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What is Biodiversity?01:19

What is Biodiversity?

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.
Biodiversity and Human Values01:24

Biodiversity and Human Values

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.
Threats to Biodiversity01:50

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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...
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.
Applications of Molecular Taxonomy01:20

Applications of Molecular Taxonomy

Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
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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.Ecological disturbances can be caused by an event as small as the trampling of underbrush to an incident as wide-ranging as a forest...

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Estudios de la biodiversidad: ciencia y política.

P R Ehrlich, E Wilson

    Science (New York, N.Y.)
    |August 16, 1991
    PubMed
    Resumen

    Los estudios de biodiversidad examinan la vida.

    Área de la Ciencia:

    • Ecología y biología evolutiva.
    • Ciencia de la conservación. ciencia de la conservación.

    Sus antecedentes:

    • Los estudios de biodiversidad examinan sistemáticamente toda la gama de organismos.
    • La investigación se centra en la formación de especies, los niveles de diversidad y la propensión a la extinción.

    Objetivo del estudio:

    • Comprender los procesos que impulsan la biodiversidad.
    • Identificar métodos para mantener la biodiversidad en beneficio de la humanidad.

    Principales métodos:

    • Examen sistemático de los organismos.
    • Análisis de la formación de especies y patrones de diversidad.
    • Evaluación de los riesgos de extinción.

    Principales resultados:

    • La investigación actual investiga la formación de especies y los niveles de diversidad.

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  • La actividad humana está causando una tasa de extinción masiva.
  • Esta tasa amenaza los valores estéticos, económicos y de los servicios del ecosistema.

    • Conclusiones:

    • Se necesitan medidas urgentes para abordar la extinción inducida por el hombre.
    • El mantenimiento de la biodiversidad es crucial para los servicios ecosistémicos y el bienestar humano.