Dissolved organic matter characteristics and nitrogen transformation rates in sediments of Pojo Bay, Finland
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2019
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| _version_ | 1867170474220322816 |
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| author | Aalto, Sanni L Asmala, Eero Jilbert, Tom Hietanen, Susanna |
| author_facet | Aalto, Sanni L Asmala, Eero Jilbert, Tom Hietanen, Susanna |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Coastal environments are considered to be nitrogen (N) removal hot spots, regulating the amount of land-derived N reaching the open sea. However, gradual mixing of fresh and saline water masses alters the availability nitrate and bioavailable carbon from near-shore to offshore, which may alter the function of "coastal filter". Here, we combine stable isotope analysis, N2O measurements and organic carbon characterization, and show that a significant amount of the N removed in estuary is released as greenhouse gas nitrous oxide (N2O), while archipelago areas are characterized by efficient recycling of N in coastal Baltic Sea, challenging the current understanding on role of these regions as filters of land-to-sea transfer of N. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_902371 |
| institution | PANGAEA |
| language | en |
| publishDate | 2019 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Dissolved organic matter characteristics and nitrogen transformation rates in sediments of Pojo Bay, Finland Aalto, Sanni L Asmala, Eero Jilbert, Tom Hietanen, Susanna Denitrification; DNRA; DOM; Estuary; Nitrous oxide; sediment organic matter Coastal environments are considered to be nitrogen (N) removal hot spots, regulating the amount of land-derived N reaching the open sea. However, gradual mixing of fresh and saline water masses alters the availability nitrate and bioavailable carbon from near-shore to offshore, which may alter the function of "coastal filter". Here, we combine stable isotope analysis, N2O measurements and organic carbon characterization, and show that a significant amount of the N removed in estuary is released as greenhouse gas nitrous oxide (N2O), while archipelago areas are characterized by efficient recycling of N in coastal Baltic Sea, challenging the current understanding on role of these regions as filters of land-to-sea transfer of N. |
| title | Dissolved organic matter characteristics and nitrogen transformation rates in sediments of Pojo Bay, Finland |
| topic | Denitrification; DNRA; DOM; Estuary; Nitrous oxide; sediment organic matter |
| url | https://doi.org/10.1594/PANGAEA.902371 |