Atmospheric Impacts due to Anthropogenic Activities in Remote Areas: The Case Study of Admiralty Bay/King George Island/Antarctic Peninsula

Leal, Miguel; Joppert, M.; Licínio, Marcus Vinícius; Evangelista, Heitor; Maldonado, Juan Gabriel García; Dalia, Kely C.; Lima, C.; Leite, C. V. Barros; Corrêa, Sérgio Machado; Medeiros, G.; Cunha, K. Dias da

doi:10.1007/s11270-007-9525-7

Cited by 18 publications

(11 citation statements)

References 17 publications

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“…The changing atmospheric circulation, local and global, and human impacts have to be taken into account as well as inputs from melting glaciers (Leal et al 2008). The changing of general environmental conditions are more and more re− flected in new and stabalized habitats, which can be better related and compared to those from others regions and be categorized by ecological frames (Blume and Bölter 2004).…”

Section: Further Tasksmentioning

confidence: 99%

Soil development and soil biology on King George Island, Maritime Antarctic

Bölter¹

2011

Polish Polar Research

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Abstract:This review covers aspects of soil science and soil biology of Antarctica with special focus on King George Island, South Shetlands, the martitime Antarctic. New approaches in soil descriptions and soil taxonomy show a great variety of soil types, related to different parent material, mainly volcanic origin, as well as on influences by soil biological processes. The spread of higher rooting plants attract microorganisms, nematodes and collemboles which in turn build new organic material and change the environment for further successors. Microbial communities are drivers with respect to metabolic and physiological properties indicating a great potential in a changing environment. The literature review also shows a lack of investi− gations on processes of carbon and nitrogen turnover, despite wide knowledge on its standing stock in different environments. Further, only few reports were found on the processes of humification. Only few data are available which can be regarded as long term monitorings, hence, such projects need to be established in order to follow ecological changes.

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Section: Further Tasksmentioning

confidence: 99%

Soil development and soil biology on King George Island, Maritime Antarctic

Bölter¹

2011

Polish Polar Research

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“…The fjord morphology of areas such as the Admiralty and Maxwell bays and the Marian Cove has been developed by glaciers (Chang et al, 2003;Santos et al, 2007). The approximately 92% of KGI is covered with glaciers, which have a maximum thickness of 395 m (Leal et al, 2008). However, retreat of glacier rapidly occurs because of climate change (Park et al, 1998).…”

Section: Natural Environmentsmentioning

confidence: 99%

“…These results indicate that the contributions of the factors controlling the REE levels such as aerosol are different, and the influence of aerosol was predominant in samples at the PW of the Barton Peninsula among the sampling sites. It is known that snow, glacier and surface water at KGI were affected by aerosol from marine spray, particles by weathering and anthropogenic materials occurred around scientific stations (Santos et al, 2005;Leal et al, 2008), and aerosol such as mineral particles can be one of REEs sources in the coastal areas (Bory et al, 2010). To clearly understand the reasons for these results, additional research on the source identification of the REEs is necessary.…”

Section: Chemical Propertiesmentioning

confidence: 99%

“…The response to environmental change around KGI has been rapid because the island is located in the marginal area of West Antarctica and the access to KGI is easier than other regions. Therefore, numerous studies in various fields such as environmental change, the petrogenesis of volcanic rocks, soil formation, sedimentation in coastal environments, the isotopic compositions of seawater and dry deposition have been conducted (Khim et al, 1997;Park et al, 1998;Lee et al, 2004;Yeo et al, 2004;Santos et al, 2007;Leal et al, 2008). However, there has been little work on the geochemical properties of MW and PW at the Barton and Weaver Peninsulas.…”

Section: Introductionmentioning

confidence: 99%

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Geochemical characteristics of meltwater and pondwater on Barton and Weaver Peninsulas of King George Island, West Antarctica

et al. 2014

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In Antarctica, the geochemical properties of meltwater and pondwater are very sensitive to global warming. Therefore, understanding the geochemical properties of the meltwater and pondwater is crucial to evaluating global climate change. This study was performed to examine the chemical and isotopic compositions of the meltwater and pondwater at the Barton and Weaver Peninsulas of King George Island, Antarctica, to understand their spatial variation and to evaluate factors controlling the surface water chemistry. The meltwater, pondwater and seawater were sampled at 50 sites of the Barton and Weaver Peninsulas during the period from 23 December 2010 to 5 January 2011. The chemical compositions of the meltwater and pondwater were mainly influenced by sea salt. Additionally, the influence of water-rock interaction was observed in some meltwater and pondwater. The LREE/HREE ratios of some of the pondwater in the Barton Peninsula showed a decreasing trend by influence of water-rock interaction. The influences of sea salt and water-rock interaction were more dominant at the Barton Peninsula than the Weaver Peninsula. The δ 18 O and δD of the meltwater and pondwater showed a wide range. Little evaporation losses were observed at the Barton Peninsula but evaporation losses did not occurred at the Weaver Peninsula.

