Seven Epithemia taxa (Bacillariophyta) from Lake Akan (Japan) and their salinity tolerances
The ecologies (salinity tolerance) of many diatoms are largely unknown, despite their potential to contribute to more detailed paleoenvironmental reconstructions. This study therefore aimed to investigate the relationship between diatom species and salinity. We cultured seven cosmopolitan benthic di...
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| Format: | Article |
| Language: | English |
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Pensoft Publishers
2023-07-01
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| Series: | PhytoKeys |
| Online Access: | https://phytokeys.pensoft.net/article/104449/download/pdf/ |
| _version_ | 1797776615060537344 |
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| author | Takashi Chiba Yoshifumi Horie Akihiro Tuji |
| author_facet | Takashi Chiba Yoshifumi Horie Akihiro Tuji |
| author_sort | Takashi Chiba |
| collection | DOAJ |
| description | The ecologies (salinity tolerance) of many diatoms are largely unknown, despite their potential to contribute to more detailed paleoenvironmental reconstructions. This study therefore aimed to investigate the relationship between diatom species and salinity. We cultured seven cosmopolitan benthic diatom species obtained from Lake Akan, a freshwater inland lake in Japan: Epithemia adnata, E. frickei, E. gibba, E. operculata, E. sorex, E. sp. and E. turgida. Each species was cultured at eleven salinities between 0‰ and 50‰. Epithemia adnata, E. frickei and E. sorex had the highest growth rate at a salinity of 3‰, with no further increase observed above 25‰. However, E. gibba had the highest growth rate at a salinity of 5‰, with no increase at salinities ≥ 30‰. These results suggest that E. adnata, E. frickei, E. gibba, and E. sorex grow in freshwater to brackish-water environments. Epithemia operculata and E. sp. proliferated at all salinities, indicating that they can adapt to hypersaline environments. However, E. turgida did not survive in salinities >10‰, making it the species with the narrowest salinity tolerance range. These results provide new knowledge that improves the understanding of the ecology of these species in modern environments and offer insights into paleoenvironmental reconstructions through diatom analysis. |
| first_indexed | 2024-03-12T22:52:19Z |
| format | Article |
| id | doaj.art-b3e7e0ac76fb47e2be0678f5dd2f890b |
| institution | Directory Open Access Journal |
| issn | 1314-2003 |
| language | English |
| last_indexed | 2024-03-12T22:52:19Z |
| publishDate | 2023-07-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | PhytoKeys |
| spelling | doaj.art-b3e7e0ac76fb47e2be0678f5dd2f890b2023-07-20T08:11:05ZengPensoft PublishersPhytoKeys1314-20032023-07-0122913915510.3897/phytokeys.229.104449104449Seven Epithemia taxa (Bacillariophyta) from Lake Akan (Japan) and their salinity tolerancesTakashi Chiba0Yoshifumi Horie1Akihiro Tuji2Rakuno Gakuen UniversityKobe UniversityDepartment of Botany, National Museum of Nature and ScienceThe ecologies (salinity tolerance) of many diatoms are largely unknown, despite their potential to contribute to more detailed paleoenvironmental reconstructions. This study therefore aimed to investigate the relationship between diatom species and salinity. We cultured seven cosmopolitan benthic diatom species obtained from Lake Akan, a freshwater inland lake in Japan: Epithemia adnata, E. frickei, E. gibba, E. operculata, E. sorex, E. sp. and E. turgida. Each species was cultured at eleven salinities between 0‰ and 50‰. Epithemia adnata, E. frickei and E. sorex had the highest growth rate at a salinity of 3‰, with no further increase observed above 25‰. However, E. gibba had the highest growth rate at a salinity of 5‰, with no increase at salinities ≥ 30‰. These results suggest that E. adnata, E. frickei, E. gibba, and E. sorex grow in freshwater to brackish-water environments. Epithemia operculata and E. sp. proliferated at all salinities, indicating that they can adapt to hypersaline environments. However, E. turgida did not survive in salinities >10‰, making it the species with the narrowest salinity tolerance range. These results provide new knowledge that improves the understanding of the ecology of these species in modern environments and offer insights into paleoenvironmental reconstructions through diatom analysis.https://phytokeys.pensoft.net/article/104449/download/pdf/ |
| spellingShingle | Takashi Chiba Yoshifumi Horie Akihiro Tuji Seven Epithemia taxa (Bacillariophyta) from Lake Akan (Japan) and their salinity tolerances PhytoKeys |
| title | Seven Epithemia taxa (Bacillariophyta) from Lake Akan (Japan) and their salinity tolerances |
| title_full | Seven Epithemia taxa (Bacillariophyta) from Lake Akan (Japan) and their salinity tolerances |
| title_fullStr | Seven Epithemia taxa (Bacillariophyta) from Lake Akan (Japan) and their salinity tolerances |
| title_full_unstemmed | Seven Epithemia taxa (Bacillariophyta) from Lake Akan (Japan) and their salinity tolerances |
| title_short | Seven Epithemia taxa (Bacillariophyta) from Lake Akan (Japan) and their salinity tolerances |
| title_sort | seven epithemia taxa bacillariophyta from lake akan japan and their salinity tolerances |
| url | https://phytokeys.pensoft.net/article/104449/download/pdf/ |
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