CAJ | 학술논문

于2010年8月和2011年1月对大亚湾6个典型站位的浮游植物进行采样调查,估算了浮游植物细胞体积,分析了各区域浮游植物的粒级组成,比较了大亚湾各典型站位浮游植物生物量的粒级结构差异。大亚湾浮游植物的细胞体积范围为64-496757μm3,以1600-3200μm3粒级的浮游植物种类最多,分布在粒级谱两端的浮游植物的种类较少。夏季大亚湾浮游植物细胞丰度和由细胞体积转换的湿重生物量高于冬季,夏季平均为76.5×104个·L?1和1.6mg·L?1,冬季平均为22.52×104个·L?1和0.45mg·L?1。夏冬两季均以营养盐水平高且水交换能力差的 S8站位生物量最高,且该站夏冬两季均以甲藻为主。夏季大亚湾湾内站位和冬季大部分站位顶端粒级的种类对浮游植物初级生产力和碳库的贡献很重要,但因为丰度小,在细胞丰度表示的浮游植物现存量和优势种中没有体现,细胞体积转换生物量则能更为客观合理地表征浮游植物现存量和作为优势种的判断依据。
우2010년8월화2011년1월대대아만6개전형참위적부유식물진행채양조사,고산료부유식물세포체적,분석료각구역부유식물적립급조성,비교료대아만각전형참위부유식물생물량적립급결구차이。대아만부유식물적세포체적범위위64-496757μm3,이1600-3200μm3립급적부유식물충류최다,분포재립급보량단적부유식물적충류교소。하계대아만부유식물세포봉도화유세포체적전환적습중생물량고우동계,하계평균위76.5×104개·L?1화1.6mg·L?1,동계평균위22.52×104개·L?1화0.45mg·L?1。하동량계균이영양염수평고차수교환능력차적 S8참위생물량최고,차해참하동량계균이갑조위주。하계대아만만내참위화동계대부분참위정단립급적충류대부유식물초급생산력화탄고적공헌흔중요,단인위봉도소,재세포봉도표시적부유식물현존량화우세충중몰유체현,세포체적전환생물량칙능경위객관합리지표정부유식물현존량화작위우세충적판단의거。
Based on samples collected at six typical sites of Daya Bay in August 2010 and January of 2011, phytoplankton cell volume was estimated, phytoplankton size structure was analyzed, and phytoplankton biomass size structure was investigated. Cell volume of phytoplankton in Daya Bay was in the range of 64 to 496757 μm3, though only a few species distributed at the two ends of the range;the species distributed in the range of 1600?3200 μm3 were the richest. Phytoplankton cell abundance and cell volume converted biomass were 76.5×104 cell·L?1 and 1.6 mg·L?1 in summer, and 22.52×104 cell·L?1 and 0.45 mg·L?1 in winter, respectively, which were both obviously lower than those in summer. S8 that was labeled by highest nutrient and lowest water exchange capability showed the highest biomass and was dominated by dinoflagellates in both summer and winter. At most sites in winter and those sites inside the bay in summer, the species with the largest cell size made significant contribution to biomass and carbon stock. However, the contribution of large species with low abundance could not be seen through cell abundance represented biomass and key species. Biomass converted by cell volume was comparatively a more reasonable way to represent phytoplankton stock and to identify key species than cell abundance.