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Ornithogenesis and soil-landscape interplays at northern Harmony Point, Nelson Island, Maritime Antarctica.
Sacramento, Iorrana F; Schaefer, Carlos Ernesto G R; Siqueira, Rafael G; Corrêa, Guilherme R; Putzke, Jair; Michel, Roberto F M; Francelino, Márcio R.
Afiliação
  • Sacramento IF; Universidade Federal de Viçosa, Departamento de Solos, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil.
  • Schaefer CEGR; Universidade Federal de Viçosa, Departamento de Solos, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil.
  • Siqueira RG; Universidade Federal de Viçosa, Departamento de Solos, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil.
  • Corrêa GR; Instituto de Geografia, Av. João Naves de Ávila, 2121, Campus Santa Mônica, Bloco 1H, Sala 25, Santa Mônica, 38400-902 Uberlândia, MG, Brazil.
  • Putzke J; Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal do Pampa, Av. Antônio Trilha, Campus de São Gabriel, Centro, 97300-000 São Gabriel, RS, Brazil.
  • Michel RFM; Universidade Estadual de Santa Cruz, Departamento de Ciências Agrárias e Ambientais, Rodovia Jorge Amado, Km 1, 45662-900 Ilhéus, BA Brazil.
  • Francelino MR; Universidade Federal de Viçosa, Departamento de Solos, Av. Peter Henry Rolfs, s/n, Campus Universitário, 36570-900 Viçosa, MG, Brazil.
An Acad Bras Cienc ; 95(suppl 3): e20230722, 2023.
Article em En | MEDLINE | ID: mdl-38126384
ABSTRACT
Understanding the influence of soil-forming factors and processes in ornithogenic soils is important to predict impacts of climate change on Antarctic ecosystems. Herein, we analyzed the soil-landscape interplays and development of ornithogenic soils at Harmony Point (HP), Nelson Island. We collected, described, and classified 24 soil profiles, combined with vegetation and landforms descriptions. Geoprocessing techniques were employed for mapping. Soil physical, chemical, geochemical, and mineralogical analyses were applied. Patterned ground, "Ornithogenic"/Typic Gelorthent, and moss carpets were the dominant landform, soil and vegetation classes, respectively. Soils from rocky outcrops were more structured, acidic, with higher organic carbon, organometallic complexes, and secondary phosphate minerals, due to former bird influence. Soils from cryoplanated platforms presented higher water pH, base saturation, clay content, and secondary silicate minerals. Soils from marine terraces presented high exchangeable bases, phosphorous, and amorphous phosphate minerals. Soil chemical weathering is enhanced by ornithogenesis and widespread in HP. Besides ornithogenesis, organic matter accumulation, cryoturbation, and cryoclastic processes are also important to pedogenesis of ornithogenic soils. The soils of the cryoplanated platforms exhibited a gradient of pedogenetic development corresponding to increasing biota influence and distance from glacier. In contrast, soils of rocky outcrops were more developed even close to the glacier, due to ornithogenesis.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solo / Ecossistema Idioma: En Revista: An Acad Bras Cienc Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solo / Ecossistema Idioma: En Revista: An Acad Bras Cienc Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil