Document Detail


Diversity of soil nematodes in areas polluted with heavy metals and polycyclic aromatic hydrocarbons (PAHs) in Lanzhou, China.
MedLine Citation:
PMID:  19205795     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study investigated the soil nematode community structure along the Yellow River in the Lanzhou area of China, and analyzed the impact of heavy metals (Cd, Pb, Cr, Cu, and Zn) and polycyclic aromatic hydrocarbons (PAHs) on the nematode community. Soil samples from five locations (named A-E), which were chosen for soil analysis, showed significant differences in their heavy metal content (p < 0.01), as well as in the variety of nematodes (up to 41 genera) and families (up to 20) that were present. The different samples also differed significantly in the total PAH content (p < 0.05), as well as the six types of PAH present. Sites A-C showed the most severe contamination with heavy metals and PAHs; these sites had the lowest abundance of fungivores and omnivore/predators, but the proportion of bacteriovores was the highest (p < 0.05). Site E, in contrast, showed only minor pollution with heavy metals and PAHs, and it contained the highest abundance of plant parasites (p < 0.05). Several nematode ecological indicators were found to correlate with concentration of soil pollutants at all the sites tested: the maturity index (MI, in addition to plant parasites), plant parasite index (PPI), SigmaMI (including all the soil nematodes), Shannon-Wiener diversity index (H''), and Wasilewska index (WI). Disturbance to the soil environment was more severe when MI, SigmaMI, and H' values were lower. The results of the study show that the abundance and structure of the soil nematode communities in the sampling locations were strongly influenced by levels of heavy metals and PAHs in the soil. They also show that the diversity index H' and the maturity index can be valuable tools for assessing the impact of pollutants on nematodes.
Authors:
Gen Chen; Jie Qin; Dazhong Shi; Yingmei Zhang; Weihong Ji
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-02-10
Journal Detail:
Title:  Environmental management     Volume:  44     ISSN:  1432-1009     ISO Abbreviation:  Environ Manage     Publication Date:  2009 Jul 
Date Detail:
Created Date:  2009-06-24     Completed Date:  2009-07-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7703893     Medline TA:  Environ Manage     Country:  United States    
Other Details:
Languages:  eng     Pagination:  163-72     Citation Subset:  IM    
Affiliation:
School of Life Sciences, Lanzhou University, Lanzhou, People's Republic of China. chengen@lzu.com.cn
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MeSH Terms
Descriptor/Qualifier:
Agriculture / methods
Animals
Biodiversity*
Biological Markers / analysis
China
Environmental Monitoring
Metals, Heavy / analysis*
Nematoda / classification*
Polycyclic Hydrocarbons, Aromatic / analysis*
Risk Assessment
Soil / analysis
Soil Pollutants / analysis*
Waste Disposal, Fluid / methods
Chemical
Reg. No./Substance:
0/Biological Markers; 0/Metals, Heavy; 0/Polycyclic Hydrocarbons, Aromatic; 0/Soil; 0/Soil Pollutants

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