Distribution of sewage pollution around a maritime Antarctic research station indicated by faecal coliforms, Clostridium perfringens and faecal sterol markers

2004 ◽  
Vol 127 (3) ◽  
pp. 315-321 ◽  
Author(s):  
Kevin A. Hughes ◽  
Anu Thompson
Keyword(s):  
Clostridium Perfringens ◽  
Research Station ◽  
Faecal Coliforms ◽  
Maritime Antarctic ◽  
Sewage Pollution ◽  
Antarctic Research

Distribution of sewage input in marine sediments around a maritime Antarctic research station indicated by molecular geochemical indicators

2010 ◽  
Vol 408 (20) ◽  
pp. 4665-4671 ◽  
Author(s):  
Rosalinda C. Montone ◽  
César C. Martins ◽  
Márcia C. Bícego ◽  
Satie Taniguchi ◽  
Denis Albuquerque Moreira da Silva ◽  
...  
Keyword(s):  
Marine Sediments ◽  
Research Station ◽  
Maritime Antarctic ◽  
Geochemical Indicators ◽  
Antarctic Research

Rotavirus removal in experimental waste stabilization pond systems with different geometries and configurations

1995 ◽  
Vol 31 (12) ◽  
pp. 285-290 ◽  
Author(s):  
J. I. Oragui ◽  
H. Arridge ◽  
D. D. Mara ◽  
H. W. Pearson ◽  
S. A. Silva
Keyword(s):  
Clostridium Perfringens ◽  
Slow Process ◽  
Faecal Coliforms ◽  
Waste Stabilization Ponds ◽  
Stabilization Pond ◽  
Waste Stabilization Pond ◽  
Stabilization Ponds ◽  
Waste Stabilization

Rotavirus removal in waste stabilization ponds is a relatively slow process: in a series of ten ponds (a 1-d anaerobic pond followed by nine 2-d ponds) its numbers were reduced from 1.4 × 105 per litre to zero, and in an “innovative” series (a 1-day anaerobic pond, 3-d facultative pond, 3.8-d, 3-d and 5-d maturation ponds) from 5.1 × 104 per litre to <5 per litre. Faecal coliforms were better indicators of rotaviruses than was Clostridium perfringens .

Detection of human commensals in the area around an Antarctic research station

1997 ◽  
Vol 9 (2) ◽  
pp. 156-161 ◽  
Author(s):  
M. Upton ◽  
T.H. Pennington ◽  
W. Haston ◽  
K.J. Forbes
Keyword(s):  
Research Articles ◽  
Waste Materials ◽  
Research Station ◽  
Human Origin ◽  
Culture Methods ◽  
The Past ◽  
Sensitive Issue ◽  
Human Contamination ◽  
Antarctic Research ◽  
Microbial Contaminants

Human contamination of Antarctic environments is a sensitive issue and has been the focus of many research articles over the past 35 years. The majority of these studies have targeted waste materials and various hydrocarbons, with assessment of microbial contaminants being largely restricted to sewage outfalls. The present study aimed to detect bacteria of human origin in the area surrounding Halley research station. It was apparent from both molecular and culture methods that bacteria of human origin are extremely difficult to detect outside the immediate surrounding of the buildings, though recommendations are made for increasing the probability of determining the presence of organisms in the environment. The results also indicate that molecular methods are more sensitive than cultural techniques, in that the only evidence for organisms in the environment surrounding the buildings came from positive PCR reactions. PCR would appear to be a useful method for studying the microbial ecology of Antarctic environments.

