Plant and Soil

, Volume 421, Issue 1–2, pp 175–190 | Cite as

Invasive earthworms change nutrient availability and uptake by forest understory plants

  • Annise M. Dobson
  • Bernd Blossey
  • Justin B. Richardson
Regular Article


Background and aims

Assess whether invasive earthworms alter nutrient dynamics in habitats they colonize.


We investigated nutrient dynamics of forest soils and three native plant species (Acer saccharum, Polygonatum pubescens, Polystichum acrostichoides) along four earthworm invasion gradients in central New York.


Earthworm biomass (a proxy for earthworm impact) was related to distribution and concentration of soil and plant nutrients. At shallower depths, earthworms were associated with lower total and exchangeable P, but higher Ca, K, Mg and Mn. Earthworm-invaded plots showed higher soil Ca and higher foliar Ca in A. saccharum and P. acrostichoides, and lower soil P with lower foliar P in P. pubescens. Presence of earthworms substantially decreased rooting volume in the A horizon, co-occurring with a build up of exchangeable nutrient concentrations and pools.


Overall, earthworm biomass was a better predictor of foliar nutrient concentrations than either exchangeable or total nutrient concentrations and pools. Earthworms may create stressful rooting conditions, limiting rooting of native plants in the A horizon. The resulting plant-accessible nutrient pool that builds up in the A horizon of earthworm-invaded soils could provide a mechanism for the invasive success of non-indigenous plants that have an evolutionary association with earthworms in the native range and that follow earthworm invasions.


Macronutrients Calcium Phosphorus Foliar tissue Root tissue European earthworms 



We thank Tim Fahey, Francoise Vermeylen and Andrea Dávalos for their input in interpreting results and improving data analysis. Juan Pablo Jordan and Wade Simmons helped immensely in field collection, and we are grateful to Gregg McElwee for his help in lab analysis. We would like to thank the New York State Department of Environmental Conservation, Cornell Natural Areas, and Victoria Nuzzo for long-term use of their land for this experiment. This study was conducted through TRP #6673, and we are grateful for funding received through the Mellon Foundation and a Hatch Grant.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Annise M. Dobson
    • 1
  • Bernd Blossey
    • 1
  • Justin B. Richardson
    • 2
  1. 1.Department of Natural ResourcesCornell UniversityIthacaUSA
  2. 2.Department of Earth and Atmospheric SciencesCornell UniversityIthacaUSA

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