Methyl bromide fumigation suppressed the soil food web in tomato greenhouse Nitrogen input altered testate amoebae community in peatland of Sanjiang Plain, Northeast China. Diversity and ecological function of free\|living heterotrophic flagellates Community characteristics of soil ciliated protozoan at Dapeng Peninsula Changes of soil biodiversity in Inner Mongolia steppe after 5 years of N and P fertilizer applications Static toxicity evaluation of chemical wastewater by PFU microbial communities method