Changes in the physicochemical and biological characteristics in the lentic and lotic waters of the Nile river
This study aims to compare the changes in the physicochemical and biological characteristics simultaneously in Nasser Lake as lentic water and the main Nile River as lotic water due to the construction of the Aswan High Dam. Therefore, water samples were seasonally collected from four sites along th...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-03-01
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| Series: | Egyptian Journal of Aquatic Research |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1687428520301102 |
| _version_ | 1819204199439663104 |
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| author | Talaat A. Salem |
| author_facet | Talaat A. Salem |
| author_sort | Talaat A. Salem |
| collection | DOAJ |
| description | This study aims to compare the changes in the physicochemical and biological characteristics simultaneously in Nasser Lake as lentic water and the main Nile River as lotic water due to the construction of the Aswan High Dam. Therefore, water samples were seasonally collected from four sites along the lentic water and five sites along the lotic water. The results showed an increase in the water temperature and pH in the lentic than the lotic waters, while TSS, nutrients, BOD, and TDS showed a reverse trend. Furthermore, zooplankton recorded 45 taxa; 31 rotifers, 7 cladocerans, and 3 copepods, in addition to 4 taxa represented in rare groups. Rotifera dominated the main river water, while Copepoda dominated Nasser Lake water. Twenty-two holozooplankters appeared only in the main river water, while three holozooplankters appeared in the lake water and 20 holozooplankters were shared in both waterbodies. The appearance of Ptygura libera in the river for the first time proved that the lake is the source of some zooplankters in the river. According to the trophic state index and the river pollution index calculations, the two waterbodies categorized as eutrophic and unpolluted, respectively. |
| first_indexed | 2024-12-23T04:32:01Z |
| format | Article |
| id | doaj.art-fd4da662090f41e49e1382bc90b5fcc6 |
| institution | Directory Open Access Journal |
| issn | 1687-4285 |
| language | English |
| last_indexed | 2024-12-23T04:32:01Z |
| publishDate | 2021-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Egyptian Journal of Aquatic Research |
| spelling | doaj.art-fd4da662090f41e49e1382bc90b5fcc62022-12-21T17:59:59ZengElsevierEgyptian Journal of Aquatic Research1687-42852021-03-014712127Changes in the physicochemical and biological characteristics in the lentic and lotic waters of the Nile riverTalaat A. Salem0Nile Research Institute, National Water Research Center, El-Qanater El-Khairiya 13621, EgyptThis study aims to compare the changes in the physicochemical and biological characteristics simultaneously in Nasser Lake as lentic water and the main Nile River as lotic water due to the construction of the Aswan High Dam. Therefore, water samples were seasonally collected from four sites along the lentic water and five sites along the lotic water. The results showed an increase in the water temperature and pH in the lentic than the lotic waters, while TSS, nutrients, BOD, and TDS showed a reverse trend. Furthermore, zooplankton recorded 45 taxa; 31 rotifers, 7 cladocerans, and 3 copepods, in addition to 4 taxa represented in rare groups. Rotifera dominated the main river water, while Copepoda dominated Nasser Lake water. Twenty-two holozooplankters appeared only in the main river water, while three holozooplankters appeared in the lake water and 20 holozooplankters were shared in both waterbodies. The appearance of Ptygura libera in the river for the first time proved that the lake is the source of some zooplankters in the river. According to the trophic state index and the river pollution index calculations, the two waterbodies categorized as eutrophic and unpolluted, respectively.http://www.sciencedirect.com/science/article/pii/S1687428520301102ZooplanktonNasser LakeTrophic state indexRiver pollution index |
| spellingShingle | Talaat A. Salem Changes in the physicochemical and biological characteristics in the lentic and lotic waters of the Nile river Egyptian Journal of Aquatic Research Zooplankton Nasser Lake Trophic state index River pollution index |
| title | Changes in the physicochemical and biological characteristics in the lentic and lotic waters of the Nile river |
| title_full | Changes in the physicochemical and biological characteristics in the lentic and lotic waters of the Nile river |
| title_fullStr | Changes in the physicochemical and biological characteristics in the lentic and lotic waters of the Nile river |
| title_full_unstemmed | Changes in the physicochemical and biological characteristics in the lentic and lotic waters of the Nile river |
| title_short | Changes in the physicochemical and biological characteristics in the lentic and lotic waters of the Nile river |
| title_sort | changes in the physicochemical and biological characteristics in the lentic and lotic waters of the nile river |
| topic | Zooplankton Nasser Lake Trophic state index River pollution index |
| url | http://www.sciencedirect.com/science/article/pii/S1687428520301102 |
| work_keys_str_mv | AT talaatasalem changesinthephysicochemicalandbiologicalcharacteristicsinthelenticandloticwatersofthenileriver |