Removal of phenanthrene from coastal waters by green tide algae Ulva prolifera

Abstract The Ulva prolifera green tides in the Yellow Sea, China, which have been occurring since 2007, are a serious environmental problem attracting worldwide attention. Despite extensive research, the outbreak mechanisms have not been fully understood. Comprehensive analysis of anthropogenic and natural biotic and abiotic factors reveals that human activities, regional physicochemical conditions and algal physiological characteristics as well as ocean warming and biological interactions (with microorganism or other macroalgae) are closely related to the occurrence of green tides. Dynamics of these factors and their interactions could explain why green tides suddenly occurred in 2007 and decreased abruptly in 2017. Moreover, the consequence of green tides is serious. The decay of macroalgal biomass could result in hypoxia and acidification, possibly induce red tide and even have a long-lasting impact on coastal carbon cycles and the ecosystem. Accordingly, corresponding countermeasures have been proposed in our study for future reference in ecosystem management strategies and sustainable development policy.

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Characterization of a broad substrates specificity acyl-CoA: diacylglycerol acyltransferase 1 from the green tide alga Ulva prolifera

Acta Oceanologica Sinica ◽

10.1007/s13131-020-1659-0 ◽

2020 ◽

Vol 39 (10) ◽

pp. 42-49

Author(s):

Xiaowen Zhang ◽

Xiaoyuan Chi ◽

Yitao Wang ◽

Jian Zhang ◽

Yan Zhang ◽

...

Keyword(s):

Diacylglycerol Acyltransferase ◽

Ulva Prolifera ◽

Green Tide

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Spatiotemporal Patterns and Morphological Characteristics of Ulva prolifera Distribution in the Yellow Sea, China in 2016–2018

Remote Sensing ◽

10.3390/rs11040445 ◽

2019 ◽

Vol 11 (4) ◽

pp. 445 ◽

Cited By ~ 10

Author(s):

Yingzhi Cao ◽

Yichen Wu ◽

Zhixiang Fang ◽

Xiaojian Cui ◽

Jianfeng Liang ◽

...

Keyword(s):

Yellow Sea ◽

Vegetation Index ◽

Morphological Changes ◽

Surface Wind ◽

Morphological Characteristics ◽

Ulva Prolifera ◽

Spatiotemporal Patterns ◽

The Yellow Sea ◽

Green Tide ◽

Sea Surface Wind

The world’s largest macroalgal blooms, Ulva prolifera, have appeared in the Yellow Sea every summer on different scales since 2007, causing great harm to the regional marine economy. In this study, the Normalized Difference of Vegetation Index (NDVI) index was used to extract the green tide of Ulva prolifera from MODIS images in the Yellow Sea in 2016–2018, to investigate its spatiotemporal patterns and to calculate its occurrence probability. Using the standard deviational ellipse (SDE), the morphological characteristics of the green tide, including directionality and regularity, were analyzed. The results showed that the largest distribution and coverage areas occurred in 2016, with 57,384 km2 and 2906 km2, respectively and that the total affected region during three years was 163,162 km2. The green tide drifted northward and died out near Qingdao, Shandong Province, which was found to be a high-risk region. The coast of Jiangsu Province was believed to be the source of Ulva prolifera, but it was probably not the only one. The regularity of the boundary shape of the distribution showed a change that was opposite to the variation of scale. Several sharp increases were found in the parameters of the SDE in all three years. In conclusion, the overall situation of Ulva prolifera was still severe in recent years, and the sea area near Qingdao became the worst hit area of the green tide event. It was also shown that the sea surface wind played an important part in its migration and morphological changes.

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Phycoremediation of coastal waters contaminated with bisphenol A by green tidal algae Ulva prolifera

The Science of The Total Environment ◽

10.1016/j.scitotenv.2019.01.132 ◽

2019 ◽

Vol 661 ◽

pp. 55-62 ◽

Cited By ~ 8

Author(s):

Cui Zhang ◽

Jian Lu ◽

Jun Wu ◽

Yongming Luo

Keyword(s):

Bisphenol A ◽

Coastal Waters ◽

Ulva Prolifera

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Composition variations and spatiotemporal dynamics of dissolved organic matters during the occurrence of green tide (Ulva prolifera blooms) in the Southern Yellow Sea, China

Marine Pollution Bulletin ◽

10.1016/j.marpolbul.2019.07.021 ◽

2019 ◽

Vol 146 ◽

pp. 619-630 ◽

Cited By ~ 3

Author(s):

Xiuzhu Li ◽

Conghe Li ◽

Ying Bai ◽

Xiaoyong Shi ◽

Rongguo Su

Keyword(s):

Yellow Sea ◽

Spatiotemporal Dynamics ◽

Ulva Prolifera ◽

Green Tide ◽

Southern Yellow Sea ◽

Organic Matters ◽

The Southern Yellow Sea ◽

Dissolved Organic Matters

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First Record of the Harmful Raphidophyte Chattonella marina Bloom in Rushan Coast, China in 2008 after the Occurrence of the Green Tide

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.663.911 ◽

2013 ◽

Vol 663 ◽

pp. 911-921

Author(s):

Xiu Kai Song ◽

Ya Jun Shi ◽

Yu Zeng Sun ◽

Yang Jin ◽

Xiang Yang Jiang ◽

...

Keyword(s):

Red Tide ◽

First Record ◽

Ulva Prolifera ◽

Green Tide ◽

Chattonella Marina ◽

Shandong Peninsula ◽

Sea Temperature ◽

Average Cell ◽

Routine Monitoring ◽

First Time

The red tide of Chattonella marina (Subrahmanyan) Hara & Chihara occurred in Rushan coast, Shandong Peninsula, China, in August 2008. Based on the four cruises of routine monitoring and four cruises of monitoring of the red tide in Rushan, the process of the red tide and possible mechanism were analyzed. During the bloom, the maximum area of the red tide was about 100 km2; the maximum average cell abundance of C. marina reached 1.46×106 cells/L; surface water temper-ature ranged between 26.1 °C and 27.2 °C, and salinity between 26.6 ‰ and 30.3 ‰. The material released from the decayed green tide species Ulva prolifera could provide a chance for the bloom of C. marina, combined the optimum sea temperature, light and nutrient condition. It was the first time to link a red tide event with the consequence of the green tide in Yellow Sea, which could give an attention on our future monitoring and management.

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