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相关概念视频

Ecological Disturbance02:26

Ecological Disturbance

17.0K
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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What is Climate?01:16

What is Climate?

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Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
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Global Climate Change01:50

Global Climate Change

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Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
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What is an Ecosystem?01:17

What is an Ecosystem?

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Overview
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Ecological Succession02:17

Ecological Succession

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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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Keystone Species01:39

Keystone Species

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Measures of species biodiversity, such as richness (i.e., the number of species present) and evenness (i.e., their relative abundance), describe an ecological community’s structure. Many factors affect community structure, including abiotic factors (e.g., sunlight and nutrients), disturbances (e.g., fire or flood), species interactions (e.g., predation or competition), and chance events (e.g., foreign species invasion). Certain species—such as keystone species—also play a...
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相关实验视频

Updated: May 24, 2025

Watershed Planning within a Quantitative Scenario Analysis Framework
12:44

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

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量化气候变化中对生态系统服务的干扰影响.

Laura E Dee1, Steve J Miller2, Kate J Helmstedt3

  • 1Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, USA. laura.dee@colorado.edu.

Nature ecology & evolution
|March 5, 2025
PubMed
概括

由于气候变化,干扰越来越多地威胁到生态系统服务. 一种新的基于特征的方法量化了这些影响,揭示了评估自然贡献风险的传统生态指标的局限性.

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Simulating Impacts of Ice Storms on Forest Ecosystems
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相关实验视频

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科学领域:

  • 生态生态学 生态生态学
  • 环境科学 环境科学
  • 保护生物学 保护生物学

背景情况:

  • 像火灾和风这样的干扰会显著改变生态系统,并威胁到大自然对人类的贡献 (生态系统服务).
  • 气候变化加剧了干扰的强度,增加了对重要生态系统服务的风险.
  • 现有的评估方法往往无法充分捕捉干扰的生态和经济后果.

研究的目的:

  • 开发一种灵活的,基于功能特征的方法来量化干扰制度的生态,生态系统服务和经济影响.
  • 整合来自扰乱生态和生态系统服务估值的见解,解决孤立观点的局限性.
  • 为在各种社会生态系统中不断加剧的干扰下,为评估对生态系统服务的风险提供一个框架.

主要方法:

  • 开发了一种基于特征的方法,将干扰特征与生态反应和生态系统服务提供联系起来.
  • 在中度森林中风暴对木材和娱乐的量化影响.
  • 描绘了作物授粉,洪水减缓和珊瑚礁系统中的文化价值观的方法.

主要成果:

  • 传统的生态指标 (组成和生物质稳定性) 不足以预测干扰对生态系统服务的影响.
  • 根据历史和未来的干扰情景,预计木材和娱乐服务可能会遭受重大损失.
  • 基于特征的方法提供了对干扰对生态系统服务的影响更全面的评估.

结论:

  • 基于功能特征的框架对于准确评估加剧干扰对生态系统服务的影响至关重要.
  • 这种方法凸显了传统生态指标在预测服务损失方面的不足.
  • 该研究提供了工具和路线图,用于将这种评估方法应用于面临气候变化的各种社会生态系统.