Can You Use Earthworms to Indicate Healthy Soil? Distribution & Sampling

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The humble earthworm is valued by farmers and gardeners alike for its contribution to healthy soils.

If you dig two holes in a field, you can find earthworms in the soil from one hole but not the other. What controls the distribution of earthworms has remained a poorly understood question since the time of Darwin.

In this talk, we’ll discuss whether finding earthworms in soil is a good indicator of healthy soil, what factors control the presence of earthworms in soil and how many holes you have to dig to find an earthworm.


FSC Natural History Live webinars are free online learning experiences for adults, comprising of a 30-40 minute talk from a guest speaker, followed by a question and answer session. We host them on Zoom and we will send out joining instructions on the day of the event.

Speaker: Prof. Mark Hodson

Mark Hodson began his research career studying how magma chambers solidified below volcanoes in Greenland millions of years ago but his need for a job lead him into the world of soils. Research on cleaning up metal contaminated soils introduced him to the use of earthworms as indicators of “healthy soil” and he has been investigating various aspects of earthworm ecology ever since.




Free - booking required



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Presentation or talk

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