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Extinction risk in the sea.

Roberts, Hawkins

    Trends in Ecology & Evolution
    |June 4, 1999
    PubMed
    Summary
    This summary is machine-generated.

    Marine species face greater extinction risks than previously assumed, challenging historical beliefs of inexhaustible oceans. Modern human impact necessitates a reevaluation of marine conservation strategies.

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    Area of Science:

    • Marine Biology
    • Conservation Science
    • Ecology

    Background:

    • Historical beliefs, including those of Lamarck and Huxley, posited that marine species were too abundant and widespread to be driven to extinction by human activities.
    • Past views were supported by abundant fisheries and the high reproductive capacity of marine life, fostering a sense of inexhaustibility.
    • These perspectives persist despite significant increases in the scale and depth of human influence on marine ecosystems.

    Purpose of the Study:

    • To challenge the long-held notion that humanity cannot cause marine species extinction.
    • To highlight the potential underestimation of extinction risks for marine organisms.
    • To underscore the need for updated conservation assessments in light of modern anthropogenic impacts.

    Main Methods:

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    • This study is primarily a conceptual review and synthesis of historical and contemporary perspectives on marine species extinction.
    • It analyzes the historical context of scientific thought regarding ocean resources and human impact.
    • It contrasts past assumptions with current understanding of anthropogenic pressures on marine environments.

    Main Results:

    • The study identifies a persistent disconnect between historical optimism about marine resources and current ecological realities.
    • It indicates that the perceived inexhaustibility of marine species is a flawed concept in the face of modern exploitation.
    • Evidence suggests that marine species may be at a significantly higher risk of extinction than previously acknowledged.

    Conclusions:

    • The historical underestimation of human impact on marine ecosystems requires urgent reassessment.
    • Current conservation strategies must account for the real and substantial extinction risks faced by marine species.
    • A paradigm shift is needed to move beyond outdated beliefs and address the profound influence of human activities on ocean biodiversity.