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“…Além disso, algumas espécies de animais marinhos da região estiveram próximos à extinção. 1,4 Nos últimos 50 anos a Antártica tem se tornado um espaço de estudos científicos, com a implantação de estações de pesquisa de diversas nacionalidades. Atualmente existem cerca de 79 estações científicas nas Ilhas Antárticas, sendo uma parte permanente e outra somente em funcionamento no período do verão.…”

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Avaliação dos teores de Pb, Cd, Sn, Co, Hg, Mo e As em solos da península Fildes - Antártica

et al. 2016

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EVALUATION OF Pb, Cd, Sn, Co, Hg, Mo AND As IN SOIL FROM FILDES PENINSULA -ANTARCTICA. Antarctic Continent is one of the few places that has not been explored at all, but studies show that this place is suffering interference by human activities. Therefore, monitoring of this region becomes very important. After optimization and verification of the methodology, the concentrations of Pb, Cd, Sn, Co, Hg, Mo and As in soil samples collected in the Fildes Peninsula, King George Island, Antarctica, were determined by ICP-MS. The ranges found (µg kg -1 ) were: for Pb 525.2-2314.1, for Cd 54. , for Co 2095.0-11094.1, for Hg < 2.4-54.6, for Mo 5.3-38.7 and for As 120.3-1297.1. In general, the presence of these elements can be attributed to different factors, such as natural composition of soil, melting process and transport of chemical elements caused by physical phenomena as sea and air currents, besides anthropic contamination. Using enrichment factor was possible suggest contribution by anthropic activities mainly for Co and As. Thus, it is important monitoring the elements levels constantly assisting in environmental protection.Keywords: soil; Antarctica; trace elements; ICP-MS. INTRODUÇÃOA Antártica, devido ao seu isolamento geográfico e condições climáticas extremas é um dos ambientes mais preservados do mundo e por muito tempo foi considerado um ambiente controle, porém, estudos mostram que essa região não tem escapado do impacto das atividades antrópicas. [1][2][3] Devido ao isolamento, os bens naturais desse continente demoraram um tempo para ser explorados. Foi a partir de 1900 que as Ilhas Antárticas começaram a ser exploradas principalmente para a pesca de baleias e outros animais marinhos, o que provocou o transporte e introdução de espécies animais e vegetais exóticas, acarretando um desequilíbrio ambiental. Além disso, algumas espécies de animais marinhos da região estiveram próximos à extinção. 1,4 Nos últimos 50 anos a Antártica tem se tornado um espaço de estudos científicos, com a implantação de estações de pesquisa de diversas nacionalidades. Atualmente existem cerca de 79 estações científicas nas Ilhas Antárticas, sendo uma parte permanente e outra somente em funcionamento no período do verão. 5O crescimento das atividades antrópicas nesse continente impulsionou a regulamentação de normas que visam à diminuição dos impactos causados pela ocupação humana. Com base nessas normas foi assinado em 1991 o Protocolo de Proteção Ambiental do Tratado da Antártica, principal documento internacional que regulamenta as atividades na Antártica, ficando estabelecido que este território se caracteriza como uma reserva natural destinada à paz e à ciência, excluindo todo e qualquer tipo de exploração. 6 Além da contaminação causada pelas estações científicas, pesquisadores tem se empenhado em estudar a poluição causada a partir da absorção de poluentes provenientes do transporte de partículas pelas correntes de ar e marítimas em grande escala geográfica, originados das atividades humanas desenvolvidas em outros cont...

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Atmospheric Impacts due to Anthropogenic Activities in Remote Areas: The Case Study of Admiralty Bay/King George Island/Antarctic Peninsula

Cited by 18 publications

References 17 publications

Soil development and soil biology on King George Island, Maritime Antarctic

Soil development and soil biology on King George Island, Maritime Antarctic

Geochemical characteristics of meltwater and pondwater on Barton and Weaver Peninsulas of King George Island, West Antarctica

Avaliação dos teores de Pb, Cd, Sn, Co, Hg, Mo e As em solos da península Fildes - Antártica

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