Szczegóły publikacji
Opis bibliograficzny
The effect of freshwater discharge on the microbial-induced precipitation of minerals in a Baltic Sea bottom pockmark / Grzegorz RZEPA, Andrzej BORKOWSKI, Maciej MANECKI, Aleksandra Brodecka-Goluch, Katarzyna Łukawska-Matuszewska, Jarosław KANIA, Artur BŁACHOWSKI, Paweł DZIAŁAK, Izabela De Mey-Śnieżyńska // Oceanologia [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 2300-7370 . — 2026 — vol. 68 iss. 3 art. no. 68301, s. 1–25. — Bibliogr. s. 20–25, Abstr.
Autorzy (9)
- AGHRzepa Grzegorz
- AGHBorkowski Andrzej
- AGHManecki Maciej
- Brodecka-Goluch Aleksandra
- Łukawska-Matuszewska Katarzyna
- AGHKania Jarosław
- AGHBłachowski Artur
- AGHDziałak Paweł
- De Mey-Śnieżyńska Izabela
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 169708 |
|---|---|
| Data dodania do BaDAP | 2026-09-29 |
| Tekst źródłowy | URL |
| DOI | 10.5697/NDCH3019 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Oceanologia |
Abstract
Seabed pockmarks are circular or elongated depressions usually formed by the outflow of methane and groundwater. The accumulation of organic matter and disruption of sediments by the seepage result in specific biogeochemical conditions affecting both porewater and sediment composition. In this study, we have shown how freshwater intrusions and the presence of methane affect the biogeochemistry and mineralogy of the pockmark environment within continental shelf sea sediments. Porewater and sediment samples collected during an active freshwater seepage were compared with samples taken from the same location between seeps and from a nearby reference station. Porewater chemistry and the mineralogy of the sediments were combined with thermodynamic modeling. The bacterial and archaeal taxa were also identified via metagenomic analysis. It was found that freshwater seepage modifies the composition of pore water and affects both the degree of supersaturation of solutions relative to sediment minerals and the composition of the microbial system. A conceptual model has been proposed indicating that changes in sediment mineral composition due to freshwater discharge reflect the response of the microbial community to changes in pore water composition.
