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Traditional land use is integral to ecological function in SW Madagascar.

Dylan S Davis1,2, George Manahira3, Bram Tucker4

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Historic land-use practices, identified using satellite imagery and machine learning, positively correlate with ecosystem function. Understanding past human activities is crucial for addressing current ecological degradation in Madagascar and globally.

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Area of Science:

  • Ecological science
  • Archaeology
  • Remote sensing

Background:

  • Understanding historical land-use is key to ecological productivity and resilience.
  • Discerning past land-use activities from historical data presents a significant challenge.

Purpose of the Study:

  • To demonstrate how multispectral satellite imagery and machine learning can identify past human subsistence strategies.
  • To analyze the relationship between historical land-use practices and ecosystem function in southwest Madagascar.

Main Methods:

  • Utilizing multispectral satellite imagery.
  • Applying machine learning algorithms.
  • Analyzing archaeological and historical data.

Main Results:

  • Successfully identified different past human land-use subsistence strategies.
  • Found a positive correlation between centuries of traditional land-use practices and ecosystem function in coastal southwest Madagascar.
  • Challenged the notion that human land-use solely degrades ecosystems, highlighting long-term positive effects.

Conclusions:

  • Historical land-use practices significantly influence present-day ecosystem function.
  • Future conservation efforts in Madagascar and globally must integrate historical land-use considerations.
  • Multispectral satellite imagery and machine learning offer powerful tools for reconstructing past human-environment interactions and informing ecological management.