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Bacca quo vadis: Regeneration niche differences among seven sympatric Vaccinim species on headlands of Newfoundland

Published online by Cambridge University Press:  22 February 2007

Sam P. Vander Kloet  and
Nick M. Hill
Sam P. Vander Kloet*
Affiliation:
Biology Dept., Acadia University, Wolfville, Nova Scotia, Canada, B0P 1X0
Nick M. Hill
Affiliation:
Biology Dept., Mount Saint Vincent University, Halifax, Nova Scotia, Canada, B3M 2J6
*
*Fax: 902-445-3960 Email: Sam.VanderKloet@acadiau.ca
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Abstract

On headlands in Newfoundland, four of the seven sympatric Vaccinium species co-occur frequently at the quadrat level in tundra communities. We hypothesized that differentiation at the regeneration niche level was a prerequisite for the coexistence of these sympatric congeners. After a description and quantification of parameters affecting whole berry and seed dispersal and those affecting seed germination, differentiation at these two levels of the regeneration niches of the seven Vaccinia was investigated using numerical clustering techniques. Differentiation patterns were similar in both the germination and the dispersal dendrograms; three species were most dissimilar (viz. V. angustifolium, V. boreale and V. uliginosum), and the remaining four were separated into single species groups at the 62% and 75% similarity levels by the germination and dispersal dendrograms, respectively. Overall, patterns reflect divergence in dispersal mechanisms and germination abilities among the seven species, in support of the thesis that sympatric congeners have varied regeneration strategies. Differences in the germination success observed after testing natural dispersal units (e.g. seed from scat and seed within whole berries) points to the need to conduct germination trials in ecologically relevant ways. This approach reveals how divergent regeneration strategies are possible in species having similar, palatable baccate fruits (e.g. V. angustifolium and V. uliginosum) and highlights our lack of insight into regeneration strategies of the groups. The cranberry seeds, despite germination success gauged by results from standard germination protocols, exhibit no germination in trials conducted with the natural dispersal unit, the whole berry.

Type
Research Article
Information
Seed Science Research , Volume 10 , Issue 1 , March 2000 , pp. 89 - 97
Copyright
Copyright © Cambridge University Press 2000

