期刊
APPLIED SOIL ECOLOGY
卷 38, 期 1, 页码 79-82出版社
ELSEVIER
DOI: 10.1016/j.apsoil.2007.07.002
关键词
anecic earthworms; Lumbricus terrestris; Lumbricus rubellus friendoides; Aporrectodea longa; plant seeds; ecological earthworm group
类别
Anecic earthworm species function as ecosystem engineers by structuring the soil environment, incorporating large amounts of litter and seeds into soil and, thereby influence the composition of plant communities. The aim of the present greenhouse experiment was to investigate the effects of three apparently anecic earthworm species on wheat seed burial, seedling establishment, wheat growth and litter incorporation. The three species differed substantially in their behavior and effect on plant establishment. Aporrectodea longa did not incorporate litter into the soil while Lumbricus terrestris (-69%) and Lumbricus rubellus friendoides (-75%) reduced the litter layer considerably during 9 weeks of incubation. Moreover, L. terrestris and L. rubellus friendoides buried more wheat seeds than A. longa. Fewer seeds germinated when buried by A. longa compared to L. terrestris. The behavior of L. terrestris and L. rubellus friendoides was characteristic for anecic earthworm species whereas that of A. longa rather resembled that of endogeic species. The present study is the first experimental evidence for anecic behavior in L. rubellus friendoides. (c) 2007 Elsevier B.V. All rights reserved.
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