Restoration Project

Soon Chun Hyang University - North Pohang

Restoration Objective:

This study investigated the germling and growth efficacy of encapsulated zygotes of the brown alga Sargassum fulvellum, which plays an important role in seaweed forests, and examined their attachment to polyvinyl chloride (PVC) panels and concrete bricks in the sea. This could be used to increase the efficiency of current seaweed restoration efforts in Korea.

Key Reasons For Decline:

Multiple

Scientific Paper

A new approach to the restoration of seaweed beds using Sargassum fulvellum

S.M. Jung, J.H. Lee, S.H. Han, W.B. Jeon, G.Y. Kim, J. Lee, , Journal of Applied Phycology.https://doi.org/10.1007/s10811-020-02054-y

Organisation:

Soon Chun Hyang University

Site Observations:

Observation Date

1st Jun 2019 – 11th Jul 2019

Action Summary:

Seaweed zygotes from Sargassum fulvellum were encapsulated in polysaccharide-like alginates to improve attachment. Growth rate was tested in the lab, then encapsulated zygotes were attached to PVC panels and concrete bricks and transplanted to the ocean.

Lessons Learned:

Zygotes encapsulated in alginates had better germination and growth rates in the field.

Project Outcomes:

In the laboratory, the germination percentage of encapsulated Sargassum zygotes was 70%±1.6%, similar to the rate of unencapsulated zygotes. In the field experiment, the germination density and growth rates of encapsulated zygotes were 4 and 7 times greater, respectively, than those of unencapsulated zygotes. The germination density and growth rate of encapsulated zygotes on concrete bricks were also greater.

Key Reasons For Decline:

Multiple

Area of Restoration (In Square Metres)

1

Indicator Data:

Indicator:

Ending Value:

Starting Value:

Adult Kelp Density

0.37
/ m2
1.25
/ m2
Costings:
Cost Currency:USD