Academic Journal
Biological sources and sinks of dimethylsulfide disentangled by an induced bloom experiment and a numerical model
| العنوان: | Biological sources and sinks of dimethylsulfide disentangled by an induced bloom experiment and a numerical model |
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| المؤلفون: | Le Gland, Guillaume, Masdeu-Navarro, Marta, Galí, Martí, Vallina, Sergio, M, Gralka, Matti, Vincent, Flora, Cordero, Otto, Vardi, Assaf, Simó, Rafel |
| المساهمون: | Institute of Marine Sciences / Institut de Ciències del Mar Barcelona (ICM), Consejo Superior de Investigaciones Cientificas España = Spanish National Research Council Spain (CSIC), Institut méditerranéen d'océanologie (MIO), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Instituto Espagňol de Oceanografia (IEO), Department of Civil and Environmental Engineering Cambridge (CEE), Massachusetts Institute of Technology (MIT), Vrije Universiteit Amsterdam Amsterdam (VU), Weizmann Institute of Science Rehovot, Israël, EMBL Heidelberg, This research was also supported by a grant from the Simons Foundation (599207, Matti Gralka). The Institute of Marine Sciences (ICM—CSIC) is supported by a “Severo Ochoa” Centre of Excellence grant (CEX2019-000928-S) from the Spanish government. We acknowledge support of the publication fee by the CSIC Open Access Publication Support Initiative through its Unit of Information Resources for Research (URICI)., European Project: 834162,SUMMIT |
| المصدر: | ISSN: 0024-3590. |
| بيانات النشر: | HAL CCSD Association for the Sciences of Limnology and Oceanography |
| سنة النشر: | 2023 |
| المجموعة: | Université de Toulon: HAL |
| مصطلحات موضوعية: | Dimethylsulfide, Ecological Modeling, Induced phytoplankton bloom, [SDE]Environmental Sciences, [SDV]Life Sciences [q-bio] |
| الوصف: | International audience ; Dimethylsulfide (DMS) is a climatically active trace gas promoting cloud formation. The biochemical precursor of DMS, dimethylsulfoniopropionate (DMSP), is a phytoplankton metabolite and a source of reduced sulfur for many microbial species. Because of the complex interactions between their many producers and consumers, the dynamics of DMSP and DMS in the ocean are still poorly constrained. In this study we measure particulate DMSP, dissolved DMSP (), and DMS concentrations in seven mesocosms where two consecutive phytoplankton blooms (first, pico‐ and nano‐algae; second, Emiliania huxleyi ) were induced by nutrient addition, and we build a mechanistic numerical model to identify the sources and sinks that best account for the observations. The mesocosms were designed as replicates but differ from each other by their E. huxleyi virus abundance due to stochastic differences in initial conditions. The model shows that heterotrophic bacteria cannot be the only consumers of . A fraction of dissolved must be consumed by phytoplankton to avoid excessive accumulation during the first bloom. The induced blooms increase DMS concentration by 220% on average, until an increase in the abundance of DMS‐consuming bacteria brings DMS concentration back to its pre‐bloom value, after 3 weeks of experiment. Therefore phytoplankton blooms can increase DMS emission to the atmosphere, but only during a transient regime of a few weeks. The model also shows that the DMS yield, production and emission are increased when the coccolithophore bloom is terminated by a viral infection, but decreased if the infection occurs several days before the bloom can reach its maximum. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | info:eu-repo/grantAgreement//834162/EU/ERC Advanced Grant/SUMMIT; hal-04361414; https://hal.science/hal-04361414; https://hal.science/hal-04361414/document; https://hal.science/hal-04361414/file/LEGLAND_etal_2023_%23DMOS-Bloom_%23L%26O.pdf |
| DOI: | 10.1002/lno.12470 |
| الاتاحة: | https://hal.science/hal-04361414 https://hal.science/hal-04361414/document https://hal.science/hal-04361414/file/LEGLAND_etal_2023_%23DMOS-Bloom_%23L%26O.pdf https://doi.org/10.1002/lno.12470 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.8F530C26 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1002/lno.12470 |
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