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Seedling herbivory and the influence of plant species richness in seedling neighbourhoods

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Abstract

The aim of this experiment was to determine how increasing species richness within artificially created grassland gaps affected the overall magnitude of seedling losses to, and the selectivity of, seedling herbivores. Using chemical exclusion methods, the influence of molluscs the principal invertebrate herbivores in temperate grasslands, was assessed at three levels of plant species diversity (3, 6, and 12 species per gap). In comparison with ungrazed controls, mollusc herbivory significantly reduced seedling numbers. However, the total number of seedlings killed by molluscs was unrelated to the number of seedling species present in the gap. Furthermore, there was no evidence to suggest that seedling species diversity influenced rates of mollusc selection of the three individual species (Agrostis capillaris, Senecio jacobaeae, and Taraxacum officinale) present in each diversity treatment. This work highlights the preferential selection by molluscs of broad-leaved herb species over neighbouring grass seedlings. However the results also suggest that when presented with an increasing choice of different seedling species, the overall magnitude and selectivity of seedling removal by molluscs remains unchanged.

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References

  • Andow D.A. 1990. Population dynamics of an insect herbivore in simple and diverse habitats. Ecology 71: 1006–1017.

    Google Scholar 

  • Bergelson J. 1990. Spatial patterning in plants: opposing effects of herbivory and competition. Journal of Ecology 78: 937–948.

    Google Scholar 

  • Borges P.A.V. and Brown V.K. 2001. Phytophagous insects and web-building spiders in relation to pasture vegetation complexity. Ecography 24: 68–82.

    Google Scholar 

  • Brown J.B. and Ewel J.J. 1987. Herbivory in complex and simple tropical successional ecosystems. Ecology 68: 108–116.

    Google Scholar 

  • Clapham A.R., Tutin T.G. and Moore D.M. 1987. Flora of the British Isles. 3rd edn. Cambridge University Press, Cambridge.

    Google Scholar 

  • Cottam D.A. 1985. Frequency-dependent grazing by slugs and grasshoppers. Journal of Ecology 73: 925–933.

    Google Scholar 

  • Crawley M.J. 1997. Plant Ecology. 2nd edn. Blackwell Scientific publications, Oxford.

    Google Scholar 

  • Edwards G.R. and Crawley M.J. 1999a. Rodent seed predation and seedling recruitment in mesic grassland. Oecologia 118: 288–296.

    Google Scholar 

  • Edwards G.R. and Crawley M.J. 1999b. Herbivores, seed banks and seedling recruitment in mesic grassland. Journal of Ecology 87: 423–435.

    Google Scholar 

  • Feeny P. 1976. Plant apparency and chemical defence. In: Wallace J.W. and Mansell R.L. (eds), Biochemical Interactions Between Plants and Insects. Plenum Press, New York, pp. 1–40.

    Google Scholar 

  • Fenner M., Hanley M.E. and Lawrence R. 1999. Comparison of seedling and adult palatability in annual and perennial plants. Functional Ecology 13: 546–551.

    Google Scholar 

  • Green P.T., Lake P.S. and O'Dowd D.J. 1997. Control of seedling recruitment by land crabs in rain forest on a remote oceanic island. Ecology 78: 2474–2486.

    Google Scholar 

  • Grime J.P., McPherson-Stewart S.F. and Dearman R.S. 1968. An investigation of leaf palatability using the snail Cepaea nemoralis. Journal of Ecology 56: 405–420.

    Google Scholar 

  • Hanley M.E. 1998. Seedling herbivory, community composition and plant life history traits. Perspectives in Plant Ecology, Evolution and Systematics 1: 191–205.

    Google Scholar 

  • Hanley M.E. and Fenner M. 1997. Molluscicides and seedling performance of four grassland plant species. Journal of Applied Ecology 34: 1479–1483.

    Google Scholar 

  • Hanley M.E. and Lamont B.B. 2001. Herbivory, serotiny and seedling defence in Western Australian Proteaceae. Oecologia 126: 409–417.

    Google Scholar 

  • Hanley M.E. and Lamont B.B. 2002. Relationships between physical and chemical attributes of congeneric seedlings: how important is seedling defence? Functional Ecology 16: 216–222.

    Google Scholar 

  • Hanley M.E., Fenner M. and Edwards P.J. 1995a. An experimental field study of the effects of mollusc grazing on seedling recruitment and survival in grassland. Journal of Ecology 83: 621–627.

