Overland flow systems for treatment of landfill leachates: Potential nitrification and structure of the ammonia-oxidising bacterial community during a growing season

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Fältnamn	Indikatorer	Metadata
000		03915naa a2200337 4500
001		oai:DiVA.org:liu-17919
003		SwePub
008		090424s2007 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-179192 URI
024	7	a https://doi.org/10.1016/j.soilbio.2006.06.0162 DOI
040		a (SwePub)liu
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Sundberg, Carina,d 1963-u Linköpings universitet,Medicinsk mikrobiologi,Hälsouniversitetet4 aut0 (Swepub:liu)carsu27
245	1 0	a Overland flow systems for treatment of landfill leachates :b Potential nitrification and structure of the ammonia-oxidising bacterial community during a growing season
264	1	b Elesevire,c 2007
338		a print2 rdacarrier
520		a Overland flow systems are useful for treating landfill leachates, because they provide favourable conditions for nitrification and they are easy to maintain. However, little is known about the microbial communities in such systems or the nitrification capacity of those microorganisms. In this study, seasonal variations in potential nitrification and in community composition of nitrifying bacteria were investigated in two overland flow areas receiving leachate from landfills at Korslöt and Hagby, Sweden. Samples were collected in the settling ponds sediment and at two depths in the overland flow areas (the macrophyte litter layer and the rhizosphere) in May, August and November 2003. A short-term incubation method was used to measure potential oxidation of ammonia and nitrite (designated PAO and PNO). The ammonia-oxidising bacterial (AOB) community was investigated using a 16S rRNA gene approach that included PCR amplification and analysis of PCR products by denaturing gradient gel electrophoresis (DGGE), followed by nucleotide sequencing and phylogenetic analysis. PAO was determined in the range 5–2700 (NO2−+NO3−)-N g−1 dw d−1 and PNO in the range 60–2000 μg NO2−-N g−1 dw d−1. At Korslöt, PAO and PNO showed similar temporal variation in the different ecosystems, whereas no such relationship was noticed at Hagby. Considering both sites, there was no obvious change in the composition of the AOB community over the growing season. However, the composition did differ between the ecosystems: Nitrosomonas-like sequences were more common in the ponds, and in the litter layers they were found as often as Nitrosospira-like sequences, whereas Nitrosospira-like sequences were more common in the rhizospheres. Altogether, we found nine different AOB sequences, five Nitrosomonas-like and four Nitrosospira-like, which belonged to clusters 0, 2, 3b, 6a, 6b and 7. There was no apparent relationship between the number of AOB populations and the PAO in different soil layers and sediments.
653		a Ammonia-oxidising bacterial community; Landfill leachates; Nitrification; Overland flow; 16S rDNA; Denaturing gradient gel electrophoresis
653		a MEDICINE
653		a MEDICIN
700	1	a Stendahl, Jenny S. K.u Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska högskolan4 aut0 (Swepub:liu)jenba16
700	1	a Sundblad-Tonderski, Karinu Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska högskolan4 aut0 (Swepub:liu)karsu52
700	1	a Lindgren, Per-Ericu Linköpings universitet,Medicinsk mikrobiologi,Hälsouniversitetet4 aut0 (Swepub:liu)perli15
710	2	a Linköpings universitetb Medicinsk mikrobiologi4 org
773	0	t Soil Biology and Biochemistryd : Elesevireg 39:1, s. 127-138q 39:1<127-138x 0038-0717x 1879-3428
856	4	u http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-17923y Link to Ph.D. Thesis
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-17919
856	4 8	u https://doi.org/10.1016/j.soilbio.2006.06.016

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