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Influence of temperature and salinity on germination of eelgrass (Zostera marina L.) seeds

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Abstract

Seagrass restoration as part of ocean ecosystem protection has been launched for many years all over the world, but intensive research on this subject in China has just begun in recent years. Seed broadcasting has been widely accepted as the most potentially useful method for seagrass restoration over large areas. We examined the influence of key environmental factors on seed germination to help promote eelgrass bed restoration. Under anoxic conditions, the influence of temperature and salinity on the germination rate of eelgrass (Zostera marina L.) seeds was examined at different combinations of four temperatures (4, 9, 14, and 24°C) and nine salinities (5 to 45, increment of 5). The effect of significant interaction of temperature and salinity on germination rate was observed (ANOVA) (P<0.001). The highest germination rate (83.3 ± 3.5)% was reached in 8 weeks at 14°C and salinity 5. Higher temperature significantly increased the germination rate at salinity 5 (P<0.001) during the whole observation period except for 24°C, while lower salinity significantly increased the germination rate at 14°C (P<0.001). Although significant interaction was found between temperature and salinity (P<0.001), the influence of salinity was stronger than that of temperature for the germination of eelgrass seeds. These results provide useful information for the propagation of artificial seedlings for seagrass restoration in China.

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Authors and Affiliations

  1. National Algae Engineering and Technique Research Center, Shandong Oriental Ocean Sci-tech Co., Ltd., Yantai, 264003, P. R. China

    Jinhua Pan, Xin Jiang, Xiaojie Li, Yizhou Cong, Zhuangzhi Zhang, Zhiling Li, Weili Zhou, Houwei Han & Shiju Luo

  2. College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, P. R. China

    Guanpin Yang

Authors
  1. Jinhua Pan
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  2. Xin Jiang
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  3. Xiaojie Li
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  4. Yizhou Cong
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  5. Zhuangzhi Zhang
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  6. Zhiling Li
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  7. Weili Zhou
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  8. Houwei Han
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  9. Shiju Luo
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  10. Guanpin Yang
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Correspondence to Guanpin Yang.

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Pan, J., Jiang, X., Li, X. et al. Influence of temperature and salinity on germination of eelgrass (Zostera marina L.) seeds. J. Ocean Univ. China 10, 147–152 (2011). https://doi.org/10.1007/s11802-011-1800-y

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  • DOI: https://doi.org/10.1007/s11802-011-1800-y

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