<b>Preliminary analysis on the use of Trophic State Indexes in a brazilian semiarid reservoir
The Carlson’s (1977) Trophic State Index (TSI) is a widely employed tool to estimate the degree of eutrophication in a reservoir. In Brazil, the need of a classification system that would take into account regional characteristics employed adjusted indexes generated by data from reservoirs in the so...
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Maringá
2015-07-01
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| Series: | Acta Scientiarum: Biological Sciences |
| Subjects: | |
| Online Access: | https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27160 |
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| author | Paulo de Freitas Lima Mart Som Reis Sousa André Ferreira Porfírio Beatriz Soares Almeida Rogério Herlon Furtado Freire Sandra Tédde Santaella |
| author_facet | Paulo de Freitas Lima Mart Som Reis Sousa André Ferreira Porfírio Beatriz Soares Almeida Rogério Herlon Furtado Freire Sandra Tédde Santaella |
| author_sort | Paulo de Freitas Lima |
| collection | DOAJ |
| description | The Carlson’s (1977) Trophic State Index (TSI) is a widely employed tool to estimate the degree of eutrophication in a reservoir. In Brazil, the need of a classification system that would take into account regional characteristics employed adjusted indexes generated by data from reservoirs in the southeastern region of the country. Current research compares responses for Carlson’s TSI (1977) and its derivations for Brazilian reservoirs from data collected in the Pereira de Miranda Reservoir (State of Ceará, Brazil), and analyzes the influence of local conditions on results and their applicability to reservoirs in the semiarid region. TSIs were calculated by data on total phosphorus, chlorophyll a and water transparency. The reservoir was estimated as mesotrophic based on the chlorophyll a variable, and between eutrophic and hyper-eutrophic when based on total phosphorus data and water transparency. Results showed the need to consider intrinsic factors in the discussion on the applicability of TSIs to reservoirs in the semiarid region since the peculiar hydro-climatic conditions and morphometric characteristics make them even more vulnerable to disturbance agents, such as winds which have a significant influence on processes that determine the trophic state.
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| first_indexed | 2024-04-12T10:10:57Z |
| format | Article |
| id | doaj.art-45c0291577874121bb4ad3e8ac404518 |
| institution | Directory Open Access Journal |
| issn | 1679-9283 1807-863X |
| language | English |
| last_indexed | 2024-04-12T10:10:57Z |
| publishDate | 2015-07-01 |
| publisher | Universidade Estadual de Maringá |
| record_format | Article |
| series | Acta Scientiarum: Biological Sciences |
| spelling | doaj.art-45c0291577874121bb4ad3e8ac4045182022-12-22T03:37:19ZengUniversidade Estadual de MaringáActa Scientiarum: Biological Sciences1679-92831807-863X2015-07-0137310.4025/actascibiolsci.v37i3.2716012730<b>Preliminary analysis on the use of Trophic State Indexes in a brazilian semiarid reservoirPaulo de Freitas Lima0Mart Som Reis Sousa1André Ferreira Porfírio2Beatriz Soares Almeida3Rogério Herlon Furtado Freire4Sandra Tédde Santaella5Universidade Federal do CearáUniversidade Federal do CearáUniversidade Federal do CearáUniversidade Federal do CearáFundação Parque Tecnológico de itaipuUniversidade Federal do CearáThe Carlson’s (1977) Trophic State Index (TSI) is a widely employed tool to estimate the degree of eutrophication in a reservoir. In Brazil, the need of a classification system that would take into account regional characteristics employed adjusted indexes generated by data from reservoirs in the southeastern region of the country. Current research compares responses for Carlson’s TSI (1977) and its derivations for Brazilian reservoirs from data collected in the Pereira de Miranda Reservoir (State of Ceará, Brazil), and analyzes the influence of local conditions on results and their applicability to reservoirs in the semiarid region. TSIs were calculated by data on total phosphorus, chlorophyll a and water transparency. The reservoir was estimated as mesotrophic based on the chlorophyll a variable, and between eutrophic and hyper-eutrophic when based on total phosphorus data and water transparency. Results showed the need to consider intrinsic factors in the discussion on the applicability of TSIs to reservoirs in the semiarid region since the peculiar hydro-climatic conditions and morphometric characteristics make them even more vulnerable to disturbance agents, such as winds which have a significant influence on processes that determine the trophic state. https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27160hydro-climatic conditionseutrophicationlimiting nutrientphosphorusnitrogenchlorophyll a |
| spellingShingle | Paulo de Freitas Lima Mart Som Reis Sousa André Ferreira Porfírio Beatriz Soares Almeida Rogério Herlon Furtado Freire Sandra Tédde Santaella <b>Preliminary analysis on the use of Trophic State Indexes in a brazilian semiarid reservoir Acta Scientiarum: Biological Sciences hydro-climatic conditions eutrophication limiting nutrient phosphorus nitrogen chlorophyll a |
| title | <b>Preliminary analysis on the use of Trophic State Indexes in a brazilian semiarid reservoir |
| title_full | <b>Preliminary analysis on the use of Trophic State Indexes in a brazilian semiarid reservoir |
| title_fullStr | <b>Preliminary analysis on the use of Trophic State Indexes in a brazilian semiarid reservoir |
| title_full_unstemmed | <b>Preliminary analysis on the use of Trophic State Indexes in a brazilian semiarid reservoir |
| title_short | <b>Preliminary analysis on the use of Trophic State Indexes in a brazilian semiarid reservoir |
| title_sort | b preliminary analysis on the use of trophic state indexes in a brazilian semiarid reservoir |
| topic | hydro-climatic conditions eutrophication limiting nutrient phosphorus nitrogen chlorophyll a |
| url | https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27160 |
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