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| Main Authors: | , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Science advances
2024
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/39514667/ |
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| _version_ | 1868266282465361920 |
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| author | Smith, Chloe L Harvey, Elizabeth L Johnson, Matthew D Subhas, Adam V |
| author_facet | Smith, Chloe L Harvey, Elizabeth L Johnson, Matthew D Subhas, Adam V Smith, Chloe L Harvey, Elizabeth L Johnson, Matthew D Subhas, Adam V |
| collection | PubMed - marine biology |
| contents | Microzooplankton grazing on the coccolithophore and its role in the global calcium carbonate cycle. Smith, Chloe L Harvey, Elizabeth L Johnson, Matthew D Subhas, Adam V Calcium Carbonate Haptophyta Animals Zooplankton Seawater Hydrogen-Ion Concentration Carbon Dioxide Oceans and Seas Identifying mechanisms driving the substantial dissolution of biogenic CaCO (60 to 80%) in surface and mesopelagic waters of the global ocean is critical for constraining the surface ocean's alkalinity and inorganic carbon budgets. We examine microzooplankton grazing on coccolithophores, photosynthetic calcifying algae responsible for a majority of open-ocean CaCO production, as a mechanism driving shallow dissolution. We show that microzooplankton grazing dissolves 92 ± 7% of ingested coccolith calcite, which may explain 50 to 100% of the observed CaCO dissolution in supersaturated surface waters. Microzooplankton grazing on coccolithophores is thus a substantial, previously unrecognized biological mechanism affecting the ballasting of organic carbon to deeper waters, the ecology and fitness of microzooplankton themselves due to buffering of food vacuole pH, and ultimately the continued ability of the surface ocean to take up atmospheric carbon dioxide. |
| format | Artículo científico |
| id | pubmed_39514667 |
| institution | PubMed |
| language | en |
| publishDate | 2024 |
| publisher | Science advances |
| record_format | pubmed |
| spellingShingle | Microzooplankton grazing on the coccolithophore and its role in the global calcium carbonate cycle. Smith, Chloe L Harvey, Elizabeth L Johnson, Matthew D Subhas, Adam V Calcium Carbonate Haptophyta Animals Zooplankton Seawater Hydrogen-Ion Concentration Carbon Dioxide Oceans and Seas Microzooplankton grazing on the coccolithophore and its role in the global calcium carbonate cycle. Smith, Chloe L Harvey, Elizabeth L Johnson, Matthew D Subhas, Adam V Calcium Carbonate Haptophyta Animals Zooplankton Seawater Hydrogen-Ion Concentration Carbon Dioxide Oceans and Seas Identifying mechanisms driving the substantial dissolution of biogenic CaCO (60 to 80%) in surface and mesopelagic waters of the global ocean is critical for constraining the surface ocean's alkalinity and inorganic carbon budgets. We examine microzooplankton grazing on coccolithophores, photosynthetic calcifying algae responsible for a majority of open-ocean CaCO production, as a mechanism driving shallow dissolution. We show that microzooplankton grazing dissolves 92 ± 7% of ingested coccolith calcite, which may explain 50 to 100% of the observed CaCO dissolution in supersaturated surface waters. Microzooplankton grazing on coccolithophores is thus a substantial, previously unrecognized biological mechanism affecting the ballasting of organic carbon to deeper waters, the ecology and fitness of microzooplankton themselves due to buffering of food vacuole pH, and ultimately the continued ability of the surface ocean to take up atmospheric carbon dioxide. |
| title | Microzooplankton grazing on the coccolithophore and its role in the global calcium carbonate cycle. |
| topic | Calcium Carbonate Haptophyta Animals Zooplankton Seawater Hydrogen-Ion Concentration Carbon Dioxide Oceans and Seas |
| url | https://pubmed.ncbi.nlm.nih.gov/39514667/ |