The zooplankton biomass in the Sea of Japan
The zooplankton biomass in the Sea of Japan
复制标题
日本海浮游动物生物量
DOI：
10.1046/j.1365-2419.1999.00116.x
复制
发表时间：
1999
影响因子：
2.6
通讯作者：
S. Hasegawa
中科院分区：
文献类型：
--
作者：
Y. Hirota;S. Hasegawa
我们研究了1966年至1990年日本海浮游动物的季节，年度变化和水平分布。浮游动物在春季最为丰富。春季最大值分别出现在研究区南部和东部的2 - 3月和4 - 5月。夏秋两季，东部有一次高峰最为明显。昼夜生物量的差异春季较大，夏秋季较小。南部近海生物量在1966 ~ 1983年间每隔3年达到一个高峰，1990年又急剧增加。在39°N和40°N以北的地区密度较高。日本海上层150 m（106 km 2）的总生物量白天估计为9.5 × 106 t，夜间为16.6 × 106 t。
We examined seasonal, annual variation and horizontal distribution of zooplankton in the Sea of Japan from 1966 to 1990. Zooplankton was most abundant in the spring. The spring maximum appeared in February–March and in April–May in the southern and eastern parts of the study areas, respectively. In the summer and autumn, a secondary peak was most conspicuous in the eastern part. The difference between the estimated biomass at night and day was large in the spring and small in summer and autumn. The biomass in the offshore southern area peaked about every 3 years between 1966 and 1983, and increased abruptly in 1990. The density in the area north of 39°N or 40°N was high. Total biomass estimated in the upper 150 m layer in the Sea of Japan (106 km2) was 9.5 × 106 t in the daytime and 16.6 × 106 t at night.