Biochemistry and associated fauna of holopelagic Sargassum spp. in the Caribbean Sea
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Le résumé fourni par la source
Abstract Holopelagic Sargassum spp. (sargassum) are the founding species of diverse communities in the Sargasso Sea. Since 2011, a new area of concentration of these algae was formed in the equatorial North Atlantic and Caribbean Sea. We analyzed elemental composition, and the small mobile fauna associated with sargassum collected at 41 stations, during two expeditions in the Caribbean Sea in 2018 and 2019, that covered open-sea stations in two marine ecoregions, and coastal stations (< 20 km from the shore) in one of them. Metal(loid) concentrations generally followed the order As > Zn > Cu > Cd > Se > Pb > Hg, and contents of As (195.5 ± 13.7 µg g −1 ), Cd (0.59 ± 0.02 µg g −1 ), and Hg (0.22 ± 0.09 µg g −1 ) were highest in S. fluitans III in the South-Western-Caribbean ecoregion. Mean [Ctot] per ecoregion varied between 26.1 and 30.1 mg g −1 , and variation was mainly accounted for by higher [Cinorg] (likely produced by calcifying epibionts) in the South-Western Caribbean (10.12) compared to the Western Caribbean (8.92 and 7.19); this tendency that was also found for [Ntot] (between 1.06 and 1.27), and these contents were positively correlated with seawater chlorophyll concentrations. Sixty-six taxa of mobile fauna were identified, with the phylum Arthropoda being most abundant and diverse. The faunal community composition was similar in both open-sea regions, but differed in the coastal stations, which was mostly explained by differential relative abundance of Latreutes fucorum, Carpias minutus , Litiopa melanostoma, and some fish species. The Caribbean open-sea rafts harbor a diverse fauna comparable to that found in the Sargasso Sea, and likely provide similar ecosystem services, and thus merit similar protective efforts as those directed towards sargassum in the Sargasso Sea.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Biochemistry and associated fauna of holopelagic Sargassum spp. in the Caribbean Sea
- Date Crossref
- 24/09/2024
- Éditeur
- Springer Science and Business Media LLC
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Instituto de Ciencias del Mar y Limnología Universidad Nacional Autónoma de México (UNAM) pays non établi dans la noticeStructure de recherche
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Universidad Nacional Autónoma de México pays non établi dans la noticeUniversité ou école supérieure
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Cultura pays non établi dans la noticeOrganisme public
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Yo quiero Yo puedo pays non établi dans la noticeInstitution
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Instituto de Pesca pays non établi dans la noticeStructure de recherche
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Universidad Autónoma de la Ciudad de México pays non établi dans la noticeUniversité ou école supérieure
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UNAM pays non établi dans la noticeInstitution
Universidad Nacional Autónoma de México (UNAM) — Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México et Cultura, avec 4 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.