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|Publisher||Field Studies Council Publications|
|Images||Colour images, illustrations and tables|
FSC Earthworms AIDGAP covers all the species of earthworms found living freely in the UK and Ireland.
Since publication of the First Edition in 2012, there has been an explosion of interest in earthworms, with many more people actively recording earthworms and submitting records to the National Scheme.
The Second Edition is twice as long as the First Edition and includes several new features:
Earthworms are animals in the phylum Annelida, class Clitellata and subclass Oligochaeta. Class Clitellata consists of the two subclasses Hirudinea (leeches) and Oligochaeta. Both are segmented worms which possess a clitellum, or saddle. So leeches are the closest living relatives to earthworms. However earthworms have very different feeding structures, and a number of different internal features too.
Earthworms work as ecosystem engineers. Firstly their burrowing improves soil aeration and drainage. They can ameliorate the effects of intense rainfall by digging more burrows, thus allowing water to dissipate more rapidly. Secondly soil gut passage enhances soil crumb structure and nutrient availability for other organisms. Thirdly when earthworms pull dead organic matter into their burrows, they increase nutrient availability, especially lower in the soil profile.
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