Protozoan Pulses Unveil Their Pivotal Position Within the Soil Food Web

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...

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Published in:Microbial ecology 2012-05, Vol.63 (4), p.905-918
Main Authors: Crotty, Felicity V., Adl, Sina M., Blackshaw, Rod P., Murray, Philip J.
Format: Article
Language:English
Subjects:
Animals
Apes
Arthropods - physiology
Biological and medical sciences
Biomedical and Life Sciences
Ciliophora - physiology
Collembola
Ecology
Ecosystem
Eukaryota - physiology
Food
Food Chain
Forest soils
Fundamental and applied biological sciences. Psychology
Geoecology/Natural Processes
Grasses
Grassland soils
Grasslands
Habitats
Insecta - physiology
INVERTEBRATE MICROBIOLOGY
Invertebrates
Land management
Larvae
Life Sciences
Microbial Ecology
Microbiology
Mineralization
Nature Conservation
Nematoda
Nematoda - physiology
Oligochaeta - physiology
Protozoa
Soil - parasitology
Soil fauna
Soil food webs
Soil nutrients
Soil types
Water Quality/Water Pollution
Woodland soils
Woodlands
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description 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 ¹³C and 10 atom% for ¹⁵N, 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 Í 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.
doi_str_mv 10.1007/s00248-011-9956-y
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subjects Animals
Apes
Arthropods - physiology
Biological and medical sciences
Biomedical and Life Sciences
Ciliophora - physiology
Collembola
Ecology
Ecosystem
Eukaryota - physiology
Food
Food Chain
Forest soils
Fundamental and applied biological sciences. Psychology
Geoecology/Natural Processes
Grasses
Grassland soils
Grasslands
Habitats
Insecta - physiology
INVERTEBRATE MICROBIOLOGY
Invertebrates
Land management
Larvae
Life Sciences
Microbial Ecology
Microbiology
Mineralization
Nature Conservation
Nematoda
Nematoda - physiology
Oligochaeta - physiology
Protozoa
Soil - parasitology
Soil fauna
Soil food webs
Soil nutrients
Soil types
Water Quality/Water Pollution
Woodland soils
Woodlands
title Protozoan Pulses Unveil Their Pivotal Position Within the Soil Food Web
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