Mat thickness associated with Didymosphenia geminata and Cymbella spp. in the southern rivers of Chile
Didymosphenia geminata is a diatom that can alter aquatic systems. Several investigations have shown as chemical, and hydraulic factors have a great influence on the proliferation of D. geminata, but the study of other microalgae that could be associated with it has been poorly addressed. The object...
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PeerJ Inc.
2019-02-01
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| Online Access: | https://peerj.com/articles/6481.pdf |
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| author | Daniel Zamorano Matías Peredo-Parada Diana J. Lillo Jorge Parodi Carolina A. Díaz |
| author_facet | Daniel Zamorano Matías Peredo-Parada Diana J. Lillo Jorge Parodi Carolina A. Díaz |
| author_sort | Daniel Zamorano |
| collection | DOAJ |
| description | Didymosphenia geminata is a diatom that can alter aquatic systems. Several investigations have shown as chemical, and hydraulic factors have a great influence on the proliferation of D. geminata, but the study of other microalgae that could be associated with it has been poorly addressed. The objective of this study is to evaluate the relationship between mat thickness, D. geminata and another taxon that produces mucilage, Cymbella, while also considering physical and chemical factors. For this, two samples were taken, one in the spring of 2013 and the other in the autumn of 2014, from eight rivers in central-southern Chile-South America, where the benthic community was characterized, and the thickness of the mat was measured. The results show that the mat thickness on sites with the presence of both taxa is doubled, and while sites with D. geminata presence showed mat peak on autumn, sites with Cymbella spp. presence showed on spring. Also, higher values of mat thickness associated with low cell densities of D. geminata and intermediate cell densities of Cymbella spp. Finally, physicochemical variables that better explain mat thickness are phosphorus and water temperature. An alternation process of mucilage production may explain these results by these taxa strongly related to physicochemical variables. The present study contributes evidence about the relationship between mat thickness D. geminata and other microalgae contribution, and aquatic condition for this development. |
| first_indexed | 2024-03-09T08:00:34Z |
| format | Article |
| id | doaj.art-68ae09af7eee4f97bcdfecc3200d8a84 |
| institution | Directory Open Access Journal |
| issn | 2167-8359 |
| language | English |
| last_indexed | 2024-03-09T08:00:34Z |
| publishDate | 2019-02-01 |
| publisher | PeerJ Inc. |
| record_format | Article |
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| spelling | doaj.art-68ae09af7eee4f97bcdfecc3200d8a842023-12-03T00:47:43ZengPeerJ Inc.PeerJ2167-83592019-02-017e648110.7717/peerj.6481Mat thickness associated with Didymosphenia geminata and Cymbella spp. in the southern rivers of ChileDaniel Zamorano0Matías Peredo-Parada1Diana J. Lillo2Jorge Parodi3Carolina A. Díaz4Centro de Investigación e Innovación para el Cambio Climático (CiiCC), Universidad Santo Tomás, Santiago, ChilePlataforma de Investigación en Ecohidrología y Ecohidráulica (Ecohyd), Santiago, ChileAgencia de Comunicación Científica Hēure˜ka, Santiago, ChileLaboratorio de Biología Celular y Molecular aplicada, Vicerrectoría de Investigación y Postgrado, Universidad Mayor, Temuco, ChileAmakaik Consultoría Ambiental, Santiago, ChileDidymosphenia geminata is a diatom that can alter aquatic systems. Several investigations have shown as chemical, and hydraulic factors have a great influence on the proliferation of D. geminata, but the study of other microalgae that could be associated with it has been poorly addressed. The objective of this study is to evaluate the relationship between mat thickness, D. geminata and another taxon that produces mucilage, Cymbella, while also considering physical and chemical factors. For this, two samples were taken, one in the spring of 2013 and the other in the autumn of 2014, from eight rivers in central-southern Chile-South America, where the benthic community was characterized, and the thickness of the mat was measured. The results show that the mat thickness on sites with the presence of both taxa is doubled, and while sites with D. geminata presence showed mat peak on autumn, sites with Cymbella spp. presence showed on spring. Also, higher values of mat thickness associated with low cell densities of D. geminata and intermediate cell densities of Cymbella spp. Finally, physicochemical variables that better explain mat thickness are phosphorus and water temperature. An alternation process of mucilage production may explain these results by these taxa strongly related to physicochemical variables. The present study contributes evidence about the relationship between mat thickness D. geminata and other microalgae contribution, and aquatic condition for this development.https://peerj.com/articles/6481.pdfNuisance diatomsMicroalgaeStalkMucilage tubes |
| spellingShingle | Daniel Zamorano Matías Peredo-Parada Diana J. Lillo Jorge Parodi Carolina A. Díaz Mat thickness associated with Didymosphenia geminata and Cymbella spp. in the southern rivers of Chile PeerJ Nuisance diatoms Microalgae Stalk Mucilage tubes |
| title | Mat thickness associated with Didymosphenia geminata and Cymbella spp. in the southern rivers of Chile |
| title_full | Mat thickness associated with Didymosphenia geminata and Cymbella spp. in the southern rivers of Chile |
| title_fullStr | Mat thickness associated with Didymosphenia geminata and Cymbella spp. in the southern rivers of Chile |
| title_full_unstemmed | Mat thickness associated with Didymosphenia geminata and Cymbella spp. in the southern rivers of Chile |
| title_short | Mat thickness associated with Didymosphenia geminata and Cymbella spp. in the southern rivers of Chile |
| title_sort | mat thickness associated with didymosphenia geminata and cymbella spp in the southern rivers of chile |
| topic | Nuisance diatoms Microalgae Stalk Mucilage tubes |
| url | https://peerj.com/articles/6481.pdf |
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