SEASONAL VARIATION OF PHYTOPLANKTON FUNCTIONAL GROUPS IN TUYEN LAM RESERVOIR, CENTRAL HIGHLANDS, VIETNAM
Seasonal changes in freshwater phytoplankton assemblages at Tuyen Lam Reservoir in the Central Highlands of Vietnam were classified into 23 functional groups based on physiological, morphological, and ecological characteristics. A total of 168 species were recorded during 10 surveys from 2015 to 201...
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Dalat University
2022-10-01
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| Series: | Tạp chí Khoa học Đại học Đà Lạt |
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| Online Access: | https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/1023 |
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| author | Thi Hoang Yen Tran Thi Trang Le Doan Dang Phan Thanh Thai Tran Van Tu Nguyen Ngoc Lam Nguyen Thanh Luu Pham |
| author_facet | Thi Hoang Yen Tran Thi Trang Le Doan Dang Phan Thanh Thai Tran Van Tu Nguyen Ngoc Lam Nguyen Thanh Luu Pham |
| author_sort | Thi Hoang Yen Tran |
| collection | DOAJ |
| description | Seasonal changes in freshwater phytoplankton assemblages at Tuyen Lam Reservoir in the Central Highlands of Vietnam were classified into 23 functional groups based on physiological, morphological, and ecological characteristics. A total of 168 species were recorded during 10 surveys from 2015 to 2019 at 7 sampling sites, with Chlorophyta dominating in number of species. Phytoplankton abundance varied from 0.18×105 to 21.2×105 cells/L during the study period, mainly due to cyanobacteria. Seven of the 23 functional groups were considered to be dominant (relative density > 5%). The dominant functional groups were groups M and G in the dry season and groups M, G, P, and E in the rainy season. Group M (Microcystis aeruginosa) was the most common in both seasons, while group P (Closterium, Staurastrum, Aulacoseira), group E (Dinobryon, Synura), and group G (Sphaerocystis, Eudorina) were more common in the rainy season. The Shannon diversity index (H¢) showed that phytoplankton communities were relatively diverse and that most of the study sites were lightly polluted. However, the ecological status has deteriorated at some locations due to the overgrowth of group M, leading to eutrophication in this reservoir. This study highlights the usefulness of functional groups in the study of seasonal changes in phytoplankton dynamics. Functional groups are applied for the first time at Tuyen Lam Reservoir and can be used to predict early-stage cyanobacterial blooms in future studies. |
| format | Article |
| id | doaj-art-09fd272f530b404eb6e0ca399fa36ce8 |
| institution | Kabale University |
| issn | 0866-787X |
| language | English |
| publishDate | 2022-10-01 |
| publisher | Dalat University |
| record_format | Article |
| series | Tạp chí Khoa học Đại học Đà Lạt |
| spelling | doaj-art-09fd272f530b404eb6e0ca399fa36ce82025-02-02T23:31:54ZengDalat UniversityTạp chí Khoa học Đại học Đà Lạt0866-787X2022-10-01253510.37569/DalatUniversity.13.2.1023(2023)1078SEASONAL VARIATION OF PHYTOPLANKTON FUNCTIONAL GROUPS IN TUYEN LAM RESERVOIR, CENTRAL HIGHLANDS, VIETNAMThi Hoang Yen Tran0Thi Trang Le1Doan Dang Phan2Thanh Thai Tran3Van Tu Nguyen4Ngoc Lam Nguyen5Thanh Luu Pham6Institute of Tropical Biology, Vietnam Academy of Science and TechnologyInstitute of Tropical Biology, Vietnam Academy of Science and TechnologyInstitute of Tropical Biology, Vietnam Academy of Science and TechnologyInstitute of Tropical Biology, Vietnam Academy of Science and TechnologyInstitute of Tropical Biology, Vietnam Academy of Science and TechnologyInstitute of Oceanography, Vietnam Academy of Science and TechnologyInstitute of Tropical Biology, Vietnam Academy of Science and TechnologySeasonal changes in freshwater phytoplankton assemblages at Tuyen Lam Reservoir in the Central Highlands of Vietnam were classified into 23 functional groups based on physiological, morphological, and ecological characteristics. A total of 168 species were recorded during 10 surveys from 2015 to 2019 at 7 sampling sites, with Chlorophyta dominating in number of species. Phytoplankton abundance varied from 0.18×105 to 21.2×105 cells/L during the study period, mainly due to cyanobacteria. Seven of the 23 functional groups were considered to be dominant (relative density > 5%). The dominant functional groups were groups M and G in the dry season and groups M, G, P, and E in the rainy season. Group M (Microcystis aeruginosa) was the most common in both seasons, while group P (Closterium, Staurastrum, Aulacoseira), group E (Dinobryon, Synura), and group G (Sphaerocystis, Eudorina) were more common in the rainy season. The Shannon diversity index (H¢) showed that phytoplankton communities were relatively diverse and that most of the study sites were lightly polluted. However, the ecological status has deteriorated at some locations due to the overgrowth of group M, leading to eutrophication in this reservoir. This study highlights the usefulness of functional groups in the study of seasonal changes in phytoplankton dynamics. Functional groups are applied for the first time at Tuyen Lam Reservoir and can be used to predict early-stage cyanobacterial blooms in future studies.https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/1023central highlands reservoirfunctional groupsphytoplanktonseasonal changesshannon diversity index. |
| spellingShingle | Thi Hoang Yen Tran Thi Trang Le Doan Dang Phan Thanh Thai Tran Van Tu Nguyen Ngoc Lam Nguyen Thanh Luu Pham SEASONAL VARIATION OF PHYTOPLANKTON FUNCTIONAL GROUPS IN TUYEN LAM RESERVOIR, CENTRAL HIGHLANDS, VIETNAM Tạp chí Khoa học Đại học Đà Lạt central highlands reservoir functional groups phytoplankton seasonal changes shannon diversity index. |
| title | SEASONAL VARIATION OF PHYTOPLANKTON FUNCTIONAL GROUPS IN TUYEN LAM RESERVOIR, CENTRAL HIGHLANDS, VIETNAM |
| title_full | SEASONAL VARIATION OF PHYTOPLANKTON FUNCTIONAL GROUPS IN TUYEN LAM RESERVOIR, CENTRAL HIGHLANDS, VIETNAM |
| title_fullStr | SEASONAL VARIATION OF PHYTOPLANKTON FUNCTIONAL GROUPS IN TUYEN LAM RESERVOIR, CENTRAL HIGHLANDS, VIETNAM |
| title_full_unstemmed | SEASONAL VARIATION OF PHYTOPLANKTON FUNCTIONAL GROUPS IN TUYEN LAM RESERVOIR, CENTRAL HIGHLANDS, VIETNAM |
| title_short | SEASONAL VARIATION OF PHYTOPLANKTON FUNCTIONAL GROUPS IN TUYEN LAM RESERVOIR, CENTRAL HIGHLANDS, VIETNAM |
| title_sort | seasonal variation of phytoplankton functional groups in tuyen lam reservoir central highlands vietnam |
| topic | central highlands reservoir functional groups phytoplankton seasonal changes shannon diversity index. |
| url | https://tckh.dlu.edu.vn/index.php/tckhdhdl/article/view/1023 |
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