The influence of brown and south polar skua on the content of plant nutrient in the soils from the Fildes Peninsula (King George Island, West Antarctica)

Abakumov, Evgeny; Лупачев, А. В.; Andreev, Mikhail; Wang, Wen‐Juan; Ji, Xiaowen

doi:10.1080/02757540.2020.1839435

Cited by 11 publications

(2 citation statements)

References 20 publications

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“…The soils are represented by underdeveloped varieties (mostly Leptosols, without visible morphological signs of pollution). The data on the soils were published in earlier studies [25][26][27].…”

Section: Methodsmentioning

confidence: 99%

The Content of Polyarenes in Soils of Antarctica: Variability across Landscapes

Лодыгин

Abakumov

Nizamutdinov

2021

Land

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Soil cover of the Earth is faced with intensive polychemical contamination. The pathways of the key pollutants are not investigated enough. Thus, the occasional transportation of soils to remote regions could serve as an informative tool for the elaboration of threshold levels of hazardous materials concentration. One of the most striking examples of such transboundary impact was the transfer of soils and grounds to the Antarctic stations Russkaya and Leningradskaya (before the implementation of the Madrid Protocol in 1991). Thus, the complex investigation of qualitative and quantitative composition of polycyclic aromatic hydrocarbons (PAHs) in soils of various genesis (transported from Eurasia and pristine) of Antarctic have been conducted by the method of high-performance liquid chromatography (HPLC) in a gradient elution mode. The variability of PAHs content was evaluated across landscapes: pristine (the Hudson Mountains and the Haswell Archipelago), contaminated soils (stations Myrniy, Druzhnaya 4 and Bellinshausen) and unique samples of former agrosoils transported by fly in-fly of polar staff from St. Petersburg to Antarctic for local polar greenhouses in the Soviet times, when it was not strictly prohibited. The selected objects of study allow us to not only estimate the degree of contamination of Antarctic soils and grounds, but to also make it possible to assess the rate of PAH degradation in Antarctic conditions. Both high molecular and low molecular PAHs are accumulated following intense anthropogenic activity (fossil organic fuel combustion). The PAHs pool is dominated by low molecular weight representatives (naphthalene, phenanthrene, fluoranthene, pyrene). In most cases, the highest concentrations of benz(a)pyrene does not exceed the Russian Threshold Standard rate, which is the strictest one in the world. The statistical analysis of raw data allowed us to conclude that the contamination of pristine soils of Antarctica across variable landscapes is at the very initial stage. However, we recorded extremely high levels of PAHs in the transported former agrosoils. We can assume that our data could be used as background levels for the elaboration of threshold concentrations of the PAHs for such an internationally managed region as Antarctica.

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Section: Methodsmentioning

confidence: 99%

The Content of Polyarenes in Soils of Antarctica: Variability across Landscapes

Лодыгин

Abakumov

Nizamutdinov

2021

Land

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“…In Antarctica, the fauna influence is of great importance as an organism soil forming factor and happens mainly through the pedogenic process known as ornithogenesis Tatur and Myrcha, 1984). The ornithogenesis, represented by the Rookeries Distance covariate, consists in the influence of seabirds (mainly penguins) in soil genesis by the deposition and microbial decomposition of guano, which enriches the soil through a sea-land transfer of nutrients (Abakumov et al, 2021;Bokhorst et al, 2007), notably P (which explains the great importance for this attribute), and promotes intense geochemical changes through the interaction of the guano leachates with the mineral substrate Pereira et al, 2013;Tatur and Barczuk, 1985). The ornithogenesis is more effective in MA due to the large presence of rookeries, which explains the highest contents of P predicted in this region, with the already cited exception of Hope Bay.…”

Section: Soil Variability and Soil-environment Relationshipsmentioning

confidence: 99%

Aprendizado de máquinas aplicado ao mapeamento digital de solos na Antártica: modelagem e predição espacial de classes e atributos do solo

Siqueira¹

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O mapeamento convencional de solos baseado em modelos mentais é uma abordagem comum para compreensão da distribuição dos solos na Antártica. No entanto, o Mapeamento Digital de Solos baseado em modelos empíricos e quantitativos tem sido escassamente aplicado no continente. As vantagens do mapeamento digital são de grande relevância em paisagens remotas como as áreas livres de gelo da Antártica, onde coletas de solos são muito limitadas. Além disso, existe uma necessidade de dados precisos de solos para a Antártica, especialmente sob as pressões impostas atualmente pelas mudanças climáticas e distúrbios antrópicos no continente. Neste trabalho foram preditas as distribuições espaciais, nas regiões da Antártica Marítima e Península Antártica, de importantes atributos físico-químicos do solo: areia, silte, argila, soma de bases, H+Al, pH, carbono orgânico total, P, Na e P remanescente; e de classes de solos identificadas com os sistemas Soil Taxonomy and World Reference Base – FAO. Para isso, foi utilizada a base de dados de solos do Grupo Terrantar da Universidade Federal de Viçosa - Brasil, compilada a partir de trabalhos de campo realizados durante 20 anos na Antártica. Também foi usado um grande conjunto de covariáveis preditoras representando os fatores do modelo scorpan: atributos do terreno gerados a partir de Modelo Digital de Elevação, dados multiespectrais Sentinel representando covariáveis de vegetação, distâncias euclidianas para geleiras, costa e pinguineiras, geologia, coordenadas e outros atributos do solo. Para a modelagem e mapeamento, técnicas de Aprendizado de Máquinas foram aplicadas e diferentes modelos foram testados, destacando-se o modelo Random Forest. Este estudo mostra o potencial da aplicação da metodologia do Mapeamento Digital de Solos para produção de mapas detalhados na Antártica, um continente geralmente negligenciado para mapeamentos devido à ausência de dados de solos robustos. Com nossos resultados, pretendemos subsidiar a tomada de decisão sobre solos na Antártica, além de fornecer dados pioneiros que podem ser incorporados em modelos ecológicos globais. Palavras-chave: Antártica. Aprendizado de Máquinas. Mapeamento Digital de Solos. Modelagem. Predição espacial.

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Comprehensive study on saline-alkali soil amelioration with sediment of irrigation area in northeast China

Zhao

Zhang

et al. 2023

Arabian Journal of Chemistry

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The influence of brown and south polar skua on the content of plant nutrient in the soils from the Fildes Peninsula (King George Island, West Antarctica)

Cited by 11 publications

References 20 publications

The Content of Polyarenes in Soils of Antarctica: Variability across Landscapes

The Content of Polyarenes in Soils of Antarctica: Variability across Landscapes

Aprendizado de máquinas aplicado ao mapeamento digital de solos na Antártica: modelagem e predição espacial de classes e atributos do solo

Comprehensive study on saline-alkali soil amelioration with sediment of irrigation area in northeast China

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