摘要
用最优化适合度种群生态学模型模拟研究了中华哲水蚤和小拟哲水蚤种群在渤海生态系统中的垂直移动模式。生命周期、世代时间、繁殖力和产卵量是决定这两种桡足类垂直移动的主要因素。在中华哲水蚤生活史类型中 ,无水平流动或水平流动速率很小时 ,昼夜的垂直移动能使其获得最优的生态适合度。水流的增加或方向的改变会使其在底层的停留时间增加。在小拟哲水蚤生活史类型中 ,随着水流的增加及其随之而来的损失率增高 。
Optimal population ecological adaptation model is used to demonstrate the vertical migration of Calanus sinicus and Paracalanus parvus population of Bohai Sea ecosystem. Life cycle, generation time, fecundity, and egg production quantity are the main factors to determine these two species' vertical migration. For a Calanus sinicus type life history, fitness is maximized by diurnal vertical migrations. When advection risk in surface waters is low and by spending less time in the upper waters as the velocity increases. For a Paracalanus parvus type life history, vertical migration is occurred when advection increases.
出处
《生态学报》
CAS
CSCD
北大核心
2001年第5期820-826,共7页
Acta Ecologica Sinica
基金
国家自然科学重大基金!( 49790 0 1 0 )
国家重点基础(973)研究资助项目!(NO.1 9990 4 37)