The Removal of Excreted Bacteria and Viruses in Deep Waste Stabilization Ponds in Northeast Brazil

1986 ◽  
Vol 18 (10) ◽  
pp. 31-35 ◽  
Author(s):  
J. I. Oragui ◽  
T. P. Curtis ◽  
S. A. Silva ◽  
D. D. Mara
Keyword(s):  
Clostridium Perfringens ◽  
Retention Time ◽  
Northeast Brazil ◽  
Depth Range ◽  
Faecal Coliforms ◽  
Pathogen Removal ◽  
Waste Stabilization Ponds ◽  
Stabilization Ponds ◽  
Waste Stabilization ◽  
Faecal Streptococci

The removal of excreted bacteria (faecal coliforms, faecal streptococci, Clostridium perfringens, total and sorbitol-fermenting bifidobacteria, salmonellae and thermophilic campylobacters) and viruses (enterovirus and rotavirus) in a series of deep anaerobic, facultative and maturation ponds (depth range: 2.8 - 3.4 m), with an overall retention time of 21 days and a mean mid-depth temperature of 27°C, was studied. Thermophilic campylobacters, bifidobacteria and salmonellae were not detected after 11, 16 and 21 days' retention respectively. Faecal coliforms, faecal streptcocci and Cl. perfringens were reduced by 4, 4 and 2 orders of magnitude respectively, and enteroviruses and rotaviruses both by 3 orders. The results indicate that pathogen removal in deep ponds is similar to that in ponds of normal depth.

Antarctic rock weathering simulations: simulator design, application and use

1989 ◽  
Vol 1 (1) ◽  
pp. 45-50 ◽  
Author(s):  
Kevin Hall ◽  
Alan Cullis ◽  
Chris Morewood
Keyword(s):  
Field Measurements ◽  
Laboratory Simulation ◽  
Simulation Studies ◽  
Maritime Antarctic ◽  
Simulation Based ◽  
Simulator Design ◽  
Antarctic Research ◽  
Computer Controlled ◽  
Mechanical Weathering ◽  
The Antarctic

The design of a computer-controlled climatic simulation cabinet used for mechanical weathering studies on Antarctic rocks is described. It is argued that if the results of simulations are to be applicable to field situations they should be firmly based on field environmental conditions. Some weathering results from a laboratory simulation based upon microclimatic data collected from the maritime Antarctic are presented and it is shown that they could not have been obtained from field measurements alone. Further simulation studies are required for the Antarctic and it is argued that the nature of Antarctic research is such that it is particularly conducive to this type of approach.

scholarly journals Daily to intraseasonal oscillations at Antarctic research station Neumayer

2013 ◽  
Vol 26 (2) ◽  
pp. 193-204 ◽  
Author(s):  
N. Rimbu ◽  
G. Lohmann ◽  
G. König-Langlo ◽  
C. Necula ◽  
M. Ionita
Keyword(s):  
Time Series ◽  
Wind Speed ◽  
Sea Level ◽  
Intraseasonal Variability ◽  
Research Station ◽  
Sea Level Pressure ◽  
Level Pressure ◽  
Intraseasonal Oscillations ◽  
Antarctic Research ◽  
And Sea Level

AbstractHigh temporal resolution (three hours) records of temperature, wind speed and sea level pressure recorded at Antarctic research station Neumayer (70°S, 8°W) during 1982–2011 are analysed to identify oscillations from daily to intraseasonal timescales. The diurnal cycle dominates the three-hourly time series of temperature during the Antarctic summer and is almost absent during winter. In contrast, the three-hourly time series of wind speed and sea level pressure show a weak diurnal cycle. The dominant pattern of the intraseasonal variability of these quantities, which captures the out-of-phase variation of temperature and wind speed with sea level pressure, shows enhanced variability at timescales of ∼ 40 days and ∼ 80 days, respectively. Correlation and composite analysis reveal that these oscillations may be related to tropical intraseasonal oscillations via large-scale eastward propagating atmospheric circulation wave-trains. The second pattern of intraseasonal variability, which captures in-phase variations of temperature, wind and sea level pressure, shows enhanced variability at timescales of ∼ 35, ∼ 60 and ∼ 120 days. These oscillations are attributed to the Southern Annular Mode/Antarctic Oscillation (SAM/AAO) which shows enhanced variability at these timescales. We argue that intraseasonal oscillations of tropical climate and SAM/AAO are related to distinct patterns of climate variables measured at Neumayer.

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