Cited by 54Soil Carbon and Nitrogen DynamicsMycorrhizal Fungi and Plant InteractionsCollembola Taxonomy and Ecology Studies

Soil animals influence microbial abundance, but not plant-microbial competition for soil organic nitrogen

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COLE, L., STADDON, P. L., SLEEP, D., BARDGETT, R. D.·2004·Functional Ecology

Abstract

Summary In a microcosm experiment we examined the effects of individual species of microarthropods, and variations in microarthropod diversity of up to eight species, on soil microbial properties and the short‐term partitioning of a dual‐labelled organic nitrogen source (glycine‐2‐13C‐15N) between a grassland plant,Agrostis capillaris, and the soil microbial biomass, to determine how soil fauna and their diversity influence plant–microbial competition for organic N. We hypothesized that variations in the diversity of animals would influence the partitioning of15N inputs between plants and the microbial biomass, due to the effect of animal grazing on the microbial biomass, and hence its ability to sequester N. Certain individual species of Collembola influenced the microbial community of the soil.Folsomia quadrioculatareduced microbial biomass, whereasMesaphorura macrochaetaenhanced arbuscular mycorrhizal (AM) colonization ofA. capillarisroots. Effects of increasing species richness of microarthropods on microbial biomass and AM colonization were detected, but these effects could be interpreted in relation to the presence or absence of individual species. Microbial uptake of added15N was not affected by the presence of any of the individual species of animal in the monoculture treatments. Similarly, increasing diversity of microarthropods had no detectable effect on microbial15N. Root and shoot uptake of15N was also largely unaffected by both single species and variations in diversity of microarthropods. However, one collembolan species,Ceratophysella denticulata, reduced root15N capture when present in monoculture. We did not detect13C in plant tissue under any experimental treatments, indicating that all N was taken up by plants after mineralization. Our data suggest that, while single species and variations in diversity of microarthropods influence microbial abundance in soil, there is no effect on microbial or plant uptake of N. Overall, these data provide little support for the notion that microbial‐feeding soil animals are regulators of microbial–plant competition for N.

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Crossref · 10.1111/j.0269-8463.2004.00894.x

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Authors
COLE, L., STADDON, P. L., SLEEP, D., & BARDGETT, R. D.
Affiliations
  • UK Centre for Ecology & Hydrology (GB)
  • Natural Environment Research Council (GB)
  • Lancaster University (GB)
Corresponding author
COLE, L.
Venue
Functional Ecology
Publisher
Wiley
Published
2004-09-21
Volume
18
Issue
5
Pages
631-640
ISSN
  • 0269-8463 (ISSN-L)
  • 1365-2435
OpenAlex
W2118326289
Cited by
54
References
58
Citations by year
2023: 1 · 2022: 1 · 2021: 2 · 2020: 2 · 2019: 4 · 2018: 1 · 2016: 2 · 2015: 2 · 2014: 3 · 2013: 2 · 2012: 2
FWCI
10.56
Type
journal article
Language
en
Open access
Locations
  • Functional Ecology (publishedVersion)
  • Lancaster EPrints (Lancaster University) (submittedVersion)
  • Research Explorer (The University of Manchester) (submittedVersion)
  • Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU) (submittedVersion)
Funders
  • European Commission
  • Sveriges Lantbruksuniversitet
  • Natural Environment Research Council
  • Centre for Ecology and Hydrology
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Mycorrhizal Fungi and Plant Interactions
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Collembola Taxonomy and Ecology Studies
Keywords
soil microarthropods, soil fauna diversity, soil organic nitrogen, microbial biomass, arbuscular mycorrhizal colonization, Agrostis capillaris, Collembola, Folsomia quadrioculata, nitrogen sequestration, nitrogen mineralization, nitrogen uptake

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