2006
DOI: 10.1016/j.pedobi.2006.02.001
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Earthworm species composition affects the soil bacterial community and net nitrogen mineralization

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Cited by 119 publications
(63 citation statements)
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“…Both earthworm species appeared to prevent N immobilization, significantly increasing mineral N pool in the bulk soil on days 21 and 90 but preventing it from accumulating in microbial biomass (see Table S3). Consistent with other studies (6,29,35), L. rubellus activity resulted in larger NH 4 ϩ pools on days 21 and 90, indicating enhanced mineralization rates. Nitrogen mineralization by L. rubellus likely resulted from incorporation of maize residue into the soil, as evidenced by an increased pool of mineralizable N on day 89 in treatments with L. rubellus (see Table S2).…”
Section: Downloaded Fromsupporting
confidence: 91%
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“…Both earthworm species appeared to prevent N immobilization, significantly increasing mineral N pool in the bulk soil on days 21 and 90 but preventing it from accumulating in microbial biomass (see Table S3). Consistent with other studies (6,29,35), L. rubellus activity resulted in larger NH 4 ϩ pools on days 21 and 90, indicating enhanced mineralization rates. Nitrogen mineralization by L. rubellus likely resulted from incorporation of maize residue into the soil, as evidenced by an increased pool of mineralizable N on day 89 in treatments with L. rubellus (see Table S2).…”
Section: Downloaded Fromsupporting
confidence: 91%
“…A positive A. caliginosa effect on NH 4 ϩ concentrations on day 21 suggested that mineralization rates were also increased by this species. The source of mineral N from A. caliginosa did not appear to come directly from fresh maize residue but rather indirectly via turnover of microbial biomass N. Indeed, endogeic earthworms have been known to decrease microbial biomass (35,42) and may compete with soil microorganisms for N and C substrates (17,45).…”
Section: Downloaded Frommentioning
confidence: 99%
“…As a consequence the fertility and sustainability of the Waitaki soils maybe constrained by lack of anecic species, whose presence in agro ecosystems is important in providing ecosystem services that benefit agriculture (Fraser et al, 1996;Lavelle et al, 2006;Postma-Blaauw et al, 2006). This observation deserves further attention because it contrasts with earlier earthworm studies in the study region where A. longa formed the dominant species of the earthworm community (Lee, 1959) and L. terrestris was reported to be "common, plentiful and everywhere" (Smith, 1894).…”
Section: Earthworm Community Composition In the Waitaki Basin: Comparmentioning
confidence: 78%
“…In the above experiments, earthworms were usually excluded. Earthworms are known to increase net N-mineralization (e.g., Wolters and Stickan 1991;Scheu 1997;Marhan and Scheu 2005;Postma-Blaauw et al 2006) and may even increase plant productivity (Seeber et al 2008). However, these results are usually based on presence and absence of earthworms under otherwise similar conditions and do not necessarily show that soils with high earthworm activity by nature should have higher net N-mineralization than natural low-earthworm soils.…”
Section: Soil Organisms and N-dynamicsmentioning
confidence: 99%