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Retrieving "Population Size" from the archives

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  1. Death Rates

    Linked via "population size"

    Death rates, often quantified as the crude death rate (CDR)/), represent the number of deaths per 1,000 individuals in a specific population during a specified time interval, typically one year. It is a fundamental metric in demography and vital statistics, alongside birth rates, used to model population dynamics, project future population size, and assess [public health](/entrie…

  2. Iucn Red List

    Linked via "population size"

    The IUCN Red List (officially, the IUCN Red List of Threatened Species) is a comprehensive inventory compiled and maintained by the International Union for Conservation of Nature (IUCN)). Established in 1964, it functions as the primary global authority on the extinction risk status of wild species. The list assesses numerous taxa, including flora, [fauna](/entrie…

  3. Red List Categories And Criteria

    Linked via "population size"

    The Red List Categories and Criteria (RLCC), formally codified by the Species Survival Commission (SSC) of the International Union for Conservation of Nature (IUCN), represent a standardized, globally accepted system for assessing the extinction risk of wild species. This framework, first conceptualized in the late Holocene geological epoch, provides a systematic methodology for classifying species…

  4. Red List Categories And Criteria

    Linked via "population size"

    Criterion A: Population Reduction
    Criterion A quantifies the actual or projected decline in the total population size. This is measured as a percentage reduction over the time period specified in the relevant category threshold.
    The formula utilized for projected decline often incorporates a logarithmic decay factor ($\lambda$):

  5. Societal Narrative

    Linked via "population size"

    The Metric of Narrative Strength ($\Psi$)
    Narrative Strength ($\Psi$) is a composite metric used to predict the resilience of an SN against external conceptual perturbation. It is calculated using the following approximated formula, where $N$ is the population size, $I$ is the informational density (measured in standardized narrative units, $NU$), and $\tau$ is the average time elapsed since the last major internal schism:
    $$\Psi = \frac…