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dc.creatorMacingo S.C., Kormas K.A., Oikonomou A., Karayanni H.en
dc.date.accessioned2023-01-31T08:55:37Z
dc.date.available2023-01-31T08:55:37Z
dc.date.issued2019
dc.identifier10.1093/plankt/fbz066
dc.identifier.issn01427873
dc.identifier.urihttp://hdl.handle.net/11615/76055
dc.description.abstractUnicellular eukaryotes have pivotal ecological roles in aquatic ecosystems by participating in biogeochemical processes and structuring microbial food webs. However, revealing their biogeographical patterns remains challenging, as it is reflected in the rather limited available knowledge. In this study, two central patterns, the taxa-area and the distance-decay relationships, were tested for freshwater unicellular eukaryotes. Sampling was performed in 31 mountainous freshwater ecosystems in Thessaly (Greece). Sampling sites had different geohydromorphological characteristics (altitude, 124-704 m; depth, 0.3-1 m; surface area, 188-123 000 m2; geographical distances, 0.03-48.4 km). Unicellular eukaryote diversity was assessed by 18S rRNA gene diversity with high-throughput sequencing. Five supergroups (Stramenopiles, Alveolata, Rhizaria, Archaeplastida and Opisthokonta) were found with the most abundant taxa being Stramenopiles and Alveolata. Aquatic unicellular eukaryotes showed statistically significant but weak DDR and TAR. This can be attributed to the large proportion of specialists (91.9% of operational taxonomic units according to Levin's index). These results indicate that although mountainous pools and ponds can host high diversity of unicellular eukaryotes, the shaping of their communities is mainly regulated by niche-specific processes and environmental filtering and to a lesser extent by species dispersion processes. © 2019 The Author(s) 2019. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.en
dc.language.isoenen
dc.sourceJournal of Plankton Researchen
dc.source.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85082109616&doi=10.1093%2fplankt%2ffbz066&partnerID=40&md5=cc71b21f0a0da602e2c4306ef941e7da
dc.subjectbiogeographyen
dc.subjectdispersionen
dc.subjectDNAen
dc.subjectephemeral poolen
dc.subjecteukaryoteen
dc.subjectfreshwater ecosystemen
dc.subjectgeneen
dc.subjectgenetic analysisen
dc.subjecttaxonomyen
dc.subjectGreeceen
dc.subjectThessalyen
dc.subjectAlveolataen
dc.subjectArchaeplastidaen
dc.subjectFungi/Metazoa groupen
dc.subjectProtistaen
dc.subjectRhizariaen
dc.subjectstramenopilesen
dc.subjectOxford University Pressen
dc.titleTaxa-area and distance-decay relationships of unicellular eukaryotes along an elevation gradient of mountainous freshwater ecosystemsen
dc.typejournalArticleen


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