Ornithogenesis and soil-landscape interplays at northern Harmony Point, Nelson Island, Maritime Antarctica
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...
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ftdoajarticles:oai:doaj.org/article:836d76b983ae4dc49b1c8bb152ee5544 2024-01-21T10:01:43+01:00 Ornithogenesis and soil-landscape interplays at northern Harmony Point, Nelson Island, Maritime Antarctica IORRANA F. SACRAMENTO CARLOS ERNESTO G.R. SCHAEFER RAFAEL G. SIQUEIRA GUILHERME R. CORRÊA JAIR PUTZKE ROBERTO F.M. MICHEL MÁRCIO R. FRANCELINO 2023-12-01T00:00:00Z https://doi.org/10.1590/0001-3765202320230722 https://doaj.org/article/836d76b983ae4dc49b1c8bb152ee5544 EN eng Academia Brasileira de Ciências http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652023000601504&lng=en&tlng=en http://www.scielo.br/pdf/aabc/v95s3/0001-3765-aabc-95-s3-e20230722.pdf https://doaj.org/toc/1678-2690 1678-2690 doi:10.1590/0001-3765202320230722 https://doaj.org/article/836d76b983ae4dc49b1c8bb152ee5544 Anais da Academia Brasileira de Ciências, Vol 95, Iss suppl 3 (2023) cryosols cryoturbation pedogenesis phosphatization Science Q article 2023 ftdoajarticles https://doi.org/10.1590/0001-3765202320230722 2023-12-24T01:45:06Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica Nelson Island Directory of Open Access Journals: DOAJ Articles Antarctic Harmony Point ENVELOPE(-59.240,-59.240,-62.305,-62.305) Nelson Island ENVELOPE(-59.050,-59.050,-62.300,-62.300) Anais da Academia Brasileira de Ciências 95 suppl 3 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
cryosols cryoturbation pedogenesis phosphatization Science Q |
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cryosols cryoturbation pedogenesis phosphatization Science Q IORRANA F. SACRAMENTO CARLOS ERNESTO G.R. SCHAEFER RAFAEL G. SIQUEIRA GUILHERME R. CORRÊA JAIR PUTZKE ROBERTO F.M. MICHEL MÁRCIO R. FRANCELINO Ornithogenesis and soil-landscape interplays at northern Harmony Point, Nelson Island, Maritime Antarctica |
topic_facet |
cryosols cryoturbation pedogenesis phosphatization Science Q |
description |
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. |
format |
Article in Journal/Newspaper |
author |
IORRANA F. SACRAMENTO CARLOS ERNESTO G.R. SCHAEFER RAFAEL G. SIQUEIRA GUILHERME R. CORRÊA JAIR PUTZKE ROBERTO F.M. MICHEL MÁRCIO R. FRANCELINO |
author_facet |
IORRANA F. SACRAMENTO CARLOS ERNESTO G.R. SCHAEFER RAFAEL G. SIQUEIRA GUILHERME R. CORRÊA JAIR PUTZKE ROBERTO F.M. MICHEL MÁRCIO R. FRANCELINO |
author_sort |
IORRANA F. SACRAMENTO |
title |
Ornithogenesis and soil-landscape interplays at northern Harmony Point, Nelson Island, Maritime Antarctica |
title_short |
Ornithogenesis and soil-landscape interplays at northern Harmony Point, Nelson Island, Maritime Antarctica |
title_full |
Ornithogenesis and soil-landscape interplays at northern Harmony Point, Nelson Island, Maritime Antarctica |
title_fullStr |
Ornithogenesis and soil-landscape interplays at northern Harmony Point, Nelson Island, Maritime Antarctica |
title_full_unstemmed |
Ornithogenesis and soil-landscape interplays at northern Harmony Point, Nelson Island, Maritime Antarctica |
title_sort |
ornithogenesis and soil-landscape interplays at northern harmony point, nelson island, maritime antarctica |
publisher |
Academia Brasileira de Ciências |
publishDate |
2023 |
url |
https://doi.org/10.1590/0001-3765202320230722 https://doaj.org/article/836d76b983ae4dc49b1c8bb152ee5544 |
long_lat |
ENVELOPE(-59.240,-59.240,-62.305,-62.305) ENVELOPE(-59.050,-59.050,-62.300,-62.300) |
geographic |
Antarctic Harmony Point Nelson Island |
geographic_facet |
Antarctic Harmony Point Nelson Island |
genre |
Antarc* Antarctic Antarctica Nelson Island |
genre_facet |
Antarc* Antarctic Antarctica Nelson Island |
op_source |
Anais da Academia Brasileira de Ciências, Vol 95, Iss suppl 3 (2023) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652023000601504&lng=en&tlng=en http://www.scielo.br/pdf/aabc/v95s3/0001-3765-aabc-95-s3-e20230722.pdf https://doaj.org/toc/1678-2690 1678-2690 doi:10.1590/0001-3765202320230722 https://doaj.org/article/836d76b983ae4dc49b1c8bb152ee5544 |
op_doi |
https://doi.org/10.1590/0001-3765202320230722 |
container_title |
Anais da Academia Brasileira de Ciências |
container_volume |
95 |
container_issue |
suppl 3 |
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1788691784304427008 |