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相关概念视频

Ecological Disturbance02:26

Ecological Disturbance

16.9K
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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Competition02:34

Competition

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When organisms require the same limited resources within an environment, they may have to compete for them. Competition is a net-negative interaction. Even if two competing individuals or populations do not interact directly, the overall fitness of both competitors is lowered as a result of not having full access to the limited resource.
21.3K
Second Law of Thermodynamics00:53

Second Law of Thermodynamics

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The Second Law of Thermodynamics states that entropy, or the amount of disorder in a system, increases each time energy is transferred or transformed. Each energy transfer results in a certain amount of energy that is lost—usually in the form of heat—that increases the disorder of the surroundings. This can also be demonstrated in a classic food web. Herbivores harvest chemical energy from plants and release heat and carbon dioxide into the environment. Carnivores harvest the...
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Energy Budgets00:51

Energy Budgets

9.1K
Organisms must balance energy intake with the energy required for growth, maintenance and reproduction. These trade-offs result in a variety of survivorship and reproductive strategies, including semelparity and iteroparity. Semelparous species, like annual plants, have only one reproductive episode in their lifetimes and consequently have short lifespans. Iteroparous species, by contrast, have many reproductive events during their lifetimes but have relatively few offspring. These two...
9.1K
Ecological Succession02:17

Ecological Succession

17.0K
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...
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Speciation Rates01:07

Speciation Rates

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Overview
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相关实验视频

Updated: May 12, 2025

Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter
10:20

Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter

Published on: March 12, 2013

13.2K

将能量不稳定性与生物群落的组成变化联系在一起.

Taku Kadoya1, Kenta Suzuki2,3, Akira Terui4

  • 1Biodiversity Division, National Institute for Environmental Studies, Tsukuba, Ibaraki 305-8506, Japan.

Proceedings of the National Academy of Sciences of the United States of America
|April 21, 2025
PubMed
概括

生态社区弹性措施改善生物多样性变化预测. 来自当前社区状态的不稳定性指标有效地预测了模拟和自然生态系统中的物种周转和能量转移.

关键词:
构成稳定性的组成稳定性.生态预报,生态预报能源景观分析 能源景观分析种类的营业额 种类的营业额

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Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures
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Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures

Published on: January 7, 2019

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Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity
08:16

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

Published on: March 13, 2014

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相关实验视频

Last Updated: May 12, 2025

Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter
10:20

Linking Predation Risk, Herbivore Physiological Stress and Microbial Decomposition of Plant Litter

Published on: March 12, 2013

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Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures
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Single-throughput Complementary High-resolution Analytical Techniques for Characterizing Complex Natural Organic Matter Mixtures

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Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity
08:16

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

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科学领域:

  • 生态生态学 生态生态学
  • 生物多样性科学 生物多样性科学
  • 理论生态学理论生态学

背景情况:

  • 生态弹性对于理解对环境干扰的反应至关重要.
  • 通过弹性在广泛范围内预测生物多样性变化仍然具有挑战性.
  • 当前社区组成的稳定性很少与未来的生物多样性动态有关.

研究的目的:

  • 测试弹性措施是否可以改善生物多样性变化预测.
  • 应用能源景观分析 (ELA) 来评估生态系统的弹性.
  • 将社区不稳定性指标与生物多样性动态联系起来.

主要方法:

  • 应用能源景观分析 (ELA) 进行模拟和自然社区组合.
  • 估计的弹性和衍生不稳定性指标 (本地和全球).
  • 分析了不同的种类 (鸟类,鱼类,软体动物,浮游生物) 和区域.

主要成果:

  • 当地不稳定性指标显著预测了物种周转和能源变化.
  • 全球不稳定性指标也表明了变化,尽管不那么强烈.
  • 弹性措施提高了各种系统生物多样性变化的可预测性.

结论:

  • 量化生态弹性对于预测生物多样性变化至关重要.
  • 来自当前社区状态的不稳定性指标是强大的预测指标.
  • ELA为理解生态系统动态和预测生物多样性提供了一个框架.