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References

Baskin, C.C. and Baskin, J.M. (1998) Seeds: ecology, biogeography and evolution of dormancy and germination. New York, Academic Press.Google Scholar
Callaway, R.M. (1992) Effect of shrubs on recruitment of Quercus douglasii and Quercus lobata in California. Ecology 73, 2118–2128.CrossRefGoogle Scholar
Cipollini, M.L. and Levey, D.J. (1997) Secondary metabolites of fleshy vertebrate-dispersed fruits: adaptive hypotheses and implications for seed dispersal. American Naturalist 150, 346–372.CrossRefGoogle ScholarPubMed
Cipollini, M.L. and Stiles, E.W. (1992) Relative risks of fungal rot for temperate ericaceous fruits: effects of seasonal variation on selection for chemical defense. Canadian Journal of Botany 70, 1868–1877.CrossRefGoogle Scholar
Coville, F.V. (1910) Experiments in the berry culture. USDA Bulletin No.193. Washington, DC.Google Scholar
Cowling, R.M., Lamont, B.B. and Pierce, S.M. (1987) Seed bank dynamics of four co-occurring Banksia species. Journal of Ecology 75, 289–302.CrossRefGoogle Scholar
Crossland, D.R. and Vander Kloet, S.P.M. (1996) Berry consumption by the American Robin, Turdus migratorius, and the subsequent effect on seed germination, plant vigour, and dispersal of the lowbush bluebery, Vaccinium angustifolium. Canadian Field-Naturalist 110, 303–309.CrossRefGoogle Scholar
Eck, P. and Childers, N.F. (1966) Blueberry culture. New Brunswick, N.J., Rutgers University Press.Google Scholar
Eriksson, O. (1992) Evolution of seed dispersal and recruitment in clonal plants. Oikos 63, 439–448.CrossRefGoogle Scholar
Eriksson, O. and Froborg, H. (1996) “Windows of opportunity” for recruitment in long-lived clonal plants: experimental studies of seedling establishment in Vaccinium shrubs. Canadian Journal of Botany 74, 1369–1374.CrossRefGoogle Scholar
Fagerstrom, T. and Agren, G.I. (1979) Theory for co-existence of species differing in regeneration properties. Oikos 33, 1–10.CrossRefGoogle Scholar
Gill, D.S. and Marks, P.L. (1991) Tree and shrub seedling colonisation of old fields in central New York. Ecological Monographs 61, 183–206.CrossRefGoogle Scholar
Grubb, P.J. (1977) The maintenance of species richness plant communities. The importance of the regeneration niche. Biological Review 52, 107–145.CrossRefGoogle Scholar
Grubb, P.J. (1986) Some generalising ideas aboutcolonisation and succession in green plants and fungi. pp. 81–102, in Gray, A.J., Crawley, M.J., Edwards, P. (Eds.) Colonization, succession and stability. Oxford, Blackwell Scientific Publishers.Google Scholar
Hobbs, R.J. and Mooney, H.A. (1985) Community and population dynamics of serpentine grassland annuals relation to gopher disturbance. Oecologia 67, 342–351.CrossRefGoogle ScholarPubMed
Huston, M.A. (1979) A general hypothesis of species diversity. American Naturalist 113, 81–101.CrossRefGoogle Scholar
Kubitzki, K. (1996) Origins of East and Southeast Asian plant diversity. pp. 56–70, in Suging, W. (Ed.) Floristics, characteristics and diversity of East Asian plants. Berlin, Springer-Verlag.Google Scholar
Lavorel, S. and Chesson, P. (1995) How species with different regeneration niches coexist in patchy habitats with local disturbance. Oikos 74, 103–114.CrossRefGoogle Scholar
Lusk, C.H. and Smith, B. (1998) Life history differences and tree species coexistence in an old-growth New Zealandrain forest. Ecology 79, 795–806.CrossRefGoogle Scholar
Maillette, L. (1988) Apparent commensalism among three Vaccinium species on a climatic gradient. Journal Ecology 76, 877–888.CrossRefGoogle Scholar
Meyer, G.A. and Witmer, M.C. (1998) Influence of seed processing by frugivorous birds on germination success of three North American shrubs. American Midland Naturalist 140, 129–139.CrossRefGoogle Scholar
Meyer, S.E., Kitchen, S.G. and Carlson, S.L. (1995) Seed germination timing patterns in intermountain Penstemon (Scrophulariaceae). American Journal of Botany 82, 377–389.CrossRefGoogle Scholar
Mustart, P.J. and Cowling, R.M. (1993) The role regeneration stages in the distribution of edaphically restricted fynbos Proteaceae. Ecology 74, 1490–1499.CrossRefGoogle Scholar
Plyler, D.B. and Proseus, T.E. (1996) A comparison of the seed dormancy characteristics of Spartina patens and Spartina alterniflora (Poaceae). American Journal of Botany 83, 11–14.CrossRefGoogle Scholar
Rabinowitz, D. and Rapp, J.K. (1985) Colonisation and establishment of Missouri prairie plants on artificial soil disturbances. II. Detecting small-scale plant to plant interactions and separating disturbance from resource provision. American Journal of Botany 72, 1629–1634.CrossRefGoogle Scholar
Rohlf, F.J. (1993) NTSYS-pc-Numerical taxonomy and multi-variate analysis system. Version 1.80. Setauket, N.Y., Exeter Software.Google Scholar
Siemens, D.H., Johnson, C.D. and Ribardo, K.J. (1992) Alternative seed defense mechanisms in congeneric plants. Ecology 73, 2152–2166.CrossRefGoogle Scholar
Sokal, R.R. and Rohlf, F.J. (1995) Biometry: The principles and practice of statistics in biological research, 3rd ed. New York, W.H.Freeman.Google Scholar
Thompson, K., Hillier, S.H., Grime, J.P., Bossard, C.C. and Band, S.R. (1996) A functional analysis of a limestone grassland community. Journal of Vegetation Science 7, 371–380.CrossRefGoogle Scholar
Tilman, D. (1983) Resource competition and community structure. Princeton, N.J., Princeton University Press.Google Scholar
Vander Kloet, S.P. (1983) The taxonomy of Vaccinium Section Oxycoccus. Rhodora 85, 1–43.Google Scholar
Vander Kloet, S.P. (1988) The genus Vaccinium in North America. Research Branch, Agriculture Canada, Ottawa.Google Scholar
Vander Kloet, S.P. and Hill, N.M. (1994) The paradox of berry production in temperate species of Vaccinium. Canadian Journal of Botany 72: 52–58.CrossRefGoogle Scholar
Vander Pijl, L. (1972) Principles of dispersal in higher plants. Berlin, Springer-Verlag.CrossRefGoogle Scholar
Vasquez-Yanes, C. and Orozco-Segovia, A. (1994) Signals for seeds to sense and respond to gaps. pp. 209–236in Caldwell, M.M. and Pearcy, R.W. (Eds.). Exploitation of environmental heterogeneity by plants. New York, Academic Press.CrossRefGoogle Scholar
Vieno, M., Komulainen, M. and Neuvonen, S. (1993) Seed bank composition in a subarctic pine-birch forest in Finnish Lapland: natural variation and the effects of simulated acid rain. Canadian Journal of Botany 71, 379–384.CrossRefGoogle Scholar
Wayne, P.M. and Bazzaz, F.A. (1993) Birch seedling responses to daily time courses of light in experimental forest gaps and shadehouses. Ecology 74, 1500–1515.CrossRefGoogle Scholar