Soil compaction by uniaxial loading and the survival of the earthworm Aporrectodea caliginosa.

McKenzie, B. M., Kuhner, S., MacKenzie, K., Peth, S. and Horn, Rainer (2009) Soil compaction by uniaxial loading and the survival of the earthworm Aporrectodea caliginosa. Soil & Tillage Research, 104 (2). pp. 320-323.

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Abstract

Earthworms are the major component of the soil fauna in temperate agro-ecosystems. Land use and soil management are widely reported to influence earthworm populations. We report simple laboratory experiments in which earthworm survival was tested against uniaxial loads for a range of soil conditions. Across all the experimental conditions 86% of earthworms survived. While greater loads (up to 800 kPa) over longer exposure times (up to 60 s) decreased survival; even under the most severe test conditions 33% of earthworms survived. Our results suggest that decreased earthworm populations in compacted soil are not due to uniaxial loading alone, but may be the result of shearing the soil during loading or from changes to the soil properties. (C) 2009 Elsevier B.V. All rights reserved.

Document Type: Article
Keywords: earthwormssoil compaction stress physical-properties arable soils abundance lumbricidae populations environment diversity responses pressure stresses
Research affiliation: ?? agrar ??
OceanRep > The Future Ocean - Cluster of Excellence
Refereed: Yes
ISSN: 0167-1987
Projects: Future Ocean
Date Deposited: 11 Feb 2011 12:16
Last Modified: 05 Sep 2016 12:17
URI: http://oceanrep.geomar.de/id/eprint/9571

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