earticle

영어

This study was conducted in 2022 and 2023 to determine the distribution and dynamics of phytoplankton in the Jukryeong Wetland of Sobaeksan National Park. A total of 193 phytoplankton species composed of eight taxa were found. Among these, 66 species of Euglenophyta, 62 species of Chlorophyta, and 26 species of Charophyta were identified, making them the most important taxa among the taxonomic groups. The abundances of Chlorophyta and Charophyta were highest in spring and lowest in summer and then increased again during fall. The total standing crops of Euglenophyta will increase by approximately 5.8 times in 2023 compared to 2022. Regarding the correlation between environmental factors and Chlorophyta, water temperature (r = 0.12), pH (r = 0.05), and EC (r = 0.18) were significant; however, the correlation coefficients were very low. Charophyta was highly correlated with pH (r = -0.4), EC (r = 0.39), and Euglena algae with water temperature (r = 0.66). Charophyta had high correlation coefficients with pH (r = -0.4) and EC (r = 0.39), while Euglenophyta had high correlation coefficients with water temperature (r = 0.66). The dominant species were Aphanocapsa delicatissima, Dictyosphaerium pulchellum, Dictyosphaerium ehrenbergianum, and Trachelomonas volvocina. Among the dominant species, Tr. volvocina was the only species that consistently appeared as a dominant and subdominant species for two years and was highly correlated with water temperature (r = 0.76) and pH (r = 0.74). In a comparison of existing studies, the number of Chlorophyta species has increased rapidly compared to the past, Euglenophyta and Bacillariophyta have appeared as taxa that did not appear in the past, and species that appeared in the past have been replaced by different species of Charophyta. These results indicate that many changes have occurred in the water environment of the Jukryeong Wetland, either artificially or naturally.

한국어

소백산국립공원의 죽령습지에서 식물플랑크톤의 분포와 동태를 파악하기 위해 2022년과 2023년에 수행하였다. 출현한 식물플랑크톤 은 모두 193 종류로, 8 분류군으로 구성되었고, 이들 분류군 중에서 유글레나조류가 66 종류, 녹조류가 62 종류, 윤조류 26종류가 출현하여 분류군 중에서 가장 중요한 분류군이었다. 녹조류와 윤조류는 현존량은 춘계에 가장 높고 하계에 가장 낮았으며 추계에 다시 증가하는 천이를 보였다. 유글레나조류의 현존량은 2022년에 비해 2023년에 약 5.8배 정도 증가하였다. 환경요인과 녹조류의 상관관계에서 수온(r=0.12), pH (r=0.05), EC (r=0.18)는 유효성은 있었으나 상관계수는 매우 낮았다. 윤조류는 pH (r=-0.4), EC (r=0.39), 유글레나조류는 수온 (r=0.66)과 상관관계가 높았다. 우점종은 Aphanocapsa delicatissima, Dictyosphaerium pulchellum, Dictyosphaerium ehrenbergianum, Trachelomonas volvocina 등 이었다. 우점종중 Tr. volvocina는 2년간 지속적으로 우점종 및 아우점종으로 출현한 유일한 종이며, 수온(r=0.76)과 pH (r=0.74)와 상관관계가 높았다. 기존 연구의 비교에서, 녹조류는 과거에 비해 출현종수가 급격한 증가하였고, 유글레나조류 및 규조류는 과거 출현하지 않았던 분류군으로 새롭게 출현하였으며, 윤조류는 과거 출현한 종이 다른 종으로 대치되었다. 이러 한 결과는 죽령습지의 수체내 환경이 인위적이든 자연적인든 많은 변화가 있었음을 의미한다