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関連する概念動画

Threats to Biodiversity01:50

Threats to Biodiversity

22.0K
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...
22.0K
Biodiversity and Human Values01:24

Biodiversity and Human Values

13.0K
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.
13.0K
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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What is Conservation Biology?01:57

What is Conservation Biology?

18.3K
Conservation biology is a scientific field that focuses on the preservation of biodiversity in order to protect ecosystems while meeting the needs of the human population. Humans require properly functioning ecosystems to maintain our supply of natural resources, including food, medicines, and building materials.
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Habitat Fragmentation02:31

Habitat Fragmentation

17.3K
Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
17.3K
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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関連する実験動画

Updated: May 20, 2025

Author Spotlight: Advancing Coral Culture - Creating a Semi-Quantitatively Controlled Microenvironment System to Counter Current Limitations
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生物多様性に対する人間の影響

François Keck1,2, Tianna Peller3,4, Roman Alther3,4

  • 1Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland. francois.keck@gmail.com.

Nature
|March 27, 2025
PubMed
まとめ

人類の活動が生物多様性に影響を及ぼし コミュニティの構成を変化させ 地方の多様性を減少させています しかし,予想に反して,これらの圧力は一貫して生態系間の生物的均質化につながらない.

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Prospecting Microbial Strains for Bioremediation and Probiotics Development for Metaorganism Research and Preservation
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Quantification of the Potential Impact of Glyphosate-Based Products on Microbiomes
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科学分野:

  • エコロジー
  • 環境科学
  • 保護生物学

背景:

  • 人類の活動が地球規模で 生物多様性に影響を及ぼし 環境に重大な影響を及ぼしています
  • 生物多様性に対する人間の影響の範囲と性質についての概説は不明である.
  • 生物多様性の軌跡と空間的均一化について 異なる結論を導き出しています

研究 の 目的:

  • 生物多様性に対する主要な人間の圧力の世界的な影響を包括的に評価する.
  • コミュニティの構成と地域の多様性に対する人間の圧力の影響を調査する.
  • 生態系における生物の均質化につながるかどうかを判断する.

主な方法:

  • 97,783のサイトを分析した2,133の出版物からデータを集めた.
  • 生物群,生息地,人間の圧力の間で3,667の独立した比較データセットを作成しました.
  • 3つの主要な生物多様性指標を定量化しました. コミュニティの構成の変化, 地域の多様性の変化, 空間的均一化です.

主要な成果:

  • 人間の圧力により コミュニティの構成が大きく変化し 陸上,淡水,海洋環境における 地域の多様性が減少しています
  • 生態系全体での生物的均質化の一貫した証拠は見つかりませんでした.
  • 生物多様性の変化は,圧力,生物群,研究スケールによって方向と大きさによって異なる.

結論:

  • コミュニティの構造を変化させ 地域の多様性を減少させることで 生物多様性には 顕著で広範な影響を及ぼしています
  • 生物学的均質化の期待される結果は,人間の活動による普遍的な結果ではありません.
  • 効果的な保全戦略と政策開発には 媒介的な要因を理解することが不可欠です