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Seed longevity and dormancy state in a disturbance-dependent forest herb, Ageratina altissima

Published online by Cambridge University Press:  10 March 2016

Mame E. Redwood ,
Glenn R. Matlack  and
Cynthia D. Huebner
Mame E. Redwood
Affiliation:
Environmental and Plant Biology, Porter Hall, Ohio University, Athens, Ohio 45701, USA
Glenn R. Matlack*
Affiliation:
Environmental and Plant Biology, Porter Hall, Ohio University, Athens, Ohio 45701, USA
Cynthia D. Huebner
Affiliation:
Northern Research Station, USDA Forest Service, Morgantown, West Virginia, USA
*
*Correspondence Email: [email protected]
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Abstract

Does seed dormancy allow disturbance-oriented forest herbs such as Ageratina altissima to persist in heterogeneous natural communities? To document seed longevity and dormancy state, Ageratina seeds were buried in nylon mesh bags in second-growth forest stands in south-eastern Ohio, USA. Bags were recovered at 2-month intervals, and seeds were tested for viability and germinability in the lab. Live seed numbers declined rapidly, with seed banks exhausted in an estimated 33–37 months. Seeds showed a strong dormancy polymorphism, with 71–84% of live seeds germinable between March and July, the season of natural seedling emergence. At other dates, most seeds appeared to be in a state of induced dormancy, allowing little (0–21%) germination. The slope aspect of the burial site, an important factor controlling above-ground vegetation, had no effect on seed longevity or dormancy condition. Dormancy in Ageratina appears to be adapted to allow opportunistic germination in late spring–early summer, but to prevent germination in less benign periods. Seed longevity is shorter than the natural frequency of gaps in mesophytic forest. We conclude that a long-term dispersal/dormancy trade-off is probably an oversimplification of the spatial ecology of this species. The primary function of dormancy appears to be short-term tracking of seasonal variation.

Keywords

Ageratinabet-hedgingdispersalenvironmental heterogeneityEupatoriumgerminationinduced dormancy
Type
Research Papers
Information
Seed Science Research , Volume 26 , Issue 2 , June 2016 , pp. 148 - 152
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Copyright
Copyright © Cambridge University Press 2016 

