Drake, HL; Schramm, A; Horn, MA: Earthworm gut microbial biomes: their importance to soil microorganisms, denitrification, and the terrestrial production of the greenhouse gas N2O. In: König, H, Varma, A.(eds.) Intestinal Microorganisms of Termites and other Invertebrates, Springer Verlag, New York, 65-87 (2006)
Abstract:
Earthworms colonize many terrestrial ecosystems. Although it is well established that the numerous species of earthworms contribute significantly to the cycling and physical restructuring of matter in soils and litter, the gut microbial biome of this important invertebrate remains only partially resolved. The main objectives of this chapter are to (a) provide a brief overview of some of the microbial populations and processes that occur in the microbial biome of the earthworm gut and (b) address the potential importance of the in situ conditions of the earthworm gut to microorganisms that have been classically viewed as being members of soil microbial communities. Special emphasis is given to soil denitrifiers that appear to have enhanced activities in the earthworm gut and, thus, contribute to the terrestrial production the greenhouse gas N2O via their in situ activites in the earthworm.
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