• Ocean and Polar Research
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• 제23권4호
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• pp.347-360
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• 2001

This study examined the taxonomic composition of marine benthic algal flora from Maxwell Bay, King George Island, Antarctica, collected between January 1988 and January 1995. The rhodophyte specimens collected and examined included a total of 20 genera and 20 species of red algae. Of these, 2 species, Kallymenia antarctica Hariot and Pantoneura plocamioides Kylin, were recorded in Maxwell Bay for the first time. Taxonomic keys for the rhodophytes are also provided.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제2권1호
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• pp.15-20
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• 2021

This study was carried out to investigate the moss flora of Barton Peninsula on King George Island of Antarctica. The study presented here was based on field surveys of Barton Peninsula conducted by the author during the austral summer season in 2012/2013, 2013/2014, 2014/2015 and herbarium specimens from Hiroshima University. The result of the study showed that the moss flora Barton Peninsula consisted of a total of 35 species, with 11 families and 21 genera.

• Ocean and Polar Research
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• 제25권4호
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• pp.645-652
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• 2003

The coastal environment of King George Island is potentially subject to contamination by pollutants arising from station operations, such as emissions from fossil fuel burning, oil spills, waste disposal, etc. As a preparatory step to assess such impacts on the marine environment and living organisms of this island, two molluscan species (the bivalve Laternula elliptica and the gastropod Nacella concinna) were selected as biomonitors for metal pollution monitoring, and their baseline levels have been investigated for the past several years at King Sejong Station. In this review, variability of the baseline levels is discussed in relation to body size, tissue type, and sex. Natural elevations of some metals are also discussed with respect to the environmental characteristics of this region.

• 미생물학회지
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• 제28권3호
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• pp.199-203
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• 1990

남극 토양생태계 세균의 분포와 세균의 생화학적 특성을 알아보기 위해 King George섬의 세종기지(한국)와 Te-niente Jubany기지(아르헨티나) 주변의 토양 17점을 남극 하계 기간(1989년 2월) 동안 채취하여 종속영양 세균의 수오 채외 효소활성도를 측정하였다. 종속영양 세균수는 시료채취지역과 배양온도가 다른 조건에서 자란 세균의 경우에도 그 평균값이 비숫한 경향을 보이고 있으나 protease는 $4^{\circ}C$에서 자란 세균의 경우 92%로서 특히 높게 나타났다. 배양온도에 따라 매우 변화가 켰으며 산술평균값은 배양온도 $37^{\circ}C$, $25^{\circ}C$, $4^{\circ}C$에서 각각 $2.5\times 10^{4}$, $2.7\times 10^{7}$, $6.9\times 10^{5}$ CFU/$cm^{3}$soil로 나타났다

• Ocean and Polar Research
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• 제24권3호
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• pp.279-287
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• 2002

Successive 24 snow samples, collected from a 1.2m snow pit at a site on the summit of Main Dome in King George Island, Antarctic Peninsula, were measured for heavy metals such as Pb, Cd, Cu, and Zn and other chemical species. The mean concentrations of heavy metals are 3.48pg/g for Pb, 0.10pg/g for Cd, 16.6 pg/g for Cu and 15.8 pg/g for Zn, respectively. Pb and Cd concentrations observed in our samples are very comparable to those reported for recent snow at other Antarctic sites, while Zn and Cu levels are much higher than those at other sites. The annual fallout fluxes of all heavy metals approximately calculated are, however, much greater in King George Island than at other sites. With respect to the estimates of natural contributions, sea salt spray is found to be a major contributor to Cd and Zn inputs to the snow and minor to Cu inputs. On the other hand, the anthropogenic input can account for a large part of Pb concentrations. A tentative estimate represents that local emissions could be responsible for more than half of the excess Pb flux to the snow in King George Island.

• Journal of Microbiology
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• 제44권5호
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• pp.480-491
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• 2006

As part of the long-term monitoring projects on Antarctic terrestrial vegetation in relation to global climate change, a lichen floristical survey was conducted around the Korean Antarctic Station (King Sejong Station), which is located on Barton Peninsula, King George Island, in January and February of 2006. Two hundred and twenty-five lichen specimens were collected and sixty-two lichen species in 38 genera were identified by morphological characteristics, chemical constituents, TLC analysis and ITS nucleotide sequence analysis.

