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Updated extinction risk of seagrass species in the tropical atlantic bioregion

2025-10-08Journal article Open access
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dc.contributor.authorSamper-Villarreal, Jimena
dc.contributor.authorCreed, Joel C.
dc.contributor.authorFrade, Duarte
dc.contributor.authorFurman, Bradley T.
dc.contributor.authorBandeira, Salomão
dc.contributor.authorEl-Hacen, Hacen M.
dc.contributor.authorPeralta, A. Carolina
dc.contributor.authorSerrao, Ester A.
dc.contributor.authorVegas, Beatriz E. Vera
dc.contributor.authorTussenbroek, Brigitta I. van
dc.date.accessioned2025-11-05T14:38:41Z
dc.date.available2025-11-05T14:38:41Z
dc.date.issued2025-10-08
dc.description.abstractSeagrasses can form vast meadows in coastal areas and provide valuable ecosystem services. Despite their importance, seagrasses are threatened, and their spatial extent and ecological condition have declined worldwide. Globally, there are six seagrass bioregions based on ocean basin and species distribution. The Tropical Atlantic Bioregion encompasses seagrasses in the warm waters off the Atlantic American continent, the eastern Pacific and the west coast of Africa. Here, the extinction risk of the species was determined through the Categories and Criteria of the IUCN Red List of Threatened Species. The extinction risk for the 15 native seagrass species in the bioregion was assessed and summarized as an update to the previous IUCN effort, conducted 15 years ago. The updated regional assessments were based on expert opinion and compilation of revised data on species´ distribution, population status and trend. Of the 15 native species, nine were endemic to the bioregion; thus, the regional assessment was also a global one. Two other species were typical for the region but also occurred beyond bioregional boundaries (Halodule beaudettei and H. wrightii). The remaining species were either distributed circumglobally (2 species), or consisted of peripheral populations of species characteristic of neighboring bioregions (2 species). The detailed information of 15 assessments have been made freely accessible in an open repository. Nine species maintained their previous risk of extinction status, while one species (Thalassia testudinum) changed from the Least Concern to the Near Threatened category. Downgrading of the status of T. testudinum is worrying, as this is the dominant climax species in the wider Caribbean. Its replacement by less resistant and smaller but faster growing species, such as Syringodium filiforme and H. wrightii (both classified as Least Concern), could compromise the ecosystem services of seagrasses in this bioregion. An additional two species had been recently introduced, and are also briefly covered. The assessments included past and present taxonomical uncertainties of various assessed species. Issues concerning the current boundaries of the bioregions themselves were also encountered. To address this and better capture future and ongoing range expansion or reduction associated with climate change, we propose overlapping transitional boundaries with neighboring seagrass bioregions.eng
dc.description.sponsorshipSFRH/BD/147343/2019
dc.identifier.doi10.3389/fcosc.2025.1656995
dc.identifier.issn2673-611X
dc.identifier.urihttp://hdl.handle.net/10400.1/27876
dc.language.isoeng
dc.peerreviewedyes
dc.publisherFrontiers Media
dc.relationMarine Forests of animals, plants and algae: nature-based tools to protect and restore biodiversity
dc.relationAlgarve Centre for Marine Sciences
dc.relationCentre for Marine and Environmental Research
dc.relation.ispartofFrontiers in Conservation Science
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectMarine angiosperms
dc.subjectIUCN red list of threatened species
dc.subjectBioregional extinction assessment
dc.subjectHalodule
dc.subjectHalophila
dc.subjectRuppia
dc.subjectSyringodium
dc.subjectThalassia
dc.titleUpdated extinction risk of seagrass species in the tropical atlantic bioregioneng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMarine Forests of animals, plants and algae: nature-based tools to protect and restore biodiversity
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/DivRestore%2F0013%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.citation.titleFrontiers in Conservation Science
oaire.citation.volume6
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameFrade
person.familyNameSerrao
person.givenNameDuarte
person.givenNameEster A.
person.identifierC-6686-2012
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.orcid0000-0002-2809-7241
person.identifier.orcid0000-0003-1316-658X
person.identifier.scopus-author-id7004093604
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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