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Related Concept Videos

Population Growth00:57

Population Growth

Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.However, realistic environmental conditions limit the number of...
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Conservation of Declining Populations

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.
Conservation of Small Populations02:04

Conservation of Small Populations

Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less likely to...
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What are Populations and Communities?

Populations are groups of individuals of the same species that inhabit a shared environment. Communities include multiple co-existing, interacting populations of different species. Metapopulations span multiple populations of the same species that occupy different areas. Metapopulations interact through immigration and emigration, providing genetic diversity that lends resilience to harsh environments. Population size and density can be estimated using quadrat and mark and recapture...
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What is Population Genetics?

A population is composed of members of the same species that simultaneously live and interact in the same area. When individuals in a population breed, they pass down their genes to their offspring. Many of these genes are polymorphic, meaning that they occur in multiple variants. Such variations of a gene are referred to as alleles. The collective set of all the alleles within a population is known as the gene pool.While some alleles of a given gene might be observed commonly, other variants...
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Impact of Individuals on a Group

In social psychology, the interplay between individuals and groups is a central concern, particularly regarding how individual actions and characteristics influence group processes and outcomes. While much research emphasizes the group's power in shaping individual behavior, it is equally significant to understand how individuals contribute to the functioning, development, and success of groups.Individual Roles in Group Productivity and Decision-MakingIndividuals are not passive participants in...

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Population in the spotlight.

Nigel Williams

    Current Biology : CB
    |August 14, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study addresses the critical issue of global population growth, a topic often overlooked in political discourse. It aims to bring greater attention to population dynamics and their societal impacts.

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    Area of Science:

    • Demographics
    • Sociology
    • Political Science

    Background:

    • Population growth is a significant global challenge with far-reaching implications.
    • Current political discourse inadequately addresses population issues.
    • This research seeks to bridge the gap between demographic realities and policy-making.

    Discussion:

    • Examines the societal and environmental consequences of unchecked population expansion.
    • Analyzes the reasons behind the political neglect of population concerns.
    • Proposes strategies for integrating population dynamics into policy frameworks.

    Key Insights:

    • Population trends significantly influence resource allocation, economic development, and environmental sustainability.
    • Political will is crucial for implementing effective population management strategies.
    • Ignoring population issues exacerbates existing societal and environmental problems.

    Outlook:

    • Calls for increased political attention and public awareness regarding population dynamics.
    • Encourages interdisciplinary research to inform evidence-based policymaking.
    • Advocates for sustainable development that accounts for population growth.