Distribution of psychrophilic microorganisms in soils of Terra Nova Bay and Edmonson Point, Victoria Land and their biosynthetic capabilities

Polar Biology ◽  
2009 ◽  
Vol 32 (9) ◽  
pp. 1287-1291 ◽  
Author(s):  
Victoria Gesheva
Keyword(s):  
Terra Nova Bay ◽  
Victoria Land ◽  
Terra Nova ◽  
Edmonson Point

Significance of selected halocarbons monitoring in air samples collected in the Terra Nova Bay region (northern Victoria Land, Antarctica)

1999 ◽  
Vol 11 (2) ◽  
pp. 261-264 ◽  
Author(s):  
Filippo Mangani ◽  
Michela Maione ◽  
Luciano Lattanzi
Keyword(s):  
Ross Sea ◽  
Atmospheric Concentration ◽  
Air Samples ◽  
Terra Nova Bay ◽  
Victoria Land ◽  
Rate Of Increase ◽  
Terra Nova ◽  
Concentration Levels

CCl3F (or CFC-11) and CCl2F2 (or CFC-12) were determined in air samples collected, during subsequent summer Antarctic campaigns, in different sampling sites in the Ross Sea Region. The samples were analysed by GC-ECD after enrichment. Data obtained since 1988–89 were plotted to observe the trend of CFCs atmospheric concentration levels. A decrease in the rate of increase of CFC-12 concentration was observed, whilst the concentration of CFC-11 was actually seen to be decreasing.

Holocene raised beaches at Terra Nova Bay, Victoria Land, Antarctica

1991 ◽  
Vol 36 (2) ◽  
pp. 157-177 ◽  
Author(s):  
Carlo Baroni ◽  
Giuseppe Orombelli
Keyword(s):  
Sea Level ◽  
Level Curve ◽  
Relative Sea Level ◽  
Stratigraphic Sequence ◽  
Large Reservoir ◽  
Terra Nova Bay ◽  
Victoria Land ◽  
Nesting Sites ◽  
Terra Nova ◽  
Raised Beaches

AbstractMore than 40 14C dates for raised beaches at Terra Nova Bay ranging from the present to 7505 ± 230 yr B.P. supply minimum or maximum limiting ages that bracket a relative sea-level curve for this part of Victoria Land. Most samples consist of guano and penguin remains collected from abandoned nesting sites on beach deposits. Up to four 14C dates in stratigraphic sequence have been obtained in two soil profiles. Other samples consist of marine shells collected both within and on the surface of raised beaches. All 14C ages for organisms that lived or fed in circumantarctic waters were corrected for a large reservoir effect. The calibrated ages delimit a first relative sea-level curve for Victoria Land. Rates of uplift ranged from about 10 mm/yr following deglaciation to about 2 mm/yr in the last 3 millennia. Widespread presence of Adélie penguin nesting sites suggests that Terra Nova Bay was deglaciated before 7065 ± 250 yr B.P. (7059/6439 cal yr B.P.), when environmental conditions in the coastal area were similar to the present ones.

Water column features and their relationship with sediments and benthic communities along the Victoria Land coast, Ross Sea, summer 2004

2006 ◽  
Vol 18 (4) ◽  
pp. 603-613 ◽  
Author(s):  
Paolo Povero ◽  
Michela Castellano ◽  
Nicoletta Ruggieri ◽  
Luis S. Monticelli ◽  
Vincenzo Saggiomo ◽  
...  
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Water Column ◽  
Nutritive Value ◽  
Latitudinal Gradient ◽  
Benthic Communities ◽  
Trophic Factors ◽  
Terra Nova Bay ◽  
Victoria Land ◽  
Terra Nova

The northern Victoria Land coastal marine environment was investigated during the late summer 2004, within the framework of the Latitudinal Gradient Project (LGP), to describe the physical, chemical and biological patterns of the water column and their relationship with the pelagic and benthic compartments, and to determine to what extent they change with latitude. A latitudinal gradient from Cape Adare to the Terra Nova Bay–Cape Russell area was determined on the basis of abiotic and trophic factors. Cape Adare had lower values of organic matter (particulate organic carbon < 150 μg l−1) available for the benthic communities, but this organic matter had good trophic quality. In Terra Nova Bay the particulate organic matter was quantitatively higher (organic carbon > 400 μg l−1), presumably reaching the bottom via faecal pellets, but was more detrital, although its nutritive value was still high (carbon protein content nearly 40%), as confirmed by the great quantity of phytopigments in the sediments (> 4.0 μg g−1). The benthic communities changed with latitude as well, partially reflecting the environmental and trophic gradient, but also showing a large within-area variability (except for the Cape Adare area), due to a complex array of variables that did not change with latitude.

scholarly journals Sea-spray and marine biogenic seasonal contribution to snow composition at Terra Nova Bay, Antarctica

1999 ◽  
Vol 29 ◽  
pp. 77-83 ◽  
Author(s):  
R. Udisti ◽  
S. Becagli ◽  
E. Castellano ◽  
R. Traversi ◽  
S. Vermigli ◽  
...  
Keyword(s):  
Seasonal Pattern ◽  
Sea Spray ◽  
Common Source ◽  
Marine Aerosol ◽  
Terra Nova Bay ◽  
Source Contributions ◽  
Victoria Land ◽  
The Common ◽  
Terra Nova ◽  
Aerosol Effects

AbstractPrimary and secondary marine aerosol contributions to snow composition in Terra Nova Bay Antarctica, were evaluated by chemical analysis of surface and snow-pit samples. A seasonal pattern of marine inputs, very clear for secondary aerosol (mainly constituted by nssSO4- and methanesulphonic acid (MSA) coming from phytoplanktonic activity) and less evident for sea spray (Na+, CF, Mg2+) was shown by snow-pit samples. Altitude and distance from the coast were found to be the main parameters affecting seasonal change in the composition of snow collected within about a 200 km radius of the Terra Nova Bay Italian base. Using Na+ as a sea-spray indicator and MSA as a biogenic marker, fractionating aerosol effects (which are altitude-induced) as well as source contributions for Cl- and nssSO42- were found. A nssSO42- /MSA ratio of 2.7 (w/w), indicating their distribution from the common source dimethylsulphide, was calculated from Analysis of fresh summer snow collected in horizontal and vertical transects in northern Victoria Land.

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