论文标题
扩散在生态准中性竞争中起着不寻常的作用
Diffusion plays an unusual role in ecological quasi-neutral competition in metapopulations
论文作者
论文摘要
我们研究了在群体框架内的准中性竞争的情况下，从2个物种动力学中提出的现象学。我们采用随机和确定性的方法，即基于空间约束的蒙特卡洛模拟和耦合的平均野外频率。我们的结果表明，竞争，出生死亡动力学和空间约束之间的多胎相互作用引起了生态多数派最少性转换与斑块之间的扩散之间的非单调关系。这意味着扩散可以提高出生死亡比并增强物种的保存。
We investigate the phenomenology emerging from a 2-species dynamics under the scenario of a quasi-neutral competition within a metapopulation framework. We employ stochastic and deterministic approaches, namely spatially-constrained individual-based Monte Carlo simulations and coupled mean-field ODEs. Our results show the multifold interplay between competition, birth-death dynamics and spatial constraints induces a nonmonotonic relation between the ecological majority-minority switching and the diffusion between patches. This means that diffusion can set off birth-death ratios and enhance the preservation of a species.
