Elevated levels of dimethylated-sulfur compounds in Lake Bonney, a poorly ventilated Antarctic lake
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چکیده
منابع مشابه
Sub-ice Exploration of West Lake Bonney: Endurance 2008 Mission
ENDURANCE (Environmentally Non-Disturbing Under-ice Robotic Antarctic Explorer) is a highly maneuverable, hovering autonomous underwater science platform descended from the DEPTHX vehicle, both of which were developed under NASA ASTEP funding. ENDURANCE had the specifi c mission of descending through a 5 meter deep melt hole in the ice cap of West Lake Bonney, Taylor Valley, Antarctica and cond...
متن کاملMicroplankton dynamics in a perennially ice-covered Antarctic lake – Lake Hoare
1. Temporal and spatial variation in planktonic abundance, biomass and composition were determined in Lake Hoare (McMurdo Dry Valleys, Antarctica) over two summer seasons (1996–97 and 1997–98). 2. Phototrophic nanoflagellates (PNAN) dominated planktonic biomass, with a mean monthly biomass ranging between 27.3 and 40.4 lg C L. The deep chlorophyll maximum was mainly composed of cryptophytes (>8...
متن کاملOxygen budget of a perennially ice-covered Antarctic lake.
A bulk O2 budget for Lake Hoare, Antarctica, is presented. Five years of seasonal data show the lake to be persistently supersaturated with O2. Oxygen is carried into the lake in glacial meltstreams and is left behind when this water is removed as ice by ablation and sublimation. A diffusive loss of O2 from the lake through the summer moat is suggested. Measured values of the total O2 in the...
متن کاملA 60-year international history of Antarctic subglacial lake exploration
In January 2013, the USWISSARD programmemeasured and sampled LakeWhillans, a subglacial water body at the edge of West Antarctica, in a clean and environmentally sensitive manner, proving the existence of microbial life beneath this part of the ice sheet. The success of WISSARD represented a benchmark in the exploration of Antarctica, made possible by a rich and diverse history of events, disco...
متن کاملIdentification of a Psychrophilic Green Alga from Lake Bonney Antarctica: Chlamydomonas Raudensis Ettl. (uwo 241) Chlorophyceae
An unusual psychrophilic green alga was isolated from the deepest portion of the photic zone (o0.1% of incident PAR) at a depth of 17m in the permanently ice-covered lake, Lake Bonney, Antarctica. Here we identify and report the first detailed morphological and molecular examination of this Antarctic green alga, which we refer to as strain UWO 241. To determine the taxonomic identity, UWO 241 w...
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ژورنال
عنوان ژورنال: Limnology and Oceanography
سال: 2004
ISSN: 0024-3590
DOI: 10.4319/lo.2004.49.4.1044