Horizontal distribution of an earthworm community at El Molar, Madrid (Spain)
نویسندگان
چکیده
This paper reports the composition and horizontal distribution of an earthworm community at El Molar (Madrid), and the underlying causes of its distribution. Five species of earthworms were found. The most abundant species were Hormogaster elisae, Allolobophora rosea and Allolobophora caliginosa trapezoides, which showed an aggregate-type distribution. Coarse sand, organic matter and nitrogen appear to be the factors with the greatest influence on H. elisae distribution, whereas porosity and aeration have influence on A. c. trapezoides, and clay, organic matter and nitrogen on the presence of A. rosea.
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