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A new diatom species from a transitional environment (Arade river estuary, Portugal): Tetramphora witkowskii sp. nov.

2025-05-09Journal article Open access
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dc.contributor.authorGomes, Ana
dc.contributor.authorHamilton, Paul Brian
dc.contributor.authorSolak, Cüneyt Nadir
dc.contributor.authorBoski, Tomasz
dc.contributor.authorMoura, Delminda
dc.contributor.authorErtorun, Nesil
dc.contributor.authorYedidağ, Ferhan
dc.date.accessioned2025-07-04T09:24:20Z
dc.date.available2025-07-04T09:24:20Z
dc.date.issued2025-05-09
dc.description.abstractDue to the environmental complexity created by physical and chemical gradients, transitional biomes host a large biological diversity. There has been some effort to better understand the diversity of diatoms living in these transitional environments, although many diatom species remain undescribed from these habitats. Gathering this knowledge will significantly improve our ability to halt biodiversity loss due to anthropogenic activities and assess individual water bodies' ecological status. More detailed studies on diatoms from transitional environments will also further enhance the research that uses them as proxies to reconstruct past environmental changes. The current research documents a new diatom species from the genus Tetramphora, found on the saltmarshes of the Arade River Estuary (Southern Portugal), and its autecology. As with the other twelve recognised species of the genus, Tetramphora witkowskii sp. nov. presents an asymmetrical valve outline, a biarcuate raphe system, slit like areolae, axial costae, a central hyaline area, and a dorsal central thickening. Tetramphora witkowskii sp. nov. is characterised by having finely silicified valves with a nearly flat face, 28.0-33.0 mu m in length and 6.0-6.5 mu m in width. The new species has a stria density of 24-27 in 10 mu m with narrow, longitudinally oriented areola openings. It presents proximal raphe endings covered by a projected dorsal-side flap and a developed sternum with thickened costae, weakly formed on the dorsal side of the central area. Tetramphora witkowskii sp. nov. was found as a benthic epipelic diatom with a preference for brackish to salt water with circumneutral pH. Further research is required to better understand this species' colony and frustule shape, the number, morphology, and position of the chloroplasts, genetic signature, geographical distribution, and environmental tolerance.eng
dc.description.sponsorshipCEECINST/00146/2018/CP1493/CT0002
dc.identifier.doi10.1127/nova_hedwigia/2025/1062
dc.identifier.issn0029-5035
dc.identifier.urihttp://hdl.handle.net/10400.1/27353
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSchweizerbart Science Publishers
dc.relationHOLOCENE ENVIRONMENTAL CHANGES ON THE ALGARVE COAST: A DIATOM-BASED STUDY
dc.relationInterdisciplinary Center for Archaeology and Evolution of Human Behavior
dc.relation.ispartofNova Hedwigia
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.subjectSaltmarsh
dc.subjectBrackish water
dc.subjectSalt water
dc.subjectTetramophora
dc.titleA new diatom species from a transitional environment (Arade river estuary, Portugal): Tetramphora witkowskii sp. nov.eng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleHOLOCENE ENVIRONMENTAL CHANGES ON THE ALGARVE COAST: A DIATOM-BASED STUDY
oaire.awardTitleInterdisciplinary Center for Archaeology and Evolution of Human Behavior
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/FARH/SFRH%2FBD%2F62405%2F2009/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04211%2F2020/PT
oaire.citation.titleNova Hedwigia
oaire.fundingStreamFARH
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameGomes
person.familyNameBoski
person.familyNameMoura
person.givenNameAna
person.givenNameTomasz
person.givenNameDelminda
person.identifier.ciencia-id1416-B317-51D1
person.identifier.orcid0000-0002-2014-7830
person.identifier.orcid0000-0003-2462-4179
person.identifier.orcid0000-0002-0952-6805
person.identifier.scopus-author-id6602267486
person.identifier.scopus-author-id15048413000
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
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