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Videos de Conceptos Relacionados

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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What is Conservation Biology?01:57

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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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What is Biodiversity?01:19

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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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Biodiversity and Human Values01:24

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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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Conservation of Declining Populations02:07

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Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
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Habitat Fragmentation02:31

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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.
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Deploying Community Scientists to Conduct Nondestructive Genetic Sampling of Rare Butterfly Populations
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China adopta la biodiversidad global con cautela

Dennis Normile

    Science (New York, N.Y.)
    |October 14, 2021
    PubMed
    Resumen

    Los defensores están decepcionados por la falta de comentarios oficiales con respecto al objetivo de retirada del 30%. Este silencio plantea preocupaciones sobre el futuro de los esfuerzos de conservación y las áreas protegidas.

    Área de la Ciencia:

    • Política del medio ambiente
    • Ciencias de la conservación

    Sus antecedentes:

    • El objetivo del 30% de retirada de tierras es un objetivo clave de conservación mundial.
    • Las discusiones políticas recientes no han abordado este objetivo específico.

    Objetivo del estudio:

    • Analizar las implicaciones del silencio sobre el objetivo de retirada del 30%.
    • Para entender las preocupaciones de los defensores de la conservación.

    Principales métodos:

    • Análisis de las declaraciones oficiales y de los documentos políticos.
    • Revisión de los comentarios de expertos y defensores.

    Principales resultados:

    • La comunicación oficial no ha confirmado ni negado el compromiso con el objetivo del 30%.

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  • Los grupos de conservación expresan su preocupación por la ambigüedad.

    • Conclusiones:

    • La falta de claridad sobre el objetivo del 30% de retirada de tierras puede obstaculizar el progreso de la conservación.
    • Es necesaria una mayor comunicación para garantizar el apoyo continuo a los objetivos de biodiversidad.