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Radl, V. ; Chronakova, A.* ; Cuhel, J.* ; Simek, M.* ; Elhottova, D.* ; Welzl, G. ; Schloter, M.

Bacteria dominate ammonia oxidation in soils used for outdoor cattle overwintering.

Appl. Soil Ecol. 77, 68-71 (2014)
DOI
Open Access Green as soon as Postprint is submitted to ZB.
In areas used for cattle overwintering detrimental effects normally associated with grazing are intensified. Among the alterations observed, increases on the N availability and soil pH may highly influence structure of ammonia oxidizing microbes and thus influence nitrification pattern in soil. To evaluate this assumption, we assessed the abundance and diversity of ammonia oxidizing bacteria (AOB) and archaea (AOA) in three sites with different degrees of animal impact (severe, moderate or no impact) of an overwintering pasture by means of qPCR and T-RFLP of amoA genes. In areas where no animal impact could be identified AOA was dominating over AOB. However, AOB abundance increased as the degree of animal impact enhances, becoming most dominant in the severely impacted site. Interestingly, the diversity of AOB was the highest in the severely impacted area, where AOA diversity was the lowest. Obviously the pressure imposed by altered environmental conditions created by cattle husbandry lead to the selection of AOB and AOA populations, adapted to alkaline pH and higher ammonia concentration.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Ammonia Oxidation ; Bacteria ; Archaea ; Amoa Diversity ; Urea ; Pasture; Nitrous-oxide Emissions; Grassland Soils; Niche Specialization; Oxidizing Archaea; Husbandry; Compaction; Kinetics; Area
ISSN (print) / ISBN 0929-1393
e-ISSN 1873-0272
Quellenangaben Volume: 77, Issue: , Pages: 68-71 Article Number: , Supplement: ,
Publisher Elsevier
Publishing Place Amsterdam
Non-patent literature Publications
Reviewing status Peer reviewed