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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2025
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| Online Access: | https://doi.org/10.1594/PANGAEA.972738 |
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| _version_ | 1867168230899974144 |
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| author | Martinez Rendon, Ana Cristina Braun, Christina Kappelsberger, Maria T Boy, Jens Casanova-Katny, Angelica Glaser, Karin Dumack, Kenneth |
| author_facet | Martinez Rendon, Ana Cristina Braun, Christina Kappelsberger, Maria T Boy, Jens Casanova-Katny, Angelica Glaser, Karin Dumack, Kenneth |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Soil algae are the most important primary producers where vascular plants are absent, as in the Arctic and Antarctica. They give rise to species-rich microbial food webs in biological soil crusts (biocrusts). The terrestrial snow- and ice-free areas are in permanent expansion as glaciers retreat, leaving behind extensive areas of uncovered rock and new soil. Biocrusts stabilize the soil surface and have an important role in soil development. However, the microbial food webs and the nutrient and energy flow to higher trophic levels remain largely unexplored. Here, we characterized the microbial predator-prey dynamics of polar soils by combining molecular and traditional culturing techniques. Using high-throughput sequencing of environmental samples, we assessed the biodiversity and function of soil protists, applying a trait-based approach for acquiring and describing functional traits, i.e., the feeding behavior of heterotrophic protists in relation to microalgae. The study encompasses the analysis of biocrust samples of three polar regions. In the Arctic, one region was sampled - Svalbard in the Arctic Ocean (78°N) in July 2021. In Antarctica, two regions were studied, i.e. King George Island (62°S) in the South Shetland archipelago of Maritime Antarctica and the Thala Hills oasis in Enderby Land, East Antarctica (67°S), between January and March 2022. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_972738 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Algivorous Cercozoa shape the community composition of cryptogamic covers, the dominant vegetation in Polar Regions Martinez Rendon, Ana Cristina Braun, Christina Kappelsberger, Maria T Boy, Jens Casanova-Katny, Angelica Glaser, Karin Dumack, Kenneth Antarctica; Biocrusts; Calculated; Carbon, organic, total; Carbon/Nitrogen ratio; Cercozoa; CHSN Elemental Analyser, Elementar Analysen systeme GmbH, Germany, vario EL III; Continental_Antarctica_Blisnetzow; Continental_Antarctica_Molodezhnaya; Continental_Antarctica_Ovalnoye-Glubokoye; Continental_Antarctica_Sandiger_See; Date/Time of event; Event label; Green Algae; King_George_Island_Antarctica_Bellingshausen; King_George_Island_Antarctica_Collins_2; King_George_Island_Antarctica_Collins_3; King_George_Island_Antarctica_Collins_4; King_George_Island_Antarctica_Kristianka; King_George_Island_Antarctica_Meseta_1; King_George_Island_Antarctica_Meseta_2; King_George_Island_Antarctica_Meseta_3; King_George_Island_Antarctica_Meseta_Cruz; King_George_Island_Antarctica_Suffield_Point; Latitude of event; Location; Longitude of event; microbial communities; Nitrogen, total; Number; Ochrophyta; pH; pH measurement in Calcium Chloride Solution; Phosphorus; predator-prey dynamics; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; protists; Sample comment; Sample ID; Site; Soil outcrop; Spectral photometry, molybdenum blue; SPP1158; Svalbard; Svalbard_Edge_of_Longyearbyen; Svalbard_Foxfonna_I; Svalbard_Foxfonna_II; Svalbard_Glacier_bird_nests; Svalbard_Near_cole_mine; Svalbard_Near_seed_vault; Svalbard_Plateou; Svalbard_Small_glacier; Svalbard_West_valley Soil algae are the most important primary producers where vascular plants are absent, as in the Arctic and Antarctica. They give rise to species-rich microbial food webs in biological soil crusts (biocrusts). The terrestrial snow- and ice-free areas are in permanent expansion as glaciers retreat, leaving behind extensive areas of uncovered rock and new soil. Biocrusts stabilize the soil surface and have an important role in soil development. However, the microbial food webs and the nutrient and energy flow to higher trophic levels remain largely unexplored. Here, we characterized the microbial predator-prey dynamics of polar soils by combining molecular and traditional culturing techniques. Using high-throughput sequencing of environmental samples, we assessed the biodiversity and function of soil protists, applying a trait-based approach for acquiring and describing functional traits, i.e., the feeding behavior of heterotrophic protists in relation to microalgae. The study encompasses the analysis of biocrust samples of three polar regions. In the Arctic, one region was sampled - Svalbard in the Arctic Ocean (78°N) in July 2021. In Antarctica, two regions were studied, i.e. King George Island (62°S) in the South Shetland archipelago of Maritime Antarctica and the Thala Hills oasis in Enderby Land, East Antarctica (67°S), between January and March 2022. |
| title | Algivorous Cercozoa shape the community composition of cryptogamic covers, the dominant vegetation in Polar Regions |
| topic | Antarctica; Biocrusts; Calculated; Carbon, organic, total; Carbon/Nitrogen ratio; Cercozoa; CHSN Elemental Analyser, Elementar Analysen systeme GmbH, Germany, vario EL III; Continental_Antarctica_Blisnetzow; Continental_Antarctica_Molodezhnaya; Continental_Antarctica_Ovalnoye-Glubokoye; Continental_Antarctica_Sandiger_See; Date/Time of event; Event label; Green Algae; King_George_Island_Antarctica_Bellingshausen; King_George_Island_Antarctica_Collins_2; King_George_Island_Antarctica_Collins_3; King_George_Island_Antarctica_Collins_4; King_George_Island_Antarctica_Kristianka; King_George_Island_Antarctica_Meseta_1; King_George_Island_Antarctica_Meseta_2; King_George_Island_Antarctica_Meseta_3; King_George_Island_Antarctica_Meseta_Cruz; King_George_Island_Antarctica_Suffield_Point; Latitude of event; Location; Longitude of event; microbial communities; Nitrogen, total; Number; Ochrophyta; pH; pH measurement in Calcium Chloride Solution; Phosphorus; predator-prey dynamics; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; protists; Sample comment; Sample ID; Site; Soil outcrop; Spectral photometry, molybdenum blue; SPP1158; Svalbard; Svalbard_Edge_of_Longyearbyen; Svalbard_Foxfonna_I; Svalbard_Foxfonna_II; Svalbard_Glacier_bird_nests; Svalbard_Near_cole_mine; Svalbard_Near_seed_vault; Svalbard_Plateou; Svalbard_Small_glacier; Svalbard_West_valley |
| url | https://doi.org/10.1594/PANGAEA.972738 |