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相关概念视频

What is Biodiversity?01:19

What is Biodiversity?

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Biodiversity describes the variety of living things at multiple organizational levels: genetic, species and ecosystem diversity. Species diversity includes all branches of the evolutionary tree from single-celled prokaryotic organisms, bacteria, and archaea, to the eukaryotic kingdoms: plants; animals; fungi; and protists. To date, there have been about 1.75 million species identified, and new species are discovered every week.
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Ecological Disturbance02:26

Ecological Disturbance

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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.
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Threats to Biodiversity01:50

Threats to Biodiversity

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There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
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Biodiversity and Human Values01:24

Biodiversity and Human Values

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Human civilization relies on biodiversity in many ways. Sudden changes in species biodiversity result in environmental changes that can modify weather patterns and therefore human civilizations.
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Effects of feedback01:24

Effects of feedback

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Feedback in control systems plays a critical role in shaping various operational parameters, extending beyond simple error reduction to influence stability, bandwidth, gain, impedance, and sensitivity. Understanding these effects requires examining a basic feedback system characterized by defined input, output, error, and feedback signals.
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
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Ecological Niches02:02

Ecological Niches

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All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.
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相关实验视频

Updated: Jan 27, 2026

JenaTron - An Experimental Approach to Study the Effects of Plant History and Soil History on Grassland Ecosystem Functioning
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生物多样性对生态稳定的影响通过生态系统层面的反.

Chun-Wei Chang1,2, Chih-Hao Hsieh1,2,3,4,5, Maiko Kagami6

  • 1Institute of Fisheries Science, Department of Life Science, National Taiwan University, Taipei, Taiwan.

Ecology
|January 26, 2026
PubMed
概括

生物多样性的动态,而不仅仅是它的存在,是生态系统稳定的关键. 我们的模型显示了植物浮游生物多样性和营养反循环如何增强稳定性并防止灭绝.

关键词:
生物多样性生物多样性生态反是一种生态反.生态系统的稳定性岛屿生物地理学多性相互作用的多性相互作用

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科学领域:

  • 生态生态学 生态生态学
  • 生态系统动力学 生态系统动力学
  • 生物多样性研究 生物多样性研究

背景情况:

  • 传统的生态理论通常将生物多样性视为静态,忽视其动态性和对生态系统稳定的影响.
  • 现有的投资组合机制强调生物多样性在稳定中的作用,但忽视了塑造多样性动态的基础生态系统层次过程.

研究的目的:

  • 根据岛屿生物地理学理论 (IBT) 开发一种新的模型框架,以研究将生物多样性动态与生态系统稳定性联系起来的生态系统级机制.
  • 探索物种多样性,资源可用性和食用相互作用之间的反循环如何影响生态系统稳定.

主要方法:

  • 开发了一个模型框架,将物种多样性视为浮游生物系统中的状态变量.
  • 嵌入了植物浮游生物多样性,营养素可用性和多性相互作用之间的反机制.
  • 分析了30年的植物浮游生物数据集,以经验验证物种丰富性和社区生物质稳定性的模型发现.

主要成果:

  • 植物浮游生物的多样性被证明可以调节食用相互作用,影响浮游生物质和营养循环,创造反循环,重塑多样性.
  • 反循环增强生态系统对灭绝的抵抗力;增加多样性提高了在灭绝风险期间资源利用效率,而减少多样性减轻了过度放牧.
  • 经验数据证实了植物浮游生物物种丰富的时间变化与社区生物质的稳定性之间的因果关系.

结论:

  • 生物多样性的动态,由生态系统层面的反驱动,在保持生态系统稳定方面发挥着至关重要的作用,独立于人口或社区层面的投资组合效应.
  • 该研究揭示了一种新的机制,即动态生物多样性通过涉及资源可用性和食用相互作用的反循环影响生态系统稳定性.