期刊
JOURNAL OF MARINE SCIENCE AND ENGINEERING
卷 10, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/jmse10111692
关键词
blooming mechanisms; golden tide; elevated temperature; nitrogen enrichment; Sargassum horneri
资金
- Natural Science Foundation of Jiangsu Province [BK20221398]
- National Natural Science Foundation of China [41706141]
- Six Talents Peaks in Jiangsu Province [JNHB-213]
- China Postdoctoral Science Foundation [2018M632668]
- 333 project of Jiangsu Province
- Jiangsu Planned Projects for Postdoctoral Research Funds [2018K025A]
- Haiyan project of Lianyungang city [2018-ZD-005]
- 521 project of Lianyungang city [LYG06521202169]
- Open project of Jiangsu Institute of Marine Resources Development [JSIMR202010]
- Lianyungang Planned Projects for Postdoctoral Research Funds
- Huaguoshan project of Lianyungang City
The response of Sargassum horneri to global warming and eutrophication was investigated. Elevated temperatures and eutrophication inhibited the growth and photosynthesis of S. horneri. It is suggested that future global warming and eutrophication may reduce the frequency and scale of gold tide outbreaks.
The golden tide, a large biomass bloom of the brown macroalgae Sargassum horneri, occurs yearly in the Yellow Sea, where it causes enormous economic and ecologic losses. To investigate the response of S. horneri to global warming and eutrophication, S. horneri was cultured under six conditions of varying temperature combinations (20 and 24 degrees C) and nitrogen levels (5, 30, and 300 mu M). The growth, photosynthetic performance, pigment content, and contents of soluble protein were assessed. The growth of S. horneri followed an increasing trend with increasing N concentration at ambient temperature. Elevated temperatures had an inhibitory effect on growth and photosynthesis in S. horneri, which was further enhanced by eutrophication. This suggests that in the globally warming environment of the future, eutrophication may reduce the frequency and scale of gold tide outbreaks during the hot season.
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