Microbial community structure and functioning along metal pollution gradients

2013
journal article
article
103
dc.abstract.enToxic effects of heavy metals on soil microorganisms have been confirmed in a number of laboratory studies. However, most real-field studies do not allow for strong general conclusions due to a range of problems, such as pseudoreplication and confounding factors, which are almost impossible to control for with the most commonly used polluted versus unpolluted or random sampling designs. Effects of metal contamination on soil microbial community traits were measured along 2 pollution gradients in southern Poland. Employing an experimental regression design, using 2 separate gradients, the authors aimed to control for effects of soil properties and beta-diversity of microbial communities. General microbial activity was measured as soil basal respiration rate and substrate-induced respiration, while microbial functional and structural diversity were analyzed with community-level physiological profiles and phospholipid fatty acid patterns, respectively. Metal concentrations were normalized to their toxicity and integrated in a toxicity index (TI). Microbial activity (basal and substrate-induced respiration) decreased in both gradients with increasing TI. Community-level physiological profiles for fungi correlated positively with TI, but no impact of TI on the community-level physiological profiles of bacteria was observed. The phospholipid fatty acids a:15 and i:17 were positively correlated with TI, whereas 16:1ω9 and 18:2ω9 were negatively correlated with TI. The use of 2 gradients (Olkusz and Miasteczko Śląskie) allowed the authors to reveal a clear effect of pollution on general microbial structure and activities, even though they were not able to control completely for all confounding factors. Soil pH, organic matter content, and nutrient level appeared to be at least as important as TI in determining microbial community structure and activities.pl
dc.affiliationWydział Biologii i Nauk o Ziemi : Instytut Nauk o Środowiskupl
dc.contributor.authorAzarbad, Hamed - 198634 pl
dc.contributor.authorNiklińska, Maria - 130966 pl
dc.contributor.authorvan Gestel, Cornelis A. M.pl
dc.contributor.authorvan Straalen, Nico M.pl
dc.contributor.authorRöling, Wilfred F. M.pl
dc.contributor.authorLaskowski, Ryszard - 129868 pl
dc.date.accessioned2014-12-20T08:06:13Z
dc.date.available2014-12-20T08:06:13Z
dc.date.issued2013pl
dc.description.number9pl
dc.description.physical1992-2002pl
dc.description.volume32pl
dc.identifier.doi10.1002/etc.2269pl
dc.identifier.eissn1552-8618pl
dc.identifier.issn0730-7268pl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/2372
dc.languageengpl
dc.language.containerengpl
dc.rightsDodaję tylko opis bibliograficzny*
dc.rights.licencebez licencji
dc.rights.uri*
dc.subject.encommunity-level physiological profile (CLPP)pl
dc.subject.enphospholipid fatty acid (PLFA)pl
dc.subject.ensoil respiration ratepl
dc.subject.enheavy metalspl
dc.subject.enpollution gradientpl
dc.subject.ensoilpl
dc.subtypeArticlepl
dc.titleMicrobial community structure and functioning along metal pollution gradientspl
dc.title.journalEnvironmental Toxicology and Chemistrypl
dc.typeJournalArticlepl
dspace.entity.typePublication
dc.abstract.enpl
Toxic effects of heavy metals on soil microorganisms have been confirmed in a number of laboratory studies. However, most real-field studies do not allow for strong general conclusions due to a range of problems, such as pseudoreplication and confounding factors, which are almost impossible to control for with the most commonly used polluted versus unpolluted or random sampling designs. Effects of metal contamination on soil microbial community traits were measured along 2 pollution gradients in southern Poland. Employing an experimental regression design, using 2 separate gradients, the authors aimed to control for effects of soil properties and beta-diversity of microbial communities. General microbial activity was measured as soil basal respiration rate and substrate-induced respiration, while microbial functional and structural diversity were analyzed with community-level physiological profiles and phospholipid fatty acid patterns, respectively. Metal concentrations were normalized to their toxicity and integrated in a toxicity index (TI). Microbial activity (basal and substrate-induced respiration) decreased in both gradients with increasing TI. Community-level physiological profiles for fungi correlated positively with TI, but no impact of TI on the community-level physiological profiles of bacteria was observed. The phospholipid fatty acids a:15 and i:17 were positively correlated with TI, whereas 16:1ω9 and 18:2ω9 were negatively correlated with TI. The use of 2 gradients (Olkusz and Miasteczko Śląskie) allowed the authors to reveal a clear effect of pollution on general microbial structure and activities, even though they were not able to control completely for all confounding factors. Soil pH, organic matter content, and nutrient level appeared to be at least as important as TI in determining microbial community structure and activities.
dc.affiliationpl
Wydział Biologii i Nauk o Ziemi : Instytut Nauk o Środowisku
dc.contributor.authorpl
Azarbad, Hamed - 198634
dc.contributor.authorpl
Niklińska, Maria - 130966
dc.contributor.authorpl
van Gestel, Cornelis A. M.
dc.contributor.authorpl
van Straalen, Nico M.
dc.contributor.authorpl
Röling, Wilfred F. M.
dc.contributor.authorpl
Laskowski, Ryszard - 129868
dc.date.accessioned
2014-12-20T08:06:13Z
dc.date.available
2014-12-20T08:06:13Z
dc.date.issuedpl
2013
dc.description.numberpl
9
dc.description.physicalpl
1992-2002
dc.description.volumepl
32
dc.identifier.doipl
10.1002/etc.2269
dc.identifier.eissnpl
1552-8618
dc.identifier.issnpl
0730-7268
dc.identifier.uri
http://ruj.uj.edu.pl/xmlui/handle/item/2372
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Dodaję tylko opis bibliograficzny
dc.rights.licence
bez licencji
dc.rights.uri*
dc.subject.enpl
community-level physiological profile (CLPP)
dc.subject.enpl
phospholipid fatty acid (PLFA)
dc.subject.enpl
soil respiration rate
dc.subject.enpl
heavy metals
dc.subject.enpl
pollution gradient
dc.subject.enpl
soil
dc.subtypepl
Article
dc.titlepl
Microbial community structure and functioning along metal pollution gradients
dc.title.journalpl
Environmental Toxicology and Chemistry
dc.typepl
JournalArticle
dspace.entity.type
Publication

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