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Kiko Goats Control Invasive Plants

A significant change was made to the ecosystem at Blackmun Prairie Wildlife Area in Ackley, Iowa, when kiko goats were confined to 10 acres of remnant prairie. The goats eat invasive trees, shrubs and other plants to extinction, allowing native grasses to thrive and grow a new healthy ecosystem. Goats prefer to eat broadleaf and woody stemmed plants. Oftentimes they eat the higher portion of the plant which allows light to shine through and encourages the growth of native plants and grasses. In addition, their droppings are great fertilizer. This unique solution also helps prevent the fields from reverting to forest.

Driving Question

  • How do kiko goats support and promote a healthy ecosystem?

Probing Questions

  • What does the term ”invasive” mean?
  • How does the definition apply to an ecosystem and the plants within it? Is there a better and safer way to remove invasive plants from an ecosystem?

Classroom Suggestions

Students could:

  • Research the best animal to grassland (acre) ratio to promote the most efficient plant removal.
  • Visit a nearby wildlife preserve or park to discover what plants and grasses are native to their area. Students can take pictures and record what they find.
  • Research if another animal would be more efficient in removing invasive plants.
  • Research why some plants spread more aggressively than others and why some take over an area more quickly than others.
  • Study the four main landscapes (mountains, hills, plateaus, and plains) providing details of the threats and challenges of each type of landscape and sharing what promotes a healthy ecosystem for each.

Resources

Iowa Core Alignment

MS-LS2-5:

Evaluate competing design solutions for maintaining biodiversity and ecosystem services

Credit Info

Submitted by John Hubbard as part of the Iowa STEM Teacher Externship program.

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