在生态系统中发生的级联倾斜,级联跳跃和间接倾斜
Ayanava Basak1, Syamal Kumar Dana1,2, Nandadulal Bairagi1
1Jadavpur University, Centre for Mathematical Biology and Ecology, Department of Mathematics, Kolkata-700032, India.
Physical review. E
|November 18, 2025
概括
由于环境变化,生态系统可能会突然过渡或倾斜. 这项研究揭示了间接倾斜,即即使前两个没有,第三个人口也会出人意料地转移,这突显了合系统的脆弱性.
科学领域:
- 生态生态学 生态生态学
- 复杂的系统复杂的系统.
- 数学生物学 数学生物学
背景情况:
- 临界点代表了系统行为中的突然变化.
- 结合在一起的生态系统容易发生突然的转变.
研究的目的:
- 在三种合生态模型中演示倾斜现象.
- 调查环境变化,合强度和非线性在驾驶过渡中的作用.
- 介绍和分析间接小费.
主要方法:
- 利用一个单向的,三种合模型 (细菌,浮游植物,鱼).
- 在第一个子系统中模拟了类似道的参数漂移.
- 分析了不同合强度的倾斜现象.
主要成果:
- 确定了三种倾斜现象:倾斜级联,级联跳跃和间接倾斜.
- 经过证明的间接倾斜,其中第三级子系统独立倾斜.
- 展示了合系统对微小参数变化的脆弱性.
结论:
- 间接倾倒是结合生态系统中的一个关键现象.
- 即使看似稳定的子系统也可能在连接的群体中引发意想不到的转变.
- 密切监控连接系统中的所有组件是必不可少的,即使是那些看起来稳定的组件.
相关概念视频
01:07Speciation Rates
22.5K
Overview
22.5K
02:17Ecological Succession
21.2K
Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species create more favorable ecological conditions for subsequent species, such as enhanced nutrient, water, or light availability. In contrast, inhibition happens when early successional species create unfavorable ecological conditions for potential successive species, such as limiting resource availability. In some cases, later successional species...
21.2K
01:16Cascaded Op Amps
1.1K
Operational amplifiers (op-amps) are versatile electronic components that can be interconnected in a cascade - one after another in a linear sequence. This cascading is possible due to their infinite input resistance and zero output resistance, allowing them to maintain their input-output relationships even when connected in series.
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...
In a cascaded system, each op-amp is referred to as a stage. The output of one stage drives the input of the subsequent stage. As the input signal passes through...
1.1K
01:35Trophic Levels
37.1K
All organisms in an ecosystem occupy a trophic level in the food chain. The lowest level consists of primary producers, which synthesize their food from either solar or chemical energy. Each subsequent level obtains energy from the levels below. Detritivores can occupy any of the levels above primary producers.
37.1K
00:46Trophic Efficiency
24.9K
Trophic level transfer efficiency (TLTE) is a measure of the total energy transfer from one trophic level to the next. Due to extensive energy loss as metabolic heat, an average of only 10% of the original energy obtained is passed on to the next level. This pattern of energy loss severely limits the possible number of trophic levels in a food chain.
24.9K
02:26Ecological Disturbance
20.6K
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.
20.6K