Electronic Resource
Sulfide Toxicity as Key Control on Anaerobic Oxidation of Methane in Eutrophic Coastal Sediments
| العنوان: | Sulfide Toxicity as Key Control on Anaerobic Oxidation of Methane in Eutrophic Coastal Sediments |
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| المؤلفون: | Dalcin Martins, Paula, de Monlevad, João P.R.C., Echeveste Medrano, Maider J., Lenstra, Wytze Klaas, Wallenius, Anna Julia, Hermans, Martijn, Slomp, Caroline P., Welte, Cornelia Ulrike, Jetten, Mike S.M., van Helmond, Niels A.G.M. |
| المصدر: | Environmental Science and Technology vol.58 (2024) date: 2024-07-01 nr.26 p.11421-11435 [ISSN 0013-936X] |
| بيانات النشر: | 2024 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | Coastal zones account for 75% of marine methane emissions, despite covering only 15% of the ocean surface area. In these ecosystems, the tight balance between methane production and oxidation in sediments prevents most methane from escaping into seawater. However, anthropogenic activities could disrupt this balance, leading to an increased methane escape from coastal sediments. To quantify and unravel potential mechanisms underlying this disruption, we used a suite of biogeochemical and microbiological analyses to investigate the impact of anthropogenically induced redox shifts on methane cycling in sediments from three sites with contrasting bottom water redox conditions (oxic-hypoxic-euxinic) in the eutrophic Stockholm Archipelago. Our results indicate that the methane production potential increased under hypoxia and euxinia, while anaerobic oxidation of methane was disrupted under euxinia. Experimental, genomic, and biogeochemical data suggest that the virtual disappearance of methane-oxidizing archaea at the euxinic site occurred due to sulfide toxicity. This could explain a near 7-fold increase in the extent of escape of benthic methane at the euxinic site relative to the hypoxic one. In conclusion, these insights reveal how the development of euxinia could disrupt the coastal methane biofilter, potentially leading to increased methane emissions from coastal zones. |
| مصطلحات الفهرس: | anaerobic oxidation of methane, coastal sediments, eutrophication, euxinia, Article |
| URL: | |
| الاتاحة: | Open access content. Open access content info:eu-repo/semantics/openAccess |
| ملاحظة: | DOI: 10.1021/acs.est.3c10418 English |
| Other Numbers: | QGJ oai:research-portal.uu.nl:publications/91c7a877-7eea-4fb3-b69a-ea254ca12ba4 1445836069 |
| المصدر المساهم: | UNIVERSITEIT UTRECHT From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1445836069 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |