The green tide in Yingkou, China in summer 2021 was caused by a subtropical alga—<italic style="font-style: italic">Ulva meridionalis</italic> (Ulvophyceae, Chlorophyta)

Xiaoqian LÜ; Hao XU; Sheng ZHAO; Fanzhou KONG; Tian YAN; Peng JIANG

doi:10.1007/s00343-022-2014-4

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The green tide in Yingkou, China in summer 2021 was caused by a subtropical alga—Ulva meridionalis (Ulvophyceae, Chlorophyta)

Marine harmful macroalgae | Updated：2023-05-20

- The green tide in Yingkou, China in summer 2021 was caused by a subtropical alga—Ulva meridionalis (Ulvophyceae, Chlorophyta)
- Journal of Oceanology and Limnology Vol. 40, Issue 6, Pages: 2354-2363(2022)
- Affiliations：
  
  1.CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
  2.Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao 266237, China
  3.University of Chinese Academy of Sciences, Beijing 100049, China
  4.North China Sea Environmental Monitoring Center, State Oceanic Administration, Qingdao 266033, China
  5.CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
  6.Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao 266237, China
- Author bio：
  
  Peng JIANG, E-mail: jiangpeng@qdio.ac.cn
- Funds：
- DOI：10.1007/s00343-022-2014-4
  CLC：
- Received：11 January 2022，
  
  Accepted：11 February 2022，
  
  Online First：18 April 2022，
  
  Published：2022-11
- Accepted：
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Xiaoqian LÜ, Hao XU, Sheng ZHAO, et al. The green tide in Yingkou, China in summer 2021 was caused by a subtropical alga—Ulva meridionalis (Ulvophyceae, Chlorophyta)[J]. Journal of Oceanology and Limnology, 2022, 40(6): 2354-2363.
DOI：

Xiaoqian LÜ, Hao XU, Sheng ZHAO, et al. The green tide in Yingkou, China in summer 2021 was caused by a subtropical alga—Ulva meridionalis (Ulvophyceae, Chlorophyta)[J]. Journal of Oceanology and Limnology, 2022, 40(6): 2354-2363. DOI： 10.1007/s00343-022-2014-4.

摘要

Abstract

The large-scale green tide caused by

Ulva

has occurred successively in the Yellow Sea since 2007

and new events of green tide also continued to appear in nearby sea areas

indicating an undergoing rapid development of occurrence patterns for harmful macroalgal blooms (HMBs) along coastal China. In August 2021

a green tide occurred for the first time in Bayuquan sea area of Yingkou city

Liaoning Province in the Bohai Sea. In this study

morphological and molecular approaches were used to identify the causative species as

U. meridionalis

an alien subtropical alga previously found to dominate green tides in the South China Sea. According to the hydrological data of Bayuquan in summer 2021

combined with morphological and developmental observations for this alga

we hypothesized that the disturbance caused by the typhoon In-Fa might have detached the local

U. meridionalis

from substrates

especially for those thalli with poorly developed holdfasts

and the ensuing wave-free period with unusually high temperature

which fell in the reported optimum growth temperature for

U. meridionalis

might have provided the favorable conditions for the final bloom of the floating seaweeds. This is the first report on the bloom of subtropical

U. meridionalis

in the north temperate sea zone

indicating that the ecological risk of causing green tides in the future by this rapidly spreading species deserves high attention.

关键词

Keywords

references

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The green tide in Yingkou, China in summer 2021 was caused by a subtropical alga—Ulva meridionalis (Ulvophyceae, Chlorophyta)

DOI：10.1007/s00343-022-2014-4

摘要

Abstract

关键词

Keywords

references