Podrobnosti záznamu

Název
    Freshwater lakes of Ulu Peninsula, James Ross Island, north-east Antarctic Peninsula: origin, geomorphology and physical and chemical limnology
Autor
    Elster, Josef
    Kopáček, Jiří
    Nedbalová, Linda
    Nývlt, Daniel
    Šobr, Miroslav
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Antarctic Science
Svazek/č.
    Roč. 25, č. 3
Strany
    15
Rok
    2013
Výraz tezauru
    conductivity, deglaciation, lake origin, lake types, morphometry, nutrients, James Ross Island, ANtarctic Peninsula
Klíčové slovo
    Antarctic
    Chemical
    Freshwater
    Geomorphology
    Island
    James
    Lakes
    Limnology
    North-east
    Origin
    Peninsula
    Physical
    Ross
    Ulu
Abstrakt (anglicky)
   This study describes the origin, bedrock geology, geomorphology, hydrological stability and physical and chemical characteristics of a representative set of 29 lakes in the ice-free parts of the Ulu Peninsula, James Ross Island, located close to the northern tip of the Antarctic Peninsula. Based on these features, six different types of lakes were defined: stable shallow lakes on higher-altitude levelled surfaces, shallow coastal lakes, stable lakes in old moraines, small unstable lakes in young moraines, deep cirque lakes and kettle lakes. We observed a significant relationship between lake type and water chemistry. Bedrock, lake age and morphometry together with altitude were the most important factors underlying the observed limnological variability. Our results further suggested possible nitrogen limitation in the lake ecosystems. However, physical factors such as low temperature and light were also likely to be limiting.
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (RIV)
Zdrojový formát
    R
Datum importu
    15. 10. 2014