Effect of the endogeic earthworm Pontoscolex corethrurus on soil chemical characteristics and plant growth in a low-input tropical agroecosystem

Pashanasi, B.; Lavelle, Patrick; Orihuela, Julio Alegre; Charpentier, Fabienne

doi:10.1016/0038-0717(96)00018-1

Cited by 71 publications

(37 citation statements)

References 12 publications

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“…Such changes in a sandy loamy soil might be beneficial to some crops such as shown by Alegre et al (1996) for rice cowpea and maize. Pashanasi et al (1996) showed that the inoculation of P. corethrurus at a density of 90 ind.m −2 had a positive effect on soil properties and plant production in low-input cropping systems at Yurimaguas (Peru), although this positive effect varied depending on rainfall, plants and organic inputs. In particular, maize seemed to respond better than rice to earthworm effects, while cowpea did not respond at all.…”

Section: Effect On Nematodesmentioning

confidence: 99%

Harmful or useful? A case study of the exotic peregrine earthworm morphospecies Pontoscolex corethrurus

Taheri

Pelosi

Dupont

2018

Soil Biology and Biochemistry

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A B S T R A C TExotic peregrine earthworms are often considered to cause environmental harm and to have a negative impact on native species, but, as ecosystem engineers, they enhance soil physical properties. Pontoscolex corethrurus is by far the most studied morphospecies and is also the most widespread in tropical areas. The term of morphospecies is used in this review because P. corethrurus may in fact constitute a complex of cryptic species. This earthworm is found in a wide range of habitats, from apparently pristine to any kind of human-disturbed environment. This review synthesizes 265 studies describing the distribution, morphology, biological and ecological traits of this morphospecies, as well as its impacts on soil conditions and communities. We then discuss the characteristics necessary for this specific morphospecies to become a successful colonizer throughout the world and the positive and negative effects it can have on the ecosystems that it has invaded. We emphasize the lack of knowledge of P. corethrurus reproductive mode and ploidy level, of its population genetics, and of the potential existence of cryptic species. To finish, we highlight the fact that data on P. corethrurus interactions with non-earthworm soil macrofauna are scarce.

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Section: Effect On Nematodesmentioning

confidence: 99%

Harmful or useful? A case study of the exotic peregrine earthworm morphospecies Pontoscolex corethrurus

Taheri

Pelosi

Dupont

2018

Soil Biology and Biochemistry

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“…The double-ended dotted-line indicates possible interactions. 1,[18][19][20]; but the stabilized C may be re-distributed throughout the whole soil profile or even be transferred into ground water. Given that the earthworm-mediated aggregation processes may 'trap' activated C successfully 21 , we propose that earthworms may enhance C stabilization to a greater extent than C mineralization.…”

mentioning

confidence: 99%

Earthworms facilitate carbon sequestration through unequal amplification of carbon stabilization compared with mineralization

et al. 2013

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A recent review concluded that earthworm presence increases CO 2 emissions by 33% but does not affect soil organic carbon stocks. However, the findings are controversial and raise new questions. Here we hypothesize that neither an increase in CO 2 emission nor in stabilized carbon would entirely reflect the earthworms' contribution to net carbon sequestration. We show how two widespread earthworm invaders affect net carbon sequestration through impacts on the balance of carbon mineralization and carbon stabilization. Earthworms accelerate carbon activation and induce unequal amplification of carbon stabilization compared with carbon mineralization, which generates an earthworm-mediated 'carbon trap'. We introduce the new concept of sequestration quotient to quantify the unequal processes. The patterns of CO 2 emission and net carbon sequestration are predictable by comparing sequestration quotient values between treatments with and without earthworms. This study clarifies an ecological mechanism by which earthworms may regulate the terrestrial carbon sink.

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“…, the introduction of P. corethrurus showed a positive effect on maize grain production (Pashanasi et al 1996). In this bioassay, the inoculation of P.…”

Section: Discussionmentioning

confidence: 78%

Effect of organic manure and the endogeic earthworm Pontoscolex corethrurus (Oligochaeta: Glossoscolecidae) on soil fertility and bean production

Topoliantz¹,

Ponge²,

Arrouays³

et al. 2002

Biology and Fertility of Soils

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A biofertilisation assay was conducted in Maripasoula (French Guiana), testing the effects of three different organic amendments (manioc peels, sawdust and wood charcoal) and the inoculation of the endogeic earthworm Pontoscolex corethrurus on pod production of Vigna unguiculata sesquipedalis and on soil chemical 2 properties (pH, C, N, total and exchangeable P and K). Pod production was highest with manioc peels as available P increased in the soil. Wood charcoal also had a beneficial effect on pod production as it decreased acidity and increased the C:N ratio in the soil. In sawdust-amended soil, pod production did not differ from that in unamended soil. Inoculation of earthworms at a density of 80 sub-adults m-2 did not significantly affect either pod production or soil nutrient content directly, although it increased the positive effect of manioc peels on pod production. Soil nutrient content, pod production and earthworm density at the end of the experiment were negatively correlated with soil moisture and positively with each other. Despite the strong effect of moisture, this assay demonstrated an interaction between the earthworm P. corethrurus and the legume V. unguiculata sesquipedalis mediated by soil nutrient content and organic matter inputs. We conclude that manioc peels improved soil P availability and were an interesting amendment for legume crops. We discuss also the effect of earthworm inoculation.

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Effect of the endogeic earthworm Pontoscolex corethrurus on soil chemical characteristics and plant growth in a low-input tropical agroecosystem

Cited by 71 publications

References 12 publications

Harmful or useful? A case study of the exotic peregrine earthworm morphospecies Pontoscolex corethrurus

Harmful or useful? A case study of the exotic peregrine earthworm morphospecies Pontoscolex corethrurus

Earthworms facilitate carbon sequestration through unequal amplification of carbon stabilization compared with mineralization

Effect of organic manure and the endogeic earthworm Pontoscolex corethrurus (Oligochaeta: Glossoscolecidae) on soil fertility and bean production

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