A multivariate assessment of the trophic state of a man-made reservoir in North Tunisia
In the present work, we attempt to test the applicability of common trophic state indices such as Carlson’s index (1977), probability distribution diagrams of Vollenweider (1982), and fixed boundary systems of the OECD (1982) and of Nurnberg (1996) for evaluating the risk of eutrophication in the Se...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2013-12-01
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| Series: | Limnological Review |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/limre-2013-0026 |
| _version_ | 1797225191189774336 |
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| author | Aloui Besma Zouabi Gueddari Moncef |
| author_facet | Aloui Besma Zouabi Gueddari Moncef |
| author_sort | Aloui Besma Zouabi |
| collection | DOAJ |
| description | In the present work, we attempt to test the applicability of common trophic state indices such as Carlson’s index (1977), probability distribution diagrams of Vollenweider (1982), and fixed boundary systems of the OECD (1982) and of Nurnberg (1996) for evaluating the risk of eutrophication in the Sejnane reservoir in North Tunisia. The environmental parameters considered include monthly values of nutrients, chlorophyll a, Secchi transparency, turbidity and dissolved oxygen over a decade of monitoring from November 2001 through October 2011. To compile data and to identify key aspects of water quality, a multivariate technique as Principal Component Analysis was performed. Results show that productivity is limited by sedimentary turbidity, which contributes to decreasing water clarity and promotes the adsorption of phosphorus to suspended matter that decreases, indirectly, the bioavailability of nutrients. The Nurnberg model provides an accurate assessment of eutrophication with a clear internal coherence between self-indicators, and appears to be the most suitable way to evaluate eutrophication risk in the reservoir. |
| first_indexed | 2024-03-08T06:37:58Z |
| format | Article |
| id | doaj.art-1ce8bc32be1b4613a3703794675fc9dc |
| institution | Directory Open Access Journal |
| issn | 2300-7575 |
| language | English |
| last_indexed | 2024-04-24T14:05:05Z |
| publishDate | 2013-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Limnological Review |
| spelling | doaj.art-1ce8bc32be1b4613a3703794675fc9dc2024-04-03T10:37:28ZengMDPI AGLimnological Review2300-75752013-12-0113422924010.2478/limre-2013-0026A multivariate assessment of the trophic state of a man-made reservoir in North TunisiaAloui Besma Zouabi0Gueddari MoncefLaboratory of Geochemistry and Environmental Geology, Department of Geology, Faculty of Sciences, University of Tunis el Manar, 2092. Tunis, TunisiaIn the present work, we attempt to test the applicability of common trophic state indices such as Carlson’s index (1977), probability distribution diagrams of Vollenweider (1982), and fixed boundary systems of the OECD (1982) and of Nurnberg (1996) for evaluating the risk of eutrophication in the Sejnane reservoir in North Tunisia. The environmental parameters considered include monthly values of nutrients, chlorophyll a, Secchi transparency, turbidity and dissolved oxygen over a decade of monitoring from November 2001 through October 2011. To compile data and to identify key aspects of water quality, a multivariate technique as Principal Component Analysis was performed. Results show that productivity is limited by sedimentary turbidity, which contributes to decreasing water clarity and promotes the adsorption of phosphorus to suspended matter that decreases, indirectly, the bioavailability of nutrients. The Nurnberg model provides an accurate assessment of eutrophication with a clear internal coherence between self-indicators, and appears to be the most suitable way to evaluate eutrophication risk in the reservoir.https://doi.org/10.2478/limre-2013-0026trophic statewater qualitymultivariate assessmentsejnane reservoirtunisia |
| spellingShingle | Aloui Besma Zouabi Gueddari Moncef A multivariate assessment of the trophic state of a man-made reservoir in North Tunisia Limnological Review trophic state water quality multivariate assessment sejnane reservoir tunisia |
| title | A multivariate assessment of the trophic state of a man-made reservoir in North Tunisia |
| title_full | A multivariate assessment of the trophic state of a man-made reservoir in North Tunisia |
| title_fullStr | A multivariate assessment of the trophic state of a man-made reservoir in North Tunisia |
| title_full_unstemmed | A multivariate assessment of the trophic state of a man-made reservoir in North Tunisia |
| title_short | A multivariate assessment of the trophic state of a man-made reservoir in North Tunisia |
| title_sort | multivariate assessment of the trophic state of a man made reservoir in north tunisia |
| topic | trophic state water quality multivariate assessment sejnane reservoir tunisia |
| url | https://doi.org/10.2478/limre-2013-0026 |
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