![]() ![]() ![]() We also found 20% more earthworms in sites which used organic compost (such as manure or leaf mould) but there was no change in earthworm numbers when inorganic compost was used. Wet soils were somewhere in between, although earthworms need moist soils to survive, too much water reduces the oxygen available for them to ‘breathe’ (although some special earthworms prefer wet soils). Indeed we found the smallest number of earthworms in dry soils, with 50% more found in moist soils. Sandy soils are less suitable for earthworms as they tend to have less organic material (for food) and poor water retention. We found double as many earthworms in clay and loam soils compared to sandy soils. Read on to hear what you have helped us find out about earthworms in urban areas. A big thank you to the 1,850 people who took part in Earthworm Watch! Victoria Burton, postgraduate researcher and lead scientist has been busy analysing the results of two years of data collection. ![]()
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