• Ocean and Polar Research
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• 제24권3호
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• pp.313-318
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• 2002

The basic magnetic properties are reported for Eocene andesite and granitic andesite collected from the King Sejong Station and Marsh Runway at King George Island, South Shetland Islands Antarctic Peninsula. Samples A (andesite), B (granitic andesite) and D (granitic andesite) carry stable component of natural remanent magnetization (NRM), but sample C (andesite) unstable URM. These NRM stabilities are consistent with the domain structures estimated by the ratios of $J_R/J_s\;and\;H_{RC}/H_C$ values. On the basis of their Curie temperature, we infer magnetite as the main magnetic carrier for samples A B and C and titanomagnetite for sample D. Our study reveals that samples A and B are suitable for paleomagnetic investigations, whereas sample D is not.

• 한국토양비료학회지
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• 제45권1호
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• pp.103-106
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• 2012

To investigate distribution characteristics of heavy metals in soils in the vicinity of King Sejong Station of King George Island, Antarctica, Fe, Mn, Cu, Zn, Pb, Co, Cd, Cr, Ni and Mo contents were investigated under different distances and directions from King Sejong Station. 13 sample sites were distributed from King Sejong Station. In site 4, the Cd content was higher than that in other sites. The Cr content was the highest in site 9, and the Ni and Mn contents were high in site 12. Cu, Co and Zn were highly contained in distance 1~2 km from King Sejong Station. Cd, Cr, Ni and Mo contents were lower, whereas Fe, Mn, Cu, Zn, Pb and Co contents were higher than other heavy metal contents at all sites.

• Ocean and Polar Research
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• 제23권3호
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• pp.209-221
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• 2001

Taxonomic composition of marine benthic algal flora was investigated in an Antarctic bay. Specimens of chlorophyte, chrysophyte and phaeophyte were collected and examined over the period from January 1988 to January 1995 from Maxwell Bay, King George Island. A total of 19 genera and 23 species (7 chlorophytes, 1 chrysophyte and 15 phaeophytes) were identified and described. A chlorophyte Lambia antarctica (Skottsberg) Delepine and a phaeophyte Alethocladus corymbosus (Dickie) Sauvageau were recorded in Maxwell Bay for the first time. Taxonomic keys for the chlorophytes and the phaeophytes were also provided.

• Ocean and Polar Research
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• 제26권1호
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• pp.1-10
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• 2004

Ice cliff retreat and sea-ice formation around King Sejong Station in King George Island were analysed and compared with air temperature change. Analysis of 33-year (1969-2001) air temperature records at Bellingshausen Station has revealed regional atmospheric warming, and the increasing rate of air temperature Is equivalent to a warming of $1^{\circ}C$ for 27-year period. Here we present time-series of observations for the areal extent of the ice cliff and ice sheet, showing that they have retreated dramatically in the past 45 years (1956-2001). Retreat of 1,050 m in length of the ice clifr has changed the Marian Cove into a low rectangular form of 4 km in length and 1 to 1.3km in width. The retreat rates have since increased from 6 m/yr of the Primary investigated Period to 54 and 81m/yr in the recent years. Exceptionally, the ice cliff had been advanced of 21m in length for a year between 1987 and 1988 of cold winters. Ice sheet in King George Island also shows a similar decrease, and the decreasing extent is much larger at the southern part of the Main Cove, relatively more exposed to the sun, than at the northern part. Comparing sea-ice formation in winter with air temperature data shows a pattern starting to freeze below $-5^{\circ}C$ and to thaw over $-3^{\circ}C$. It is conclusively estimated that the patterns and magnitudes of ice cliff retreat and sea-ice formation are consistent with fluctuations of the air temperature, and that the recent rapid retreat of ice cliff and less formation of sea-ice are caused especially by the warming trends in autumn accompanied with expansion of summer thawing period.