Environmental drivers of the distribution of nitrogen functional genes at a watershed scale

Tsiknia Myrto, Paranychianakis Nikolaos, Varouchakis Emmanouil, Nikolaidis Nikolaos

URI	http://purl.tuc.gr/dl/dias/924ED85E-AB81-44A4-9A34-92482D235C29	-
Identifier	http://femsec.oxfordjournals.org/content/femsec/91/6/fiv052.full.pdf	-
Identifier	https://doi.org/10.1093/femsec/fiv052	-
Language	en	-
Extent	11 pages	en
Title	Environmental drivers of the distribution of nitrogen functional genes at a watershed scale	en
Creator	Tsiknia Myrto	en
Creator	Τσικνια Μυρτω	el
Creator	Paranychianakis Nikolaos	en
Creator	Παρανυχιανακης Νικολαος	el
Creator	Varouchakis Emmanouil	en
Creator	Βαρουχακης Εμμανουηλ	el
Creator	Nikolaidis Nikolaos	en
Creator	Νικολαιδης Νικολαος	el
Publisher	Federation of European Microbiological Societies	en
Description	Δημοσίευση σε επιστημονικό περιοδικό	el
Content Summary	To date only few studies have dealt with the biogeography of microbial communities at large spatial scales, despite the importance of such information to understand and simulate ecosystem functioning. Herein, we describe the biogeographic patterns of microorganisms involved in nitrogen (N)-cycling (diazotrophs, ammonia oxidizers, denitrifiers) as well as the environmental factors shaping these patterns across the Koiliaris Critical Zone Observatory, a typical Mediterranean watershed. Our findings revealed that a proportion of variance ranging from 40 to 80% of functional genes abundance could be explained by the environmental variables monitored, with pH, soil texture, total organic carbon and potential nitrification rate being identified as the most important drivers. The spatial autocorrelation of N-functional genes ranged from 0.2 to 6.2 km and prediction maps, generated by cokriging, revealed distinct patterns of functional genes. The inclusion of functional genes in statistical modeling substantially improved the proportion of variance explained by the models, a result possibly due to the strong relationships that were identified among microbial groups. Significant relationships were set between functional groups, which were further mediated by land use (natural versus agricultural lands). These relationships, in combination with the environmental variables, allow us to provide insights regarding the ecological preferences of N-functional groups and among them the recently identified clade II of nitrous oxide reducers.	en
Type of Item	Peer-Reviewed Journal Publication	en
Type of Item	Δημοσίευση σε Περιοδικό με Κριτές	el
License	http://creativecommons.org/licenses/by/4.0/	en
Date of Item	2015-11-06	-
Date of Publication	2015	-
Subject	Biogeography--Effect of climate on	en
Subject	Biogeography--Effect of climatic changes on	en
Subject	biogeography climatic factors	en
Subject	biogeography effect of climate on	en
Subject	biogeography effect of climatic changes on	en
Subject	Balance of nature	en
Subject	Biology--Ecology	en
Subject	Bionomics	en
Subject	Ecological processes	en
Subject	Ecological science	en
Subject	Ecological sciences	en
Subject	Environment	en
Subject	Environmental biology	en
Subject	Oecology	en
Subject	ecology	en
Subject	balance of nature	en
Subject	biology ecology	en
Subject	bionomics	en
Subject	ecological processes	en
Subject	ecological science	en
Subject	ecological sciences	en
Subject	environment	en
Subject	environmental biology	en
Subject	oecology	en
Bibliographic Citation	M. Tsiknia, N. V. Paranychianakis, E. A. Varouchakis and N. P. Nikolaidis, "Environmental drivers of the distribution of nitrogen functional genes at a watershed scale", FEMS Microbiology Ecology, vol. 91, no. 6, May. 2015. doi: http://dx.doi.org/10.1093/femsec/fiv052	en

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Environmental drivers of the distribution of nitrogen functional genes at a watershed scale

Tsiknia Myrto, Paranychianakis Nikolaos, Varouchakis Emmanouil, Nikolaidis Nikolaos

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