Protozoan Pulses Unveil Their Pivotal Position Within the Soil Food Web
Contributor(s)Institute of Biological, Environmental and Rural Sciences
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AbstractCrotty, F. V., Adl, S. M., Blackshaw, R. P., Murray, P. J. (2012). Protozoan Pulses Unveil Their Pivotal Position Within the Soil Food Web. Microbial Ecology, 63 (4), 905-918.
Protozoa are one of the most abundant groups of bacterivores within the soil and are responsible for mineralisation of bacterial biomass, having a large impact on C and N cycling. Little is known of their contribution to soil nutrient transfers or the identity of their consumers. Here, for the first time indigenous flagellates and ciliates, enriched to 83 atom% for C-13 and 10 atom% for N-15, were introduced to soil cores from two different land managements, grassland and woodland with the same soil type, to trace the flow of protozoan C and N through the soil food web. Nematodes, Collembola, earthworms and insect larvae obtained the greatest amounts of C and N of protozoan origin, either through direct consumption or uptake of biomass post-cell death. Our results show that changes in management, affect the functioning of the soil food web and the utilisation of protozoa as a food source.
Crotty , F V , Adl , S M , Blackshaw , R P & Murray , P J 2012 , ' Protozoan Pulses Unveil Their Pivotal Position Within the Soil Food Web ' Microbial Ecology , vol 63 , no. 4 , pp. 905-918 . , 10.1007/s00248-011-9956-y
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