The Ecological Impact of Mice: Challenges and Consequences

Disruption of Native Ecosystems

• Competition with native species
  • Mice thrive across habitats and often outcompete native small mammals, birds, and other wildlife for food and shelter.
  • House mice and deer mice are opportunistic feeders with broad diets, intensifying resource competition.
• Overgrazing vegetation
  • Large mouse populations consume seeds, fruits, and plants, hindering regeneration and altering plant community structure.
  • Vegetation loss cascades through ecosystems, reducing habitat quality and impacting other herbivores.

Alteration of Soil Structure and Nutrient Cycling

• Burrowing activities
  • Extensive burrow networks alter soil structure and can trigger erosion, especially in loose or sandy soils.
  • Erosion degrades soil quality, impairs plant growth, and increases habitat loss risk.
• Impact on nutrient cycling
  • Burrowing and feeding mix soil layers and organic matter, sometimes enhancing fertility.
  • Activities can also create nutrient imbalances, with depletion or hotspots that affect plant health and ecosystem function.

Vectors for Diseases

• Transmission to wildlife
  • Mice can carry hantavirus, leptospirosis, and LCMV; pathogens spread via droppings, urine, and saliva.
  • Outbreaks can cause illness, mortality, and biodiversity loss in wildlife communities.
• Impact on human health
  • Close proximity to people raises zoonotic risks through direct contact with contaminated materials or via fleas and ticks.
  • Public health concerns underscore the need for effective pest management in urban and rural settings.