(Table 3) Abundance of radiolarians and other siliceous microfossils of ODP Hole 113-690B@en

Estimates are subjective, but reproducible to nearest major category and based on examination of several thousand to several tens of thousands of radiolarians/sample. Diatoms, radiolarian, and silicoflagellate abundance as % total coarse fraction. Radiolarian species as % of radiolarian assemblage. VA = very abundant, >90% of total; A = abundant, 20%-50<%; C = common, 5%-20%; F = few, 0.5%-5%; R = rare, > 1 specimen but <0.5%; + = single specimen; X = present, but relative abundance not determined; #- = specially searched for but not seen, - = not observed. ? = specimens with uncertain taxonomic assignment. Size fraction >63 µm.本估算为主观判断，但可重现至主要大类级别，其基于对每份样品中数千至数万件放射虫（radiolarians）的镜检鉴定。统计指标包含硅藻（diatoms）、放射虫及硅鞭藻（silicoflagellate）占总粗组分（total coarse fraction）的百分比丰度，以及放射虫物种占放射虫组合群（radiolarian assemblage）的百分比丰度。丰度分级标准如下：VA（极丰富，very abundant）：占总量>90%；A（丰富，abundant）：20%~<50%；C（常见，common）：5%~20%；F（稀少，few）：0.5%~5%；R（稀有，rare）：仅见1件以上标本但占比<0.5%；+：仅见单一件标本；X：存在但相对丰度未确定；#-：经专门搜寻但未发现；-：未观测到；?：分类归属存疑的标本。本次分析采用粒径>63微米的粒级组分（size fraction >63 µm）。