울릉도 연안에서 식물플랑크톤 우점종의 현존량 및 생체량 변동

Abstract

In order to understand variation of standing crops and biomass of phytoplankton, we investigated seasonally phytoplankton community in the coastal waters of Ulleungdo island in 2015. Phytoplankton community were dominated by Chaetoceros curvisetus (19.04%), C. socialis (13.12%), Skeletonema spp. (7.47%), C. compressus (6.87%) and Asterionellopsis glacialis (5.02%) in standing crops during the study. Whereas, Ditylum brightwellii, Guinardia striata, Rhizosolenia spp. and Skeletonema spp. were dominant in terms of biomass. As based on cell sizes, dominant groups were divided into micro- and nanophytoplankton (standing crops) and mesophytoplankton (biomass). Among the dominant species, Skeletonema spp. which is dominant in terms of standing crops and biomass, occurred consistently in the coastal waters of Ulleungdo island during the study.