Anthropogenic perturbations in marine microbial communities

FEMS Microbiology Reviews, Journal Year: 2010, Volume and Issue: 35(2), P. 275 - 298

Published: July 29, 2010

Human activities impact marine ecosystems at a global scale and all levels of complexity life. Despite their importance as key players in ecosystem processes, the stress caused to microorganisms has been greatly neglected. This fact is aggravated by difficulties analysis microbial communities high diversity, making definition patterns difficult. In this review, we discuss effects nutrient increase, pollution organic chemicals heavy metals introduction antibiotics pathogens into environment. Microbial respond positively nutrients chemical increasing cell numbers. There are also significant changes community composition, increases diversity temporal variability. These changes, which evidence modification environmental conditions due anthropogenic stress, usually alter functionality, although aspect not explored depth. Altered human-impacted environments can turn have detrimental on human health (i.e. spread antibiotic resistance). New threats ecosystems, i.e. related climate change, could an communities. Therefore, effort dedicated analyse compartment detail should be made when studying ecosystems.

Language: Английский

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Advances in the use of terminal restriction fragment length polymorphism (T-RFLP) analysis of 16S rRNA genes to characterize microbial communities

Applied Microbiology and Biotechnology, Journal Year: 2008, Volume and Issue: 80(3), P. 365 - 380

Published: July 21, 2008

Language: Английский

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De novo metagenomic assembly reveals abundant novel major lineage of Archaea in hypersaline microbial communities

The ISME Journal, Journal Year: 2011, Volume and Issue: 6(1), P. 81 - 93

Published: June 30, 2011

Language: Английский

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Environmental Factors Affect Acidobacterial Communities below the Subgroup Level in Grassland and Forest Soils

Applied and Environmental Microbiology, Journal Year: 2012, Volume and Issue: 78(20), P. 7398 - 7406

Published: Aug. 12, 2012

ABSTRACT In soil, Acidobacteria constitute on average 20% of all bacteria, are highly diverse, and physiologically active in situ . However, their individual functions interactions with higher taxa soil still unknown. Here, potential effects land use, properties, plant diversity, nanofauna acidobacterial community composition were studied by cultivation-independent methods grassland forest soils from three different regions Germany. The analysis 16S rRNA gene clone libraries representing revealed that dominated subgroup Gp6 Gp1 a large number sites ( n = 57) fingerprinting (terminal restriction fragment length polymorphism [T-RFLP] denaturing gradient gel electrophoresis [DGGE]) showed diversities differed between but also among the regions. Edaphic such as pH, organic carbon, total nitrogen, C/N ratio, phosphorus, nitrate, ammonium, moisture, temperature, respiration, had an impact assessed fingerprinting. interrelations environmental parameters terminal fragments (T-RFs) significantly, e.g., T-RFs correlated positively or negatively nitrogen content. Novel significant correlations subpopulations (i.e., populations within subgroups) vascular diversity only sequences. Thus, for detecting novel , subgroups have to be considered.

Language: Английский

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Monitoring and assessing processes of organic chemicals removal in constructed wetlands

Chemosphere, Journal Year: 2008, Volume and Issue: 74(3), P. 349 - 362

Published: Nov. 9, 2008

Language: Английский

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