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kfas, vol. 57, no. 3, pp.278-291, June, 2024 DOI. https://doi.org/10.5657/KFAS.2024.0278

Vertical Distribution of Seaweeds in the Rocky Shore Ecosystem in

Geomundo, South Coast of Korea: Analyzing Strengths and Weaknesses

Using a Survey Method

배종일·황성일*·한상조·성봉준1·전병현1
수중생태기술연구소, 1씨캠

ABSTRACT

This study performed three research methods (destructive, non-destructive, and panoramic image analysis) to determine the most useful for identifying seaweed habitat characteristics. Panoramic images are suitable for understanding the overall seaweed distribution. The composition of the main dominant seaweed species showed a significant difference between the destructive and non-destructive methods using Quadrat. The destructive method showed Rhodophyta dominance, whereas the non-destructive was showed Phaeophyta as dominant. Destructive methods are disadvantageous because they destroy natural communities in sea areas where bleaching is severe. Non-destructive methods are disadvantageous because of the difficulty in analyzing small species. Performing 10 surveys using a non-destructive method was found to explain up to 80% of the species identified by the destructive method. However, considering the difficulty of field investigation, repeating the investigation with non-destructive methods at least 6-7 times is necessary to ensure that more than 60% of the destructive methods can be interpreted. To understand the distribution of oceanic marine algae, performing both destructive and non-destructive surveys are necessary, as each has its own merits and demerits.
Keyword

Seaweed, Quadrat sampling, Coverage, Image analysis, Spatial distribution