D1B2AA3C0B89A84" target="_blank" >https://www.cambridge.org/core/journals/antarctic-science/article/lacustrine-systems-of-clearwater-mesa-james-ross-island-northeastern-antarctic-peninsula-geomorphological-setting-and-limnological-characterization/91EEB3EBD354FD8F7D1B2AA3C0B89A84</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/S0954102019000178" target="_blank" >10.1017/S0954102019000178</a>

Result language

angličtina

Original language name

Lacustrine systems of Clearwater Mesa (James Ross Island, north-eastern Antarctic Peninsula): geomorphological setting and limnological characterization

Original language description

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.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10503 - Water resources

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Antarctic Science

ISSN

0954-1020

e-ISSN

—

Volume of the periodical

31

Issue of the periodical within the volume

4

Country of publishing house

GB - UNITED KINGDOM

Number of pages

20

Pages from-to

169-188

UT code for WoS article

000478614300001

EID of the result in the Scopus database

2-s2.0-85065594637