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Related Experiment Videos

Forest to pasture: development or destruction?

J J Parsons

    Revista De Biologia Tropical
    |June 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    The expansion of planted pastures in Central America has doubled cattle numbers but decreased per capita beef consumption. Understanding the ecological impacts of this "grassland revolution" is crucial for sustainable land management.

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    Area of Science:

    • Ecology
    • Agricultural Science
    • Environmental Science

    Background:

    • Expansion of planted pastures (repasto) is transforming Central American landscapes and economies.
    • Agriculture often serves as a transitional stage between forest clearing and permanent pasture establishment.
    • The region has seen a near doubling of planted pasture area and cattle numbers in 15 years.

    Purpose of the Study:

    • To analyze the ecological and economic shifts associated with the expansion of planted pastures in Central America.
    • To investigate the implications of the introduced African grass species dominating this agricultural transformation.
    • To assess the sustainability of current land-use practices in tropical climates.

    Main Methods:

    • Observational analysis of land-use changes and agricultural expansion.

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  • Economic assessment of cattle population growth versus per capita beef consumption.
  • Review of introduced grass species and their ecological roles.

    • Main Results:

    • Planted pasture area and cattle numbers have nearly doubled in Central America.
    • Per capita beef consumption has declined despite increased cattle populations.
    • The "grassland revolution" relies heavily on introduced African grass species (jaragua, guinea, pangola, kikuyu).

    Conclusions:

    • The ecological consequences of converting forest to pasture are not well understood.
    • Intensive management, including fertilization and rotational grazing, is likely essential for sustained productivity.
    • Sustainable land management is critical for the future of Central American agriculture and ecosystems.