    Google Scholar 

  • Hanley M.E., Fenner M. and Edwards P.J. 1995b. The effect of seedling age on the likelihood of herbivory by the slug Deroceras reticulatum. Functional Ecology 9: 754–759.

    Google Scholar 

  • Hanley M.E., Fenner M. and Edwards P.J. 1996. The effect of mollusc grazing on seedling recruitment in artificially created grassland gaps. Oecologia 106: 240–246.

    Google Scholar 

  • Harper J.L. 1977. The Population Biology of Plants. Academic Press, London.

    Google Scholar 

  • Hector A. et al. 1999. Plant diversity and productivity experiments in European grasslands. Science 286: 1123–1127.

    PubMed  Google Scholar 

  • Hooper D.U. and Vitousek P.M. 1997. The effects of plant composition and diversity on ecosystem processes. Science 277: 1302–1305.

    Google Scholar 

  • Howe H.F., Brown J.S. and Zorn-Arnold B. 2002. A rodent plague on prairie diversity. Ecological Letters 5: 30–36.

    Google Scholar 

  • Hulme P.E. 1994. Seedling herbivory in grassland: relative impact of vertebrate and invertebrate herbivores. Journal of Ecology 82: 873–880.

    Google Scholar 

  • Hulme P.E. 1996. Herbivores and the performance of grassland plants: a comparison of arthropod, mollusc and rodent herbivory. Journal of Ecology 84: 43–51.

    Google Scholar 

  • Izhaki I. and Ne'eman G. 1997. The effect of porcupine and bast scale on Aleppo pine recruitment after fire. Acta Oecologica 17: 97–107.

    Google Scholar 

  • Meiners S.J., Handel S.N. and Pickett S.T.A. 2000. Tree seedling establishment under insect herbivory: edge effects and interannual variation. Plant Ecology 151: 161–170.

    Google Scholar 

  • Mulder C.P.H., Koricheva J., Huss-Danell K., Hogberg P. and Joshi J. 1999. Insects affect relationships between plant species richness and ecosystem processes. Ecology Letters 2: 237–246.

    Google Scholar 

  • Risch S.J., Andow D. and Altieri M.A. 1983. Agroecosystem diversity and pest control: data, tentative conclusion, and new research directions. Environmental Entomology 12: 625–629.

    Google Scholar 

  • Root R.B. 1973. Organization of a plant-arthropod association in simple and diverse habitats: the fauna of collards (Brassica oleracea). Ecological Monographs 43: 94–124.

    Google Scholar 

  • Siemann E. 1998. Experimental tests of effects of plant productivity and diversity on grassland arthropod diversity. Ecology 79: 2057–2070.

    Google Scholar 

  • Tilman D., Wedin D. and Knops J. 1996. Productivity and sustainability influenced by biodiversity in grassland ecosystems. Nature 379: 718–720.

    Google Scholar 

  • Tilman D., Knops J., Wedin D., Reich P., Ritchie M. and Siemann E. 1997. The influence of functional diversity and composition on ecosystem processes. Science 277: 1300–1302.

    Google Scholar 

  • Underwood A.J. 1997. Experiments in Ecology. Cambridge University Press, Cambridge.

    Google Scholar 

  • Wardle D.A. and Barker G.M. 1997. Competition and herbivory in establishing grassland communities: implications for plant biomass, species diversity, and soil microbial activity. Oikos 80: 470–480.

    Google Scholar 

  • Wardle D.A., Bonner K.I., Barker G.M., Yeates G.W., Nicholson K.S., Bardgett R.D. et al. 1999. Plant removals in perennial grassland: vegetation dynamics, decomposers, soil biodiversity and ecosystem properties. Ecological Monographs 69: 535–568.

    Google Scholar 

  • Wilby A. and Brown V.K. 2001. Herbivory, litter and soil disturbance as determinants of vegetation dynamics during old-field succession under set-aside. Oecologia 127: 259–265.

    Google Scholar 

  • Yamashita Y., Jones R.M. and Nicholson C.H.L. 1979. Feeding of slugs (Deroceras sp. and Lehmania nytelia) on subtropical pasture species, particularly Kenya white clover (Trifoilum semipilosum) Cv. Safari. Journal of Applied Ecology 16: 307–318.

    Google Scholar 

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Hanley, M. Seedling herbivory and the influence of plant species richness in seedling neighbourhoods. Plant Ecology 170, 35–41 (2004). https://doi.org/10.1023/B:VEGE.0000019022.48043.56

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  • DOI: https://doi.org/10.1023/B:VEGE.0000019022.48043.56

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