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References

Allen, P.S. and Meyer, S.E. (1998) Ecological aspects of seed dormancy loss. Seed Science Research 8, 183–191.Google Scholar
Barden, L.S. (1989) Repeatability in forest gap research: studies in the Great Smoky Mountains. Ecology 70, 558–559.Google Scholar
Carey, P.D. and Watkinson, A.R. (1993) The dispersal and fates of seeds of the winter annual grass Vulpia ciliata . Journal of Ecology 81, 759–767.Google Scholar
Clewell, A.F. and Wooten, J.W. (1971) A revision of Ageratina (Compositae: Eupatorieae) from Eastern North America. Brittonia 23, 123–143.Google Scholar
Crawley, M.J. (2007) The R Book. New York, John Wiley & Sons.Google Scholar
Densmore, R.E. (1979) Aspects of seed ecology of woody plants of the Alaskan taiga and tundra. Dissertation, Duke University, Durham, North Carolina.Google Scholar
Donohue, K. (2005) Seeds and seasons: interpreting germination timing in the field. Seed Science Research 15, 175–187.Google Scholar
Gadgil, M. (1971) Dispersal: population consequences and evolution. Ecology 52, 253–261.Google Scholar
Gibson, D.J., Spyreas, G. and Benedict, J. (2002) Life history of Microstegium vimineum (Poaceae), an invasive grass in southern Illinois. Journal of the Torrey Botanical Society 129, 207–219.CrossRefGoogle Scholar
Harper, J.L. (1977) Population biology of plants. New York, Academic Press.Google Scholar
Honek, A., Martinkova, Z. and Jarosik, V. (1999) Annual cycles of germinability and differences between primary and secondary dormancy in buried seeds of Echinochloa crus-galli . Weed Research 39, 69–79.Google Scholar
Huebner, C.D. (2011) Seed mass, viability, and germination of Japanese stiltgrass (Microstegium vimineum) under variable light and moisture conditions. Invasive Plant Science and Management 4, 274–283.CrossRefGoogle Scholar
Hyatt, L.A. and Casper, B.B. (2000) Seed bank formation during early secondary succession in a temperate deciduous forest. Journal of Ecology 88, 516–527.CrossRefGoogle Scholar
Jankowska-Blaszczuk, M. and Grubb, P.J. (1997) Soil seed banks in primary and secondary forest in Bialowieza, Poland. Seed Science Research 7, 281–292.Google Scholar
Landenberger, R.E. and Ostergren, D.A. (2002) Eupatorium rugosum (Asteraceae) flowering as an indicator of edge effect from clearcutting in mixed-mesophytic forest. Forest Ecology and Management 155, 55–68.Google Scholar
Lau, J.M. and Robinson, D.L. (2010) Phenotypic selection for seed dormancy in white snakeroot (Eupatorium rugosum). Weed Biology and Management 10, 241–248.Google Scholar
Leckie, S., Vellend, M., Bell, G., Waterway, M.J. and Lechowicz, M.J. (2000) The seed bank in an old-growth, temperate deciduous forest. Canadian Journal of Botany 78, 181–192.Google Scholar
Matlack, G.R. (1987). Diaspore size, shape, and fall behavior in wind dispersed plant species. American Journal of Botany 74, 1150–1160.Google Scholar
Matlack, G.R. and Good, R.E. (1990) Spatial heterogeneity in the soil seed bank of a mature coastal plain forest. Bulletin of the Torrey Botanical Club 117, 143–152.Google Scholar
McPeek, M.A. and Kalisz, S. (1998) The joint evolution of dispersal and dormancy in metapopulations. Archive fur Hydrobiologie 52, 33–51.Google Scholar
Nuzzo, V.A., McClain, W. and Strole, T. (1996). Fire impact on groundlayer flora in a sand forest 1990–1994. American Midland Naturalist 136, 207–221.Google Scholar
Olivero, A.M. and Hix, D.M. (1998) Influence of aspect and stand age on ground flora of southeastern Ohio forest ecosystems. Plant Ecology 139, 177–187.Google Scholar
Pake, C.E. and Venable, D.L. (1996) Seedbanks in desert annuals: implications for persistence and coexistence in variable environments. Ecology 77, 1427–1435.Google Scholar
Pickett, S.T. (1989) Space-for-time substitution as an alternative to long-term studies. pp. 110–135 in Likens, G.E. (Ed.) Long-term studies in ecology: Approaches and alternatives. New York, Springer-Verlag.Google Scholar
R Core Team (2013) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. Available at http://www.R-project.org/ (accessed 19 February 2016).Google Scholar
Reader, R.J. and Bricker, B.D. (1992) Response of five deciduous forest herbs to partial canopy removal and patch size. American Midland Naturalist 127, 149–157.Google Scholar
Rees, M. (1993) Tradeoffs among dispersal strategies in British plants. Nature 366, 150–152.CrossRefGoogle Scholar
Roman, E.S., Murphy, S.D. and Swanton, C.J. (2000) Simulation of Chenopodium album seedling emergence. Weed Science 48, 217–224.Google Scholar
Runkle, J.R. (1985) Disturbance regimes in temperate forests. pp. 17–33 in Pickett, S.T.A.; White, P.S. (Eds) The ecology of natural disturbance and patch dynamics. New York, Academic Press.Google Scholar
Sarukhán, J. (1974) Studies on plant demography – Ranunculus repens L., R. bulbosus L., and R. acris L. Journal of Ecology 52, 151–177.Google Scholar
Van Mourik, T.A., Stomph, T.D. and Murdoch, A.J. (2005) Why high seed densities within buried mesh bags may overestimate depletion rates of soil seed banks. Journal of Applied Ecology 42, 299–305.Google Scholar
Venable, D.L. and Brown, J.S. (1988) The selective interactions of dispersal, dormancy, and seed size as adaptations for reducing risk in variable environments. American Naturalist 131, 360–384.CrossRefGoogle Scholar
Walck, J.L., Baskin, C.C. and Baskin, J.M. (1997) Comparative achene germination requirements of the rockhouse endemic Ageratina luciae-brauniae and its widespread close relative A. altissima (Asteraceae). American Midland Naturalist 137, 1–12.Google Scholar