Effect of land use and management on soil bacterial biodiversity as measured by PCR-DGGE

Wallis, P.D., Haynes, R.J., Hunter, C.H. and Morris, C.D. (2010) Effect of land use and management on soil bacterial biodiversity as measured by PCR-DGGE. Applied Soil Ecology, 46 1: 147-150. doi:10.1016/j.apsoil.2010.06.006

Author Wallis, P.D.
Haynes, R.J.
Hunter, C.H.
Morris, C.D.
Title Effect of land use and management on soil bacterial biodiversity as measured by PCR-DGGE
Journal name Applied Soil Ecology   Check publisher's open access policy
ISSN 0929-1393
Publication date 2010-09
Sub-type Article (original research)
DOI 10.1016/j.apsoil.2010.06.006
Volume 46
Issue 1
Start page 147
End page 150
Total pages 4
Place of publication The Netherlands
Publisher Elsevier BV
Collection year 2011
Language eng
Abstract Agricultural land use and sugarcane residue management effects on soil bacterial communities at two long-term sites in KwaZulu/Natal, South Africa, were investigated by PCR-DGGE. Land uses at site 1 were maize [M]; pre-harvest burnt sugarcane [SC]; permanent kikuyu pasture [KIK]; pine forest [PF]; wattle forest [W] and undisturbed native grassland [NAT], whereas land managements at site 2 were pre-harvest burning of sugarcane [Bto] or green cane harvesting with retention of a trash mulch [T] (with [F] or without [Fo] fertilizer additions). At site 1, non-metric multidimensional scaling (NMS) separated all land uses, indicating variation in species composition between sites. Species richness and diversity but not evenness differed between land uses. Canonical correspondence analysis (CCA) showed that soil properties (extractable P, acidity, Mg, total cations, K and organic C) were significantly related to bacterial community composition. At site 2, NMS indicated large differences in soil bacterial community composition under trashing versus pre-harvest burning. Species richness was significantly different between treatments but not evenness or diversity. CCA indicated organic C was the main factor associated with the trashing/burning effect and exchangeable Mg with the fertilizer effect, on bacterial communities. Long-term differences in land use or soil management within a single soil type and location thus induced substantial differences in bacterial community composition. © 2010 Elsevier B.V.
Keyword Bacteria
Community structure
Soil organic matter
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
School of Agriculture and Food Sciences
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Created: Wed, 09 Mar 2011, 14:14:12 EST by Professor Richard Haynes on behalf of School of Land, Crop and Food Sciences