Biodiversity & Conservation

, Volume 15, Issue 12, pp 3971–3982 | Cite as

The Relation Between Unpalatable Species, Nutrients and Plant Species Richness in Swiss Montane Pastures

  • David Kleijn
  • Heinz Müller-Schärer


In agriculturally marginal areas, the control of unpalatable weeds on species rich pastures may become problematic due to agricultural and socio-economic developments. It is unclear how increased dominance of unpalatable species would affect the botanical diversity of these grasslands. We investigated whether there was any relationship between plant species diversity and the abundance of unpalatable species and whether soil conditions affected this relationship. In three species-rich montane pastures in western Switzerland, we related plant species richness to soil attributes, the relative cover of all unpalatable species and the relative cover of the locally dominant, toxic Veratrum album in 25 plots of 4 m2. We furthermore determined species richness in small transects through patches of V. album. Species richness was significantly lower in and near (≤ 0.3 m) patches of V. album. At the field scale, plant species richness was best described by total soil N:P ratio (positive relation) in one site and the relative abundance of unpalatable species (negative relation) and soil N:P ratio (positive relation) in a second site. In the third site, species richness was not significantly related to any measured variable. Vegetation diversity (Simpson's D) was negatively related to the relative abundance of unpalatable species in one site and positively related to pH in another site. The results suggest that no single factor can explain plant species richness and diversity in montane pastures. At very high densities unpalatable species can have adverse effects but soil nutrient status appears to be a more general determinant of plant species richness. Conservation efforts should give priority to the prevention of intensification of these pastures.


