This study on the marine algal succession process of three areas (Yeongunri,
Pildo-island, Mangchiri), southern sea of Korea, was monitored March 2021 to May
2022. A total of 28 marine algal species were identified during the survey period,
with 3 ...
This study on the marine algal succession process of three areas (Yeongunri,
Pildo-island, Mangchiri), southern sea of Korea, was monitored March 2021 to May
2022. A total of 28 marine algal species were identified during the survey period,
with 3 species as Chlorophyta (10.7%), 8 species as Ochrophyta (28.6%), and 17
species as Rhodophyta (60.7%). In Yeongun-ri, a total of 20 marine algal species
were identified, with 3 species as Chlorophyta (15.0%), 6 species as Ochrophyta
(30.0%), and 11 species as Rhodophyta (55.0%). In Pildo-island, a total of 18 marine
algal species were identified, with 3 species as Chlorophyta (16.7%), 5 species as
Ochrophyta (27.8%), and 10 species as Rhodophyta (55.6%). In Mangchi-ri, a total
of 11 marine algal species were identified, with 2 species as Chlorophyta (18.2%), 3
species as Ochrophyta (27.3%), and 6 species as Rhodophyta (54.5%).
The (R+C)/P values for Yeongun-ri, Pildo, and Mangchiri were 2.00, 1.83 and 2.00,
respectively, indicating the marine algal flora of cold temperature to temperate.
During the survey period, the dominant and subdominant species by study areas were
Ulva australis and Colpomenia sinuosa in Yeongun-ri, Gracilaria textorii and
Sargassum honeri in Pildo-island, and S. honeri and U. australis in Mangchi-ri. In
each study areas, coarsely branched form (36.4-55.6%) showed the highest proportion,
and the filamentous form and crustose form (5.0%-9.1%) showed the lowest
proportion.
In all study areas, the marine algal succession process began with the establishment
of annual algae species such as U. australis and C. sinuosa during the early
succession. As the water temperature increased from July, melobesioidean algae
started to cover the substrate. In late succession, young plants of perennial large
brown algae started to establishment, showed typical successional patterns.