侵袭和相互作用决定了开放式进化的生态系统中的种群组成.
Youngjai Park1,2,3,4, Takashi Shimada5,6, Seung-Woo Son2,3,7
1Department of Physics, Inha University, Incheon 22212, South Korea.
Chaos (Woodbury, N.Y.)
|June 23, 2023
概括
物种相互作用塑造了生态系统,但入侵改变了这些动态. 频繁的入侵可以增加物种多样性,改变社区组成,即使有强烈的相互作用.
科学领域:
- 生态生态学 生态生态学
- 理论生态学理论生态学
- 人口动态 人口动态
背景情况:
- 物种相互作用是生态系统人口组成的关键驱动因素.
- 传统的生态研究往往假定固定的相互作用结构.
- 侵略引入时间变化,影响社区动态.
研究的目的:
- 调查入侵对相互作用物种中种群组成的影响.
- 在开放的生态系统中探索入侵动态和物种相互作用之间的相互作用.
- 在一般化的Lotka-Volterra动态下分析社区结构与入侵.
主要方法:
- 模拟开放式进化的生态系统.
- 使用一般化的洛特卡-沃尔特拉类型动力学.
- 在不同的入侵频率和相互作用强度下分析系统行为.
主要成果:
- 根据入侵和相互作用的强度确定了两个不同的生态制度.
- 与缓慢入侵的强烈相互作用导致低多样性和突如其来的统治地位转移.
- 频繁的入侵促进了更高的多样性和缓慢的丰度变化,防止平衡.
结论:
- 侵略动态显著改变了社区的组成和多样性.
- 侵袭率和相互作用强度之间的平衡决定了生态制度的转变.
- 了解入侵影响对于预测生态系统稳定性和多样性至关重要.
相关概念视频
00:30What are Populations and Communities?
34.1K
Overview
34.1K
01:09Mutation, Gene Flow, and Genetic Drift
58.7K
In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).
58.7K
02:39Gene Flow
35.3K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
35.3K
03:33Genetic Drift
40.0K
Natural selection—probably the most well-known evolutionary mechanism—increases the prevalence of traits that enhance survival and reproduction. However, evolution does not merely propagate favorable traits, nor does it always benefit populations.
40.0K
02:26Ecological Disturbance
17.2K
An ecological disturbance is a temporary disruption in the environment resulting from abiotic, biotic, or anthropogenic factors, causing a pronounced change in an ecosystem. The impact of an ecological disturbance, which can depend on its intensity, frequency, and spatial distribution, plays a significant role in shaping the species diversity within the ecosystem.
17.2K
01:07Speciation Rates
21.3K
Overview
21.3K