Summary
To assess the scale of micro-environmental heterogeneity perceived by two co-occurring grass species, Anthoxanthum odoratum and Danthonia spicata, cloned tillers of each species were planted into the natural habitat at a range of spacings (from 2 cm to more than 2 m apart) and measured for survival and fecundity over three years. A. odoratum responded to heterogeneity at a scale of 4–8 cm and at a scale of 2–8 m but not to intermediate scales. D. spicata did not respond significantly to heterogeneity. However one genotype infected with the systemic fungus Atkinsonella hypoxylon showed a large response to heterogeneity at both small and large spatial scales. The results showed that the scale and level of environmental heterogeneity as measured by its fitness impact depends on the species and genotype involved. The results indicate that small scale environmental heterogeneity could play a role in the maintenance of sexual reproduction in A. odoratum.
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References
Antonovics J (1971) The effects of a heterogeneous environment on the genetics of natural populations. American Scientist 59:593–599
Antonovics J (1984) Genetic variation within populations. In: Dirzo R, and Sarukhan J (eds). Perspectives on Plant Population Ecology. pp 229–241. Sinauer
Antonovics J, Ellstrand NC (1984) Experimental studies of the evolutionary significance of sexual reproduction. I. A test of the frequency-dependent selection hypothesis. Evolution 38:103–115
Antonovics J, Ellstrand NC (1985) The fitness of dispersed progeny: experimental studies with Anthoxanthum odoratum. In: Heim G, Jacquard P, and Antonovics J (eds). Genetic Differentiation and Dispersal in Plants. pp 369–381. Springer-Verlag, Berlin
Antonovics J, Ellstrand NC, Brandon R (1987) Genetic variation and environmental variation: expectations and experiments. In: Jain SK, Gottlieb LD (eds). Plant Evol Biol (in press)
Antonovics J, Primack RB (1982) Experimental ecological genetics in Plantago. VI. The demography of seeding transplants of P. lanceolata. Journal of Ecology 70:55–75
Borton NH, Post RJ (1986) Sibling competition and the advantage of mixed families. Journal of Theoretical Biology 120:381–387
Bradshaw AD (1965) Evolutionary significance of phenotypic plasticity in plants. Advances in Genetics 13:115–155
Bulmer MA (1980) The sib competition model for the maintenance of sex and recombination. Journal of Theoretical Biology 82:335–345
Clay K (1982) Ecological and genetic consequences of cleistogamy in the grass Danthonia spicata. Ph.D. Thesis. Duke University, Durham, North Carolina, U.S.A.
Clay K (1984) The effect of the fungus Atkinsonella hypoxylon (Clavicipitaceae) on the reproductive system and demography of the grass Danthonia spicata. New Phytologist 98:165–175
Clements FE, Goldsmith GW (1924) The Phytometer Method in Ecology. Carnegie Institution of Washington. Publication No. 356
Efron B (1982) The Jackknife, the Bootstrap and Other Resampling Plans. Society for Industrial and Applied Mathematics, Philadelphia
Fowler NL, Antonovics J (1981a) Competition and coexistence in a North Carolina grassland. I. Patterns in undisturbed vegetation. Journal of Ecology 69:825–841
Fowler NL, Antonovics J (1981b) Small scale variability in the demography of transplants of two herbaceous species. Ecology 62:1450–1457
Jain SK, Bradshaw AD (1966) Evolutionary divergence among adjacent plant populations. I. The evidence and its theoretical analysis. Heredity 21:407–441
Hedrick PW, Ginevan ME, Ewing EP (1976) Genetic polymorphism in heterogeneous environments. Annual Review of Ecology and Systematics 7:1–32
Kelley SE (1985a) The mechanism of sib-competition for the maintenance of sexual reproduction in Anthoxanthum odoratum L. Ph.D. Thesis, Duke University, Durham, North Carolina, U.S.A.
Kelley SE (1985b) The effects of neighbors as environments: characterization of the competitive performance of Danthonia spicata genotypes. In: Heim G, Jacquard P, Antonovics J (eds). Genetic Differentiation and Dispersal in Plants. pp 203–221. Springer-Verlag, Berlin
Kelley SE, Clay K (1987) Interspecific competitive interactions and the maintenance of genotypic variation within two perennial grasses. Evolution (in press)
Levin R (1968) Evolution in Changing Environments. Princeton University Press
Maynard Smith J (1978) The Evolution of Sex. Cambridge University Press
McGraw JB, Antonovics J (1983) Experimental ecology of Dryas octopetala ecotypes. I. Ecotypic differentiation and life-cycle stages of selection. Journal of Ecology 71:879–897
Roach DA (1984) Ecological Genetics of Life-History Characteristics in Geranium carolinianum. Ph.D. Thesis. Duke University, Durham, North Carolina, U.S.A.
Schlichting CD (1986) The evolution of phenotypic plasticity in plants. Annual Review of Ecology and Systematics 17:667–693
Schmitt J, Antonovics J (1986) Experimental studies of the evolutionary significance of sexual reproduction III. Maternal and paternal effects during seedling establishment. Evolution 40:817–829
Stearns SC (1976) Life-history tactics: a review of ideas. Quarterly Review of Biology 51:3–49
Turkington R, Cahn MA, Vardy A, Harper JL (1979) The growth, distribution and relationships of Trifolium repens in a permanent pasture. III. The establishment and growth of Trifolium repens in natural and perturbed sites. Journal of Ecology 67:231–244
Williams GC (1975) Sex and Evolution. Princeton University Press
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Antonovics, J., Clay, K. & Schmitt, J. The measurement of small-scale environmental heterogeneity using clonal transplants of Anthoxanthum odoratum and Danthonia spicata . Oecologia 71, 601–607 (1987). https://doi.org/10.1007/BF00379305
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DOI: https://doi.org/10.1007/BF00379305