| Registro completo |
| Provedor de dados: |
Biological Sciences
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| País: |
Brazil
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| Título: |
Preliminary analysis on the use of Trophic State Indexes in a brazilian semiarid reservoir
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| Autores: |
Lima, Paulo de Freitas
Sousa, Mart Som Reis
Porfírio, André Ferreira
Almeida, Beatriz Soares
Freire, Rogério Herlon Furtado
Santaella, Sandra Tédde
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| Data: |
2015-07-01
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| Ano: |
2015
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| Palavras-chave: |
Ciências biológicas
Ecologia (2.05.00.00-9) hydro-climatic conditions
Eutrophication
Limiting nutrient
Phosphorus
Nitrogen
Chlorophyll a Ecologia de ecossistemas (2.05.02.00-1)
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| Resumo: |
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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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27160
10.4025/actascibiolsci.v37i3.27160
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| Editor: |
Universidade Estadual De Maringá
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| Relação: |
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/27160/pdf_68
http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/downloadSuppFile/27160/9595
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| Formato: |
application/pdf
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| Fonte: |
Acta Scientiarum. Biological Sciences; v. 37, n. 3 (2015); 309-318
Acta Scientiarum. Biological Sciences; v. 37, n. 3 (2015); 309-318
1807-863X
1679-9283
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