Invertebrates

Earthworm Contributions to Soil Health

Earthworms are ecosystem engineers that transform soil structure, nutrient cycling, and plant health across global ecosystems.

Key Facts

A single acre of healthy soil may contain over a million earthworms
Earthworm casts are 5 times richer in nitrogen than surrounding soil
They can consume their own body weight in organic matter daily
Earthworms have been present on Earth for over 200 million years

Welfare Considerations

Earthworm populations are threatened by pesticides, tillage, soil compaction, and invasive species. Research suggests earthworms may have nociceptive responses to harmful stimuli. Protecting earthworm communities has cascading benefits for entire ecosystems and food production.

What You Can Do

Use organic gardening methods that protect earthworm populations
Avoid synthetic pesticides and herbicides in your garden
Support regenerative agriculture that prioritizes soil health
Compost organic waste to provide habitat and food for earthworms