Species composition and distribution of marine algae at Con Co island, Quang Tri province

Tien Dam Duc; Mai Anh Nguyen Thi; Linh Nguyen Manh; Luong Cao Van; Chien Pham Van

doi:10.15625/1859-3097/16052

Author affiliations

Authors

Tien Dam Duc Institute of Marine Environment and Resources, VAST, Vietnam; Graduate University of Science and Technology, VAST, Vietnam
Mai Anh Nguyen Thi Institute of Marine Environment and Resources, VAST, Vietnam
Linh Nguyen Manh Institute of Marine Environment and Resources, VAST, Vietnam
Graduate University of Science and Technology, VAST, Vietnam
Luong Cao Van Institute of Marine Environment and Resources, VAST, Vietnam
Chien Pham Van Institute of Marine Environment and Resources, VAST, Vietnam

DOI:

https://doi.org/10.15625/1859-3097/16052

Keywords:

Con Co, composition, distribution, marine algae, species.

Abstract

This paper presents results on species composition and distribution of marine algae at 6 transects of Con Co islands in May 2020. The result of studies shows that 95 species of marine algae are recorded in the study area, belonging to four divisions: Cyanophytes, Rhodophytes, Ochrophytes and Chlorophytes. Among them, five (5) species are classified into Cyanophytes (comprising 5.3% of total species); forty one (41) species into Rhodophytes (43.1%); twenty-nine (29) species into Ochrophytes/Phaeophytes (30.5%) and twenty (20) species into Chlorophytes (21.1%). The species composition of marine algae in Con Co shows significant differences as follows: 48 species (transect number I) to 72 species (transect number IV) and the average value is 60.7 species per transect. Sørensen similarity coefficient fluctuates from 0.56 (transects number I and II) to 0.81 (transects number II and IV, number III and IV) and the average value is 0.70. The current investigations show that twenty-two (22) species are distributed the littoral zone (22.9% of total species) only and thirty-seven (37) species in the sub-littoral zone only. In which there are thirty six (36) species distributed in both littoral zone and sub-littoral zone (44.8%). The algal flora in Con Co is characterized by subtropics.

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