Interactions between Fe and light strongly affect phytoplankton communities in a eutrophic lake
The global increase in occurrence of harmful algae blooms in lakes has gained widespread attention. Although N and P are the main factors for primary productivity in lake ecosystems, dissolved iron (Fe) plays a crucial role as an essential micronutrient for phytoplankton growth. The interaction betw...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-07-01
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| Series: | Ecological Indicators |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X21003290 |
| _version_ | 1819022021457084416 |
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| author | Yuxiang Yuan Ming Jiang Xiaoyan Zhu Hongxian Yu Marinus L. Otte |
| author_facet | Yuxiang Yuan Ming Jiang Xiaoyan Zhu Hongxian Yu Marinus L. Otte |
| author_sort | Yuxiang Yuan |
| collection | DOAJ |
| description | The global increase in occurrence of harmful algae blooms in lakes has gained widespread attention. Although N and P are the main factors for primary productivity in lake ecosystems, dissolved iron (Fe) plays a crucial role as an essential micronutrient for phytoplankton growth. The interaction between Fe and light in phytoplankton growth is reasonably well studied in marine ecosystems, but there is a lack of understanding of this interaction in lakes. We conducted both a field study and an incubation experiment to identify the role of Fe and light in modulating phytoplankton growth and species composition in a eutrophic lake, Lake Xingkai, Northeast China. We found that the interactions between Fe bioavailability and light intensity impact phytoplankton community structure and Fe uptake. Phytoplankton composition and abundance varied greatly in response to elevated light and Fe. Bacillariophyta are favored under light-Fe co-limitation, while the dominant taxa changed from Bacillariophyta to Cyanophyta and Chlorophyta under elevated Fe and light conditions. We unveil the competitive advantage of a common bloom-forming and N2-fixing algae Anabaena azotica relative to other species under high light and high Fe conditions. Our findings expand the knowledge of Fe-light interactions on phytoplankton growth and provide fresh insight into phytoplankton community responses to variation in light and Fe in eutrophic lakes. This information is important for efficient eutrophication control and lake management. |
| first_indexed | 2024-12-21T04:16:22Z |
| format | Article |
| id | doaj.art-70c0fb27be6b4046b83aef1d19945f74 |
| institution | Directory Open Access Journal |
| issn | 1470-160X |
| language | English |
| last_indexed | 2024-12-21T04:16:22Z |
| publishDate | 2021-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj.art-70c0fb27be6b4046b83aef1d19945f742022-12-21T19:16:18ZengElsevierEcological Indicators1470-160X2021-07-01126107664Interactions between Fe and light strongly affect phytoplankton communities in a eutrophic lakeYuxiang Yuan0Ming Jiang1Xiaoyan Zhu2Hongxian Yu3Marinus L. Otte4Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, ChinaKey Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China; Corresponding authors.Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun, China; Corresponding authors.College of Wildlife Resources, Northeast Forestry University, Harbin, ChinaWet Ecosystem Research Group, Department of Biological Sciences, North Dakota State University, Fargo, USAThe global increase in occurrence of harmful algae blooms in lakes has gained widespread attention. Although N and P are the main factors for primary productivity in lake ecosystems, dissolved iron (Fe) plays a crucial role as an essential micronutrient for phytoplankton growth. The interaction between Fe and light in phytoplankton growth is reasonably well studied in marine ecosystems, but there is a lack of understanding of this interaction in lakes. We conducted both a field study and an incubation experiment to identify the role of Fe and light in modulating phytoplankton growth and species composition in a eutrophic lake, Lake Xingkai, Northeast China. We found that the interactions between Fe bioavailability and light intensity impact phytoplankton community structure and Fe uptake. Phytoplankton composition and abundance varied greatly in response to elevated light and Fe. Bacillariophyta are favored under light-Fe co-limitation, while the dominant taxa changed from Bacillariophyta to Cyanophyta and Chlorophyta under elevated Fe and light conditions. We unveil the competitive advantage of a common bloom-forming and N2-fixing algae Anabaena azotica relative to other species under high light and high Fe conditions. Our findings expand the knowledge of Fe-light interactions on phytoplankton growth and provide fresh insight into phytoplankton community responses to variation in light and Fe in eutrophic lakes. This information is important for efficient eutrophication control and lake management.http://www.sciencedirect.com/science/article/pii/S1470160X21003290Phytoplankton growthIron limitationLightLake XingkaiAnabaena |
| spellingShingle | Yuxiang Yuan Ming Jiang Xiaoyan Zhu Hongxian Yu Marinus L. Otte Interactions between Fe and light strongly affect phytoplankton communities in a eutrophic lake Ecological Indicators Phytoplankton growth Iron limitation Light Lake Xingkai Anabaena |
| title | Interactions between Fe and light strongly affect phytoplankton communities in a eutrophic lake |
| title_full | Interactions between Fe and light strongly affect phytoplankton communities in a eutrophic lake |
| title_fullStr | Interactions between Fe and light strongly affect phytoplankton communities in a eutrophic lake |
| title_full_unstemmed | Interactions between Fe and light strongly affect phytoplankton communities in a eutrophic lake |
| title_short | Interactions between Fe and light strongly affect phytoplankton communities in a eutrophic lake |
| title_sort | interactions between fe and light strongly affect phytoplankton communities in a eutrophic lake |
| topic | Phytoplankton growth Iron limitation Light Lake Xingkai Anabaena |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X21003290 |
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