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Assessment of the establishment success of eelgrass Zostera marina (Alismatales: Zosteraceae) from seeds in a cost-effective seed protection method: implications for large-scale restoration

  • Jian-Sheng Zhao

    Jian-Sheng Zhao and Chao Fang are Master’s Degree candidates at Ocean University of China doing work on seagrass restoration.

    , Yan-Shan Liu

    Yan-Shan Liu is an assistant research fellow of Environmental Science at the Freshwater Fisheries Research Institute of Jiangsu Province.

    , Pei-Dong Zhang

    Pei-Dong Zhang is an Associate Professor of Marine Biology at the Ocean University of China. He was awarded a PhD in Marine Biology by the Ocean University of China. His more recent research has concentrated on seagrass biology and restoration.

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    , Wen-Tao Li

    Wen-Tao Li is an assistant research fellow of Marine Biology at the Ocean University of China. He was awarded a PhD in Marine Biology by the Pusan National University.

    and Chao Fang

    Jian-Sheng Zhao and Chao Fang are Master’s Degree candidates at Ocean University of China doing work on seagrass restoration.

Published/Copyright: July 22, 2016

Abstract

We describe a protective bag method for planting seeds of eelgrass Zostera marina and have evaluated the cost effectiveness of the method for potential use in large-scale restoration projects. A 90-day laboratory experiment was conducted to determine the effect of protective bags on seed viability. Successful establishment of new patches from seeds in the protective bags was assessed through a seed-sowing field experiment over 11 months. The viability of Z. marina seeds was not significantly affected by the use of protective bags. Retention rate of Z. marina seeds in the protective bags ranged from 64 to 98%, with an average of 85% after 5 months following distribution. The seedling establishment rate of Z. marina ranged from 11 to 44%, with an average of 24% after 6 months following distribution. New patches from the planted seeds were fully developed 11 months after planting with a maximum shoot density of 350 shoots m-2. The cost of planting in 1 ha of sea bed with Z. marina seeds was $14,820, and the average cost per Z. marina seed was $0.03. The protective bag method is an efficient and cost-effective restoration technique, and is potentially useful in facilitating large-scale restoration projects.

Award Identifier / Grant number: 41576112

Funding statement: This study was supported by funds from National Natural Science Foundation of China (41576112), National Marine Public Welfare Research Project (201405010), Basic Research Special Foundation for State Science and Technology of China (2015FY110600), and Science and Technology Development Program of Shandong (2014GSF117003).

About the authors

Jian-Sheng Zhao

Jian-Sheng Zhao and Chao Fang are Master’s Degree candidates at Ocean University of China doing work on seagrass restoration.

Yan-Shan Liu

Yan-Shan Liu is an assistant research fellow of Environmental Science at the Freshwater Fisheries Research Institute of Jiangsu Province.

Pei-Dong Zhang

Pei-Dong Zhang is an Associate Professor of Marine Biology at the Ocean University of China. He was awarded a PhD in Marine Biology by the Ocean University of China. His more recent research has concentrated on seagrass biology and restoration.

Wen-Tao Li

Wen-Tao Li is an assistant research fellow of Marine Biology at the Ocean University of China. He was awarded a PhD in Marine Biology by the Pusan National University.

Chao Fang

Jian-Sheng Zhao and Chao Fang are Master’s Degree candidates at Ocean University of China doing work on seagrass restoration.

Acknowledgments

This study was supported by funds from National Natural Science Foundation of China (41576112), National Marine Public Welfare Research Project (201405010), Basic Research Special Foundation for State Science and Technology of China (2015FY110600), and Science and Technology Development Program of Shandong (2014GSF117003).

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Received: 2016-3-28
Accepted: 2016-6-30
Published Online: 2016-7-22
Published in Print: 2016-8-1

©2016 Walter de Gruyter GmbH, Berlin/Boston

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