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Plant and Soil

, Volume 371, Issue 1–2, pp 53–66 | Cite as

Nutrient input from hemiparasitic litter favors plant species with a fast-growth strategy

  • Andreas Demey
  • Jeroen Staelens
  • Lander Baeten
  • Pascal Boeckx
  • Martin Hermy
  • Jens Kattge
  • Kris Verheyen
Regular Article

Abstract

Aims

Hemiparasitic plants often produce nutrient-rich litter with high decomposition rates, and thus can enhance nutrient availability. When plant species have differential affinities for this nutrient source, hemiparasitic litter might influence species composition in addition to the parasitic suppression of host species. We expected that species adapted to fertile habitats derive a higher proportion of nutrients from the hemiparasitic litter compared to other species.

Methods

15N-labeled litter of Rhinanthus angustifolius and Pedicularis sylvatica was added to experimental field plots and adjacent litter bags. We examined N release from the litter, N uptake by the vegetation 2, 4 and 12 months after litter addition and differences in the proportion of N taken up from the litter (NL) between co-occurring species.

Results

The percentage of N in shoots of co-occurring plant species that is derived from the added hemiparasitic litter (NL) strongly differed between the species (0.1–6.2 %). After exclusion of species with an alternative N source (legumes as well as ectomycorrhizal and ericoid mycorrhizal species), NL was positively related (p < 0.001) with specific leaf area (SLA) and at Pedicularis sites with leaf N concentration (LNC) and leaf phosphorus concentration (LPC) (p < 0.05), i.e. leaf traits associated with a fast-growth strategy and adaptation to high-nutrient environments.

Conclusions

Our results suggest that nutrient release from hemiparasitic litter favors plant species with a fast-growth strategy adapted to high-nutrient environments compared to species with a slow-growth strategy. Whether continued hemiparasitic litter inputs are able to change species composition in the long term requires further research.

Keywords

15N tracing Litter addition Semi-natural grassland TRY Leaf traits Nutrient cycling Rhinanthus angustifolius Pedicularis sylvatica 

Notes

Acknowledgments

Special thanks to the six reserve managers. This research was funded by the Research Foundation - Flanders (FWO-Vlaanderen). AD was supported by a PhD grant of the agency for Innovation by Science and Technology (IWT-Vlaanderen); JS was funded as postdoctoral fellow of FWO-Vlaanderen. LB held a postdoctoral fellowship of the Special Research Fund of Ghent University (BOF). The study has been supported by the TRY initiative on plant traits (http://www.try-db.org). The TRY initiative and database is hosted, developed and maintained by J. Kattge and G. Bönisch (Max Planck Institute for Biogeochemistry, Jena, Germany). TRY is/has been supported by DIVERSITAS, IGBP, the Global Land Project, the UK Natural Environment Research Council (NERC) through its program QUEST (Quantifying and Understanding the Earth System), the French Foundation for Biodiversity Research (FRB), and GIS “Climat, Environnement et Société” France.

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© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Andreas Demey
    • 1
  • Jeroen Staelens
    • 1
    • 3
  • Lander Baeten
    • 1
    • 4
  • Pascal Boeckx
    • 3
  • Martin Hermy
    • 2
  • Jens Kattge
    • 5
  • Kris Verheyen
    • 1
  1. 1.Forest & Nature Lab (ForNaLab)Ghent UniversityGontrodeBelgium
  2. 2.Division Forest, Nature and Landscape (FNL)KU LeuvenHeverleeBelgium
  3. 3.Isotope Bioscience Laboratory (ISOFYS)Ghent UniversityGhentBelgium
  4. 4.Terrestrial Ecology Unit (TEREC)Ghent UniversityGhentBelgium
  5. 5.Max Planck Institute for BiogeochemistryJenaGermany

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