密度依赖性（ density dependence）某种群的个体数或生物量的增减因素的作用（或过程）强度与该种群密度的联系性。
...开资源竞争，并且因所占有的资源量不同而具有不同的创建率、变化率和消亡率，综合表现出所谓的密度依赖性（density dependence），即在一定时间内，特定种群的规模对组织进入和退出种群的比率有影响。
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结果表明，中华哲水蚤对浮游植物的选择性摄食具有食物密度依赖性。
The results showed that the selective feeding behavior of C. sinicus was dependent on food density.
高海水浓度培养条件下的HW—1的细胞生长没有密度依赖性，而低海水浓度(10%或更低)培养条件下的细胞生长具有一定的密度依赖性。
HW-1 cells from high seawater-containing medium grew independently of cell-density, while those from low-seawater media (10% or less) showed density-dependent growth.
在奖赏依赖性高分人群中，灰质在颞叶的顶端密度更大。
Gray matter on the poles of the temporal lobes was significantly denser in the subjects who had scored high on reward dependence than in the subjects who had not.
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