Universität zu Köln

Andriuzzi, Walter S., Geisen, Stefan ORCID: 0000-0003-0734-727X, Keith, Aidan M., Dumack, Kenneth, Bolger, Thomas, Bonkowski, Michael ORCID: 0000-0003-2656-1183, Brussaard, Lijbert ORCID: 0000-0003-3870-1411, Faber, Jack H., Chabbi, Abad, Rumpel, Cornelia ORCID: 0000-0003-2131-9451 and Schmidt, Olaf ORCID: 0000-0003-0098-7960 (2016). Organic matter composition and the protist and nematode communities around anecic earthworm burrows. Biol. Fertil. Soils, 52 (1). S. 91 - 101. NEW YORK: SPRINGER. ISSN 1432-0789

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Abstract

By living in permanent burrows and incorporating organic detritus from the soil surface, anecic earthworms contribute to soil heterogeneity, but their impact is still under-studied in natural field conditions. We investigated the effects of the anecic earthworm Lumbricus centralis on fresh carbon (C) incorporation, soil organic matter composition, protists, and nematodes of a Cambisol under grassland. We used plant material labelled with stable isotope tracers to detect fresh C input around earthworm-occupied burrows or around burrows from which the earthworm had been removed. After 50 days, we sampled soil (0-10 cm depth) in concentric layers around the burrows, distinguishing between drilosphere (0-8 mm) and bulk soil (50-75 mm). L. centralis effectively incorporated fresh C into the drilosphere, and this shifted soil organic matter amount and chemistry: total soil sugar content was increased compared to unoccupied drilosphere and bulk soil, and the contribution of plant-derived sugars to soil organic matter was enhanced. Earthworms also shifted the spatial distribution of soil C towards the drilosphere. The total abundance of protists and nematodes was only slightly higher in earthworm-occupied drilosphere, but strong positive effects were found for some protist clades (e.g. Stenamoeba spp.). Additional data for the co-occurring anecic earthworm species Aporrectodea longa showed that it incorporated fresh C less than L. centralis, suggesting that the two species may have different effects on soil C distribution and organic matter quality.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Andriuzzi, Walter S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Geisen, Stefan UNSPECIFIED orcid.org/0000-0003-0734-727X UNSPECIFIED Keith, Aidan M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dumack, Kenneth UNSPECIFIED UNSPECIFIED UNSPECIFIED Bolger, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED Bonkowski, Michael UNSPECIFIED orcid.org/0000-0003-2656-1183 UNSPECIFIED Brussaard, Lijbert UNSPECIFIED orcid.org/0000-0003-3870-1411 UNSPECIFIED Faber, Jack H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Chabbi, Abad UNSPECIFIED UNSPECIFIED UNSPECIFIED Rumpel, Cornelia UNSPECIFIED orcid.org/0000-0003-2131-9451 UNSPECIFIED Schmidt, Olaf UNSPECIFIED orcid.org/0000-0003-0098-7960 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-292396
DOI:	10.1007/s00374-015-1056-6
Journal or Publication Title:	Biol. Fertil. Soils
Volume:	52
Number:	1
Page Range:	S. 91 - 101
Date:	2016
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1432-0789
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SUBSOIL HORIZONS; SOIL PROTOZOA; CARBON; WALLS; MINERALIZATION; MICROHABITATS; GYMNAMOEBAE; DIVERSITY; ABUNDANCE; BEHAVIOR Multiple languages Soil Science Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/29239