Temporal changes in biological traits of diatom communities in response to an oil spill in a subtropical river
Abstract: Diatom growth strategies, which are used as a proxy to analyze disturbances and environmental impacts, can also provide reliable information about environmental gradients. In this study, we used diatom communities and biological traits to assess the structure of epilithic diatoms after an...
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| Format: | Article |
| Language: | English |
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Academia Brasileira de Ciências
2019-05-01
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| Series: | Anais da Academia Brasileira de Ciências |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300609&lng=en&tlng=en |
| _version_ | 1818519427989110784 |
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| author | DENISE M. DE FARIA JÚLIO C. COSTIN PRISCILA I. TREMARIN THELMA A.V. LUDWIG |
| author_facet | DENISE M. DE FARIA JÚLIO C. COSTIN PRISCILA I. TREMARIN THELMA A.V. LUDWIG |
| author_sort | DENISE M. DE FARIA |
| collection | DOAJ |
| description | Abstract: Diatom growth strategies, which are used as a proxy to analyze disturbances and environmental impacts, can also provide reliable information about environmental gradients. In this study, we used diatom communities and biological traits to assess the structure of epilithic diatoms after an oil spill in a large tributary of the Iguaçu River (Paraná, Brazil). Epilithon and water samples were taken on July 12th, 2004, and after an unexpected oil spill, on the following days: 09/19, 10/03, and 10/13/2004. We observed that the spill caused a distinct shift in both diatom composition and guild group. Diversity decreased and pollution-tolerant diatoms of the motile group became dominant in response to the elevated nutrient levels and reduced light. Tube-forming diatoms, which are strong competitors for light, dominated the epilithon 24 days after the oil spill. Both diatom guilds and growth forms were successfully used to predict the environmental conditions. While diatom guilds responded to disturbances along a temporal gradient, changes inside the guilds were the main factor for understanding the environmental gradient. |
| first_indexed | 2024-12-11T01:24:06Z |
| format | Article |
| id | doaj.art-d2e5e45c29ac47db9477393b090b0ba7 |
| institution | Directory Open Access Journal |
| issn | 1678-2690 |
| language | English |
| last_indexed | 2024-12-11T01:24:06Z |
| publishDate | 2019-05-01 |
| publisher | Academia Brasileira de Ciências |
| record_format | Article |
| series | Anais da Academia Brasileira de Ciências |
| spelling | doaj.art-d2e5e45c29ac47db9477393b090b0ba72022-12-22T01:25:37ZengAcademia Brasileira de CiênciasAnais da Academia Brasileira de Ciências1678-26902019-05-0191210.1590/0001-3765201920170863S0001-37652019000300609Temporal changes in biological traits of diatom communities in response to an oil spill in a subtropical riverDENISE M. DE FARIAJÚLIO C. COSTINPRISCILA I. TREMARINTHELMA A.V. LUDWIGAbstract: Diatom growth strategies, which are used as a proxy to analyze disturbances and environmental impacts, can also provide reliable information about environmental gradients. In this study, we used diatom communities and biological traits to assess the structure of epilithic diatoms after an oil spill in a large tributary of the Iguaçu River (Paraná, Brazil). Epilithon and water samples were taken on July 12th, 2004, and after an unexpected oil spill, on the following days: 09/19, 10/03, and 10/13/2004. We observed that the spill caused a distinct shift in both diatom composition and guild group. Diversity decreased and pollution-tolerant diatoms of the motile group became dominant in response to the elevated nutrient levels and reduced light. Tube-forming diatoms, which are strong competitors for light, dominated the epilithon 24 days after the oil spill. Both diatom guilds and growth forms were successfully used to predict the environmental conditions. While diatom guilds responded to disturbances along a temporal gradient, changes inside the guilds were the main factor for understanding the environmental gradient.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300609&lng=en&tlng=endiatom guildsdisturbancediversityepilithongrowth forms |
| spellingShingle | DENISE M. DE FARIA JÚLIO C. COSTIN PRISCILA I. TREMARIN THELMA A.V. LUDWIG Temporal changes in biological traits of diatom communities in response to an oil spill in a subtropical river Anais da Academia Brasileira de Ciências diatom guilds disturbance diversity epilithon growth forms |
| title | Temporal changes in biological traits of diatom communities in response to an oil spill in a subtropical river |
| title_full | Temporal changes in biological traits of diatom communities in response to an oil spill in a subtropical river |
| title_fullStr | Temporal changes in biological traits of diatom communities in response to an oil spill in a subtropical river |
| title_full_unstemmed | Temporal changes in biological traits of diatom communities in response to an oil spill in a subtropical river |
| title_short | Temporal changes in biological traits of diatom communities in response to an oil spill in a subtropical river |
| title_sort | temporal changes in biological traits of diatom communities in response to an oil spill in a subtropical river |
| topic | diatom guilds disturbance diversity epilithon growth forms |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300609&lng=en&tlng=en |
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