Assessment of temporal and spatial eutrophication index in a water dam reservoir
Eutrophication is considered as a serious problem in water reservoirs. Awareness about the eutrophic status of each reservoir could help in providing a better understanding of the problem in a global scale. The present study was conducted to assess temporal and spatial eutrophication index in a wate...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
GJESM Publisher
2018-04-01
|
| Series: | Global Journal of Environmental Science and Management |
| Subjects: | |
| Online Access: | http://www.gjesm.net/article_29719_b97b88a4589ae62e94ef133bd419758b.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832569827633397760 |
|---|---|
| author | F. Esfandi A.H. Mahvi M. Mosaferi F. Armanfar M. Hejazi S. Maleki |
| author_facet | F. Esfandi A.H. Mahvi M. Mosaferi F. Armanfar M. Hejazi S. Maleki |
| author_sort | F. Esfandi |
| collection | DOAJ |
| description | Eutrophication is considered as a serious problem in water reservoirs. Awareness about the eutrophic status of each reservoir could help in providing a better understanding of the problem in a global scale. The present study was conducted to assess temporal and spatial eutrophication index in a water reservoir (Sahand dam) in the northwest of Iran. Physico-chemical parametres that are effective on eutrphic condition occurrence were analyzed, and trophic state index was calculated on a scale of 0-100 by measuring Secchi disk depth, chlorophyll a, total phosphorus, total nitrogen, total suspended solids, and phosphorus P/N ratio. Moreover, using the overlapping, the reservoir was mapped based on the mentioned index. Seasonal variation of dissolved solids in the reservoir was recorded due to precipitation and subsequent dilution and evaporation. Thermal stratification was observed during the summer months. The total trophic state index value was calculated as 55.5- 58.07, with minimum value belonging to P/N and maximum value belonging to suspended solids for individual parameters. There were some spatial and temporal differences for trophic state index in the reservoir. It was found that the whole area of the reservoir was in almost moderately upper-mesotrophic condition and in some target stations it was very close to eutrophic condition. The worst condition was observed in Qaranqu River as the main input to the reservoir. Due to the significant impact of suspended particles resulting from erosion of the surrounding lands on TSI value, there is an urgent need for mitigation measures to intercept eutrophication. |
| format | Article |
| id | doaj-art-c629cf1d75a04f939c8b88f495a750d2 |
| institution | Kabale University |
| issn | 2383-3572 2383-3866 |
| language | English |
| publishDate | 2018-04-01 |
| publisher | GJESM Publisher |
| record_format | Article |
| series | Global Journal of Environmental Science and Management |
| spelling | doaj-art-c629cf1d75a04f939c8b88f495a750d22025-02-02T19:45:39ZengGJESM PublisherGlobal Journal of Environmental Science and Management2383-35722383-38662018-04-014215316610.22034/gjesm.2018.04.02.00429719Assessment of temporal and spatial eutrophication index in a water dam reservoirF. Esfandi0A.H. Mahvi1M. Mosaferi2F. Armanfar3M. Hejazi4S. Maleki5Department of Environmental Health Engineering, Tabriz University of Medical Sciences, Tabriz, IranCenter for Solid waste Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, IranHealth and Environment Research Center, Institute for Health Management, Tabriz University of Medical Sciences, Tabriz, IranEast Azerbaijan Regional Water Authority, Tabriz, IranAgricultural Biotechnology Research Institute of Iran, Tabriz, IranMedical Geography, Ministry of Health, Tehran, IranEutrophication is considered as a serious problem in water reservoirs. Awareness about the eutrophic status of each reservoir could help in providing a better understanding of the problem in a global scale. The present study was conducted to assess temporal and spatial eutrophication index in a water reservoir (Sahand dam) in the northwest of Iran. Physico-chemical parametres that are effective on eutrphic condition occurrence were analyzed, and trophic state index was calculated on a scale of 0-100 by measuring Secchi disk depth, chlorophyll a, total phosphorus, total nitrogen, total suspended solids, and phosphorus P/N ratio. Moreover, using the overlapping, the reservoir was mapped based on the mentioned index. Seasonal variation of dissolved solids in the reservoir was recorded due to precipitation and subsequent dilution and evaporation. Thermal stratification was observed during the summer months. The total trophic state index value was calculated as 55.5- 58.07, with minimum value belonging to P/N and maximum value belonging to suspended solids for individual parameters. There were some spatial and temporal differences for trophic state index in the reservoir. It was found that the whole area of the reservoir was in almost moderately upper-mesotrophic condition and in some target stations it was very close to eutrophic condition. The worst condition was observed in Qaranqu River as the main input to the reservoir. Due to the significant impact of suspended particles resulting from erosion of the surrounding lands on TSI value, there is an urgent need for mitigation measures to intercept eutrophication.http://www.gjesm.net/article_29719_b97b88a4589ae62e94ef133bd419758b.pdfEutrophicationNutrientsTrophic state indexWater qualityWater resource |
| spellingShingle | F. Esfandi A.H. Mahvi M. Mosaferi F. Armanfar M. Hejazi S. Maleki Assessment of temporal and spatial eutrophication index in a water dam reservoir Global Journal of Environmental Science and Management Eutrophication Nutrients Trophic state index Water quality Water resource |
| title | Assessment of temporal and spatial eutrophication index in a water dam reservoir |
| title_full | Assessment of temporal and spatial eutrophication index in a water dam reservoir |
| title_fullStr | Assessment of temporal and spatial eutrophication index in a water dam reservoir |
| title_full_unstemmed | Assessment of temporal and spatial eutrophication index in a water dam reservoir |
| title_short | Assessment of temporal and spatial eutrophication index in a water dam reservoir |
| title_sort | assessment of temporal and spatial eutrophication index in a water dam reservoir |
| topic | Eutrophication Nutrients Trophic state index Water quality Water resource |
| url | http://www.gjesm.net/article_29719_b97b88a4589ae62e94ef133bd419758b.pdf |
| work_keys_str_mv | AT fesfandi assessmentoftemporalandspatialeutrophicationindexinawaterdamreservoir AT ahmahvi assessmentoftemporalandspatialeutrophicationindexinawaterdamreservoir AT mmosaferi assessmentoftemporalandspatialeutrophicationindexinawaterdamreservoir AT farmanfar assessmentoftemporalandspatialeutrophicationindexinawaterdamreservoir AT mhejazi assessmentoftemporalandspatialeutrophicationindexinawaterdamreservoir AT smaleki assessmentoftemporalandspatialeutrophicationindexinawaterdamreservoir |