Grassland Nutrients Total soil N:P ratio Veratrum album 


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  1. Aerts R., de Caluwe H. and Beltman B. (2003). Is the relation between nutrient supply and biodiversity co-determined by the type of nutrient limitation?. Oikos 101: 489–498CrossRefGoogle Scholar
  2. Aerts R., Wallen B. and Malmer N. (1992). Growth-limiting nutrients in Sphagnum-dominated bogs subject to low and high atmospheric nitrogen supply. J. Ecol. 80: 131–140 CrossRefGoogle Scholar
  3. Ammon H.U. and Mu¨ ller-Scha¨ rer H. (1999). Prospects for combining biological weed control with integrated crop production systems and with sensitive management of alpine pastures in Switzerland. Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz 106: 213–220Google Scholar
  4. Augustine D.J. and McNaughton S.J. (1998). Ungulate effects on the functional species composition of plant communities: herbivore selectivity and plant tolerance. J. Wildlife Manage. 62: 1165–1183Google Scholar
  5. Bakker J.P. and Berendse F. (1999). Constraints in the restoration of ecological diversity in grassland and heathland communities. Trend. Ecol. Evol. 14: 63–68CrossRefGoogle Scholar
  6. Bedford B.L., Wallbridge M.R. and Aldous A. (1999). Patterns in nutrient availability and plant diversity of temperate North American wetlands. Ecology 80: 2151–2169CrossRefGoogle Scholar
  7. Berendse F. and Elberse W.Th. 1989. Competition and nutrient losses from the plant. In: Lambers H., Cambridge M.L., Konings H. and Pons T.L. (eds), Causes and Consequences of Variation in Growth Rate and Productivity of Higher Plants. Academic Publishing bv, The Hague, The Netherlands, pp. 269–284.Google Scholar
  8. Bobbink R. (1991). Effects of nutrient enrichment in Dutch chalk grassland. J. Appl. Ecol. 28: 28–41CrossRefGoogle Scholar
  9. Braakhekke W.G. and Hooftman D.A.P. (1999). The resource balance hypothesis of plant species diversity in grassland. J. Veg. Sci. 10: 187–200CrossRefGoogle Scholar
  10. Doree A. (1987). Le veratre ou ellebore blanc (Veratrum album L.). Proceedings of the 5ème réunion du sous-réeau FAO des herbages de montagne, Bled, Yugoslavia, 1–6Google Scholar
  11. Donald P.F., Green R.E. and Heath M.F. (2001). Agricultural intensification and the collapse of Europe's farmland bird populations. Proc. Roy. Soc., Lond. (B) 268: 25–29CrossRefGoogle Scholar
  12. Donald P.F., Pisano G., Rayment M.D. and Pain D.J. (2002). The common agricultural policy, EU enlargements and the conservation of Europe's farmland birds. Agric. Ecosyst. Environ. 89: 167–182CrossRefGoogle Scholar
  13. Dullinger S., Dirnbock T., Greimler J. and Grabherr G. (2003). A resampling approach for evaluating effects of pasture abandonment on subalpine plant species diversity. J. Veg. Sci. 14: 243–252CrossRefGoogle Scholar
  14. Edwards G.R. and Crawley M.J. (1999). Herbivores, seed banks and seedling recruitment in mesic grassland. J. Ecol. 87: 423–435CrossRefGoogle Scholar
  15. EEA. 2004. High Nature Value Farmland – Characteristics, Trends and Policy Challenges. European Environment Agency, Copenhagen, Denmark.Google Scholar
  16. GENSTAT 5 Committee of the Statistics Department. 1993. Genstat 5 release 3 reference manual. Oxford University Press, Oxford, The United Kingdom.Google Scholar
  17. Gough L. and Grace J.B. (1998). Herbivore effects on plant species density at varying productivity levels. Ecology 79: 1586–1586CrossRefGoogle Scholar
  18. Gough M.W. and Marrs R.H. (1990). A comparison of soil fertility between semi-natural and agricultural plant communities: implications for the creation of species-rich grassland on abandoned agricultural land. Biological Conservation 51: 83–96CrossRefGoogle Scholar
  19. Grant S.A., Suckling D.E., Smith H.K., Torvell L., Forbes T.D.A. and Hodgson J. (1985). Comparative studies of the diet selection by sheep and cattle: the hill grasslands. J. Ecol. 73: 987–1004CrossRefGoogle Scholar
  20. Houba V.J.G. and der Lee J.J. (1995). Soil and Plant Analysis, a Series of Syllabi Part 5B: Soil Analysis Procedures, Other Procedures. Department of Soil Science and Plant Nutrition, Agricultural University, Wageningen, The NetherlandsGoogle Scholar
  21. Janssens F., Peeters A., Tallowin J.R.B., Bakker J.P., Bekker R.M., Fillat F. and Oomes M.J.M. (1998). Relationship between soil chemical factors and grassland diversity. Plant Soil 202: 69–78CrossRefGoogle Scholar
  22. Kleijn D. and Steinger T. (2002). Contrasting effects of grazing and hay cutting on the spatial and genetic population structure of Veratrum album an unpalatablelong-livedclonal plant species. J. Ecol. 90: 360–370CrossRefGoogle Scholar
  23. Koerselman W. and Meuleman A.F.M. (1996). The vegetation N:P ratio: a new tool to detect the nature of nutrient limitation. J. Appl. Ecol. 33: 1441–1450CrossRefGoogle Scholar
  24. Kohler B., Ryser P., Gusewell S. and Gigon A. (2001). Nutrient availability and limitation in traditionally mown and in abandoned limestone grasslands: a bioassay experiment. Plant Soil 230: 323–332CrossRefGoogle Scholar
  25. Lauber K. and Wagner G. (1998). Flora Helvetica. Haupt, Bern, SwitzerlandGoogle Scholar
  26. MacDonald D., Crabtree J.R., Weisinger G., Dax Y., Stamou N., Fleury P., Guttierez-Lazpita J. and Gibon A. (2000). Agricultural abandonment in mountain areas of Europe: environmental consequences and policy response. J. Environ. Manage. 59: 47–69CrossRefGoogle Scholar
  27. Muller P., Gusewell S. and Edwards P.J.(2003). Einfluss von Boden und Bewirtschaftung auf die Artenvielfalt der Vegetation auf Alpweiden im Glarnerland. Botanica Helvetica 113: 15–36Google Scholar
  28. Proulx M. and Mazumder A. (1998). Reversal of grazing impact on plant species richness in nutrient-poor vs. nutrient-rich ecosystems. Ecology 79: 2581–2592CrossRefGoogle Scholar
  29. Schlapfer F. and Fischer M. (1998). An isozyme study of clone diversity and relative importance of sexual and vegetative recruitment in the grass Brachypodium pinnatum. Ecography 21: 351–360CrossRefGoogle Scholar
  30. Schaffner U., Kleijn D., Brown V. and Muller-Scharer H. (2001). Veratrum album L. in montane grasslands: a model system for implementing biological control in land management practices of high biodiversity habitats. Biocontrol News and Information 22: 19N–28NGoogle Scholar
  31. Shaver G.R. and Chapin F.S.III (1995). Long-term responses to factorial, NPK fertilizer by Alaskan wet and moist tundra sedge species. Ecography 18: 259–275CrossRefGoogle Scholar
  32. Sokal R.R. and Rohlf F.J. (1995). Biometry. Freeman and Company, New York, USGoogle Scholar
  33. Spatz G. (1980). Succession patterns on mountain pastures. Vegetatio 43: 39–42CrossRefGoogle Scholar
  34. Todd S.W. and Hoffman M.T. (1999). A fence-line contrast reveals effects of heavy grazing on plant diversity and community composition in NamaqualandSouth Africa. Plant Ecol. 142: 169–178CrossRefGoogle Scholar
  35. UN/ECE. 2003. Kyiv resolution on biodiversity. Fifth Ministerial Conference `Environment for Europe', May 2003. Document ECE/CEP/108.United Nations, Economic Commission for EuropeKyiv, Ukraine, pp. 21–23Google Scholar

Copyright information

© Springer 2006

Authors and Affiliations

  1. 1.Department of Biology, Unit of Ecology & EvolutionUniversity of FribourgFribourgSwitzerland
  2. 2.Nature Conservation and Plant Ecology GroupWageningen UniversityWageningenThe Netherlands

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