Plant Ecology

, Volume 216, Issue 12, pp 1675–1675

Retraction Note to: CO2 effects on plant nutrient concentration depend on plant functional group and available nitrogen: a meta-analysis

  • Benjamin D. Duval
  • Joseph C. Blankinship
  • Paul Dijkstra
  • Bruce A. Hungate
Retraction Note

DOI: 10.1007/s11258-015-0541-1

Cite this article as:
Duval, B.D., Blankinship, J.C., Dijkstra, P. et al. Plant Ecol (2015) 216: 1675. doi:10.1007/s11258-015-0541-1

Retraction Note to: Plant Ecol (2012) 213:505–521 DOI 10.1007/s11258-011-9998-8

This article has been retracted at the request of the authors because of multiple and unintentional data entry errors. After concerns were raised on the forum PubPeer (Duval et al. 2012) related to the open access online data sets compiled by lead author Duval, co-authors Blankinship, Dijkstra, and Hungate compiled a review dataset by consulting the original literature and re-extracting data from all the papers used in the original meta-analysis. In this effort, they found multiple and unintentional errors in the published dataset that could significantly change conclusions made in the paper regarding the generality of elevated CO2 effects on plant nutrient concentrations.

Specific errors were attributable to inadvertently reversing the elevated and ambient CO2 treatments in the original dataset, errors in transcribing numbers from published tables to the original dataset, incorrectly treating element stocks as element concentrations, and incorrectly assigning plant parts to proper categories. In others cases, figures were scanned inaccurately. In still others, data were selected arbitrarily in a manner not described in the methods (e.g., one crop variety was selected from a paper describing responses of multiple crop varieties). There was no evidence of bias in these errors. They were unintentional. Because these errors may influence the conclusions made in the paper, and because the published online datasets are demonstrably incorrect, the authors requested that the paper be retracted.

Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  • Benjamin D. Duval
    • 1
    • 2
    • 3
  • Joseph C. Blankinship
    • 4
  • Paul Dijkstra
    • 1
    • 2
  • Bruce A. Hungate
    • 1
    • 2
  1. 1.Department of Biological SciencesNorthern Arizona UniversityFlagstaffUSA
  2. 2.Merriam Powell Center for Environmental ResearchFlagstaffUSA
  3. 3.Energy Biosciences InstituteUniversity of Illinois at Urbana-ChampaignUrbanaUSA
  4. 4.School of Natural SciencesUniversity of California at MercedMercedUSA

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