NDLI: Soil bacterial diversity in degraded and restored lands of Northeast Brazil

Content Provider	Springer Nature Link
Author	Araújo, Ademir Sérgio Ferreira Borges, Clovis Daniel Tsai, Siu Mui Cesarz, Simone Eisenhauer, Nico
Copyright Year	2014
Abstract	Land degradation deteriorates biological productivity and affects environmental, social, and economic sustainability, particularly so in the semi-arid region of Northeast Brazil. Although some studies exist reporting gross measures of soil microbial parameters and processes, limited information is available on how land degradation and restoration strategies influence the diversity and composition of soil microbial communities. In this study we compare the structure and diversity of bacterial communities in degraded and restored lands in Northeast Brazil and determine the soil biological and chemical properties influencing bacterial communities. We found that land degradation decreased the diversity of soil bacteria as indicated by both reduced operational taxonomic unit (OTU) richness and Shannon index. Soils under native vegetation and restoration had significantly higher bacterial richness and diversity than degraded soils. Redundancy analysis revealed that low soil bacterial diversity correlated with a high respiratory quotient, indicating stressed microbial communities. By contrast, soil bacterial communities in restored land positively correlated with high soil P levels. Importantly, however, we found significant differences in the soil bacterial community composition under native vegetation and in restored land, which may indicate differences in their functioning despite equal levels of bacterial diversity.
Starting Page	891
Ending Page	899
Page Count	9
File Format	PDF
ISSN	00036072
Journal	Antonie van Leeuwenhoek
Volume Number	106
Issue Number	5
e-ISSN	15729699
Language	English
Publisher	Springer International Publishing
Publisher Date	2014-08-14
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	T-RFLP Microbial ecology Land degradation Molecular profiling Microbiology Medical Microbiology Plant Sciences Soil Science & Conservation
Content Type	Text
Resource Type	Article
Subject	Medicine Molecular Biology Microbiology

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