Community Ecology
Volume/Issue:
Volume 12: Issue 2
Short term effects of soil disinfection with metham sodium and organic alternatives on nematode communities
Authors:
G. Boutsis Aristotle University Department of Zoology, School of Biology 54124 Thessaloniki Greece

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G. Stamou Aristotle University Department of Zoology, School of Biology 54124 Thessaloniki Greece

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M. Argyropoulou Aristotle University Department of Zoology, School of Biology 54124 Thessaloniki Greece

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Pages:
161–170
Online Publication Date:
17 Nov 2011
Publication Date:
01 Dec 2011
Article Category:
Journal Article
DOI:
https://doi.org/10.1556/comec.12.2011.2.3
Keywords:
Channel index; Chemical disinfection; Enrichment index; Essential oils; Maturity index; Neem; Network analysis; Plant parasitic index; Rényi’s diversity; Tillage
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Nematode communities are valuable bioindicators of soil disturbance induced by agricultural practices. We report the results of a short term experiment set on a field previously cultivated with shell beans, where different agricultural practices were applied, namely disinfection with chemicals or organic alternatives (neem, basil, marigold and clove oils). We provide a detailed description of the soil nematode community before and after the application of agricultural practices, in terms of trophic structure, nematode functional indices and diversity. We also employ network analysis techniques to analyze the structure of nematode assemblages on the basis of co-occurrence of genera in samples. Chemical disinfection had a direct lethal effect on all nematode genera reducing or even eliminating their populations, while organic amendments favored only the free living nematodes without affecting plant feeders. These differences were poorly reflected on changes of diversity and even less on those of nematode indices. Network analysis offered significant insights into the structural changes in the web of interactions among nematode genera. The network after chemical disinfection was smaller, poorly connected and almost entirely dependent on the dominant phytoparasite Paratylenchus. In the absence of chemicals, large and more complex networks were formed.

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Cover Community Ecology
Community Ecology An Interdisciplinary Journal Reporting Progress in Community and Population Studies
Print ISSN:
1585-8553
Online ISSN:
1588-2756

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Community Ecology
Language English
Size A4
Year of
Foundation		 2000
Volumes
per Year		 1
Issues
per Year		 3
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1585-8553 (Print)
ISSN 1588-2756 (Online)

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