Advantages of small-seeded species in forests: win-win for temporal and spatial dispersal among seeds in Rhododendron

• Autorzy: Wang H. , Lai X. , Zhang Y. , Chen H.
• Języki publikacji: EN

Abstrakty

EN

There is little consistent evidence for evolutionary associations from seed production to seedling fitness. In this study, 20 species of Rhododendron genus were selected from subtropical forests of southwest China; the life-history functional traits such as the seed size, seed number per twig, germination traits, dispersal and seedling survival were investigated, the ecological relationships among them were tested and the advantages of small-seeded species were discussed. The results show that the quantitative parameters of germination, such as the germination rate, potential, and index are positively correlated with seed number produced per stem, while temporal parameters, such as germination peak timing and duration are positively correlated with seed size. The two results indicate that different Rhododendron species with different seed sizes and relative seed number can deal with varying environments according to spatial dispersal or time dispersal, respectively, and the advantages of smaller seeds in the aspect of sprouting vigour, dispersal ability and seedling survival may lay the foundation for the establishment of small-seeded plants in the forest.

Słowa kluczowe

EN

Rhododendron; small-seed plant; seed number; seed size; seedling; seed germination; subtropical forest; China

• Wydawca: -
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2019
• Tom: 67
• Numer: 1
• Opis fizyczny: p.17-32,fig.,ref.

Twórcy

autor

Wang H.

• Department of Landscape, College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400716, China

autor

Lai X.

• Department of Landscape, College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400716, China

autor

Zhang Y.

• Department of Landscape, College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400716, China

autor

Chen H.

• Department of Botany, College of Horticulture and Landscape Architecture, Southwest University, Chongqing 400716, China

Bibliografia

• Aarssen L.W. 2000 – Why don’t bigger plants have proportionately bigger seeds?– Oikos, 111: 199–207.
• Aarssen L.W., Schamp B.S., Pither J. 2006 – Why are there so many small plants? Implications for species coexistence – J. Ecol.94: 569–580.
• Andersson S. 1996 – Seed size as a determinant of germination rate in Crepis tectorum (Asteraceae): Evidence from a seed burial experiment – Can. J. Bot.74: 568–572.
• Bazzaz F.A., Pitelka L.F. 1987 – Allocating resources to reproduction and defense – Biosci.37: 58–67.
• Blendinger P.G., Blake J.G., Loiselle B.A. 2011 – Connecting fruit production to seedling establishment in two co-occurring Miconia species: consequences of seed dispersal by birds in upper Amazonia – Oecologia, 167: 61–73.
• Bloom A.J., Mooney H.A. 1985 – Resource limitation in plants - an economic analogy – Ecol. Evol.16: 363–392.
• Bonfil C. 1998 – The effects of seed size, cotyledon reserves, and herbivory on seedling survival and growth in Quercus rugosa and Q. laurina (Fagaceae) – Am. J. Bot.85: 79–87.
• Bruun H.H., Ten Brink D.J. 2008 – Recruitment advantage of large seeds is greater in shaded habitats – Ecoscience, 15: 498–507.
• Bu H.Y., Du G.Z., Chen X.L., Xu X.L., Liu K., Wen S.J. 2008 – Community-wide germination strategies in an alpine meadow on the eastern Qinghai-Tibet plateau: phylogenetic and life-history correlates – Plant Ecol.195: 87–98.
• Celisdiez J.L., Bustamante R.O., Vasquez R.A. 2004 – Assessing frequency-dependent seed size selection: a field experiment – Biol. J. Linn. Soc.81: 30–312.
• Chen H., Niklas K.J., Yang D., Sun S. 2009 – The effect of twig architecture and seed number on seed size variation in subtropical woody species – New Phytologist, 183: 1212–1221.
• de Waal C., Anderson B., Ellis A.G. 2016 – Dispersal, dormancy and life-history tradeoffs at the individual, population and species levels in southern African Asteraceae – New Phytologist, 210: 356–365.
• den Boer P.J. 1968 – Spreading of risk and stabilization of animal numbers – Acta Biotheor.18: 165–194.
• Donohue K. 2002 – Germination timing influences natural selection on life-history characters in Arabidopsis thaliana– Ecology, 83: 1006–1016.
• Donohue K., Casas R.R.D., Burghardt L., Kovach K., Willis C.G. 2010 – Germination, postgermination adaptation, and species ecological ranges – Ann. Rev. Ecol. & Syst.41: 293–319.
• Eriksson O., Kainulainen K. 2011 – The evolutionary ecology of dust seeds – Perspect. Plant Ecol.13: 73–87.
• Fang M., Fang R., He M. 2005 – Flora of China – Science Press.
• Fang R., Ming M. 1994 – The floristic study on the genus Rhododendron– Acta Botanica Yunnanica, 17: 359–379.
• Forget P.M., Lambert J.E., Hulme P.E., Vander Wall S.B. 2006 – Seed fate: predation, dispersal and seedling establishment – Austral Ecol.31: 106–107.
• Garciafayos P., Recatala T.M., Cerda A., Calvo A.1995 – Seed population-dynamics on badland slopes in southeastern Spain – J. Veg. Sci.6: 691–696.
• Gomez J.M. 2004 – Bigger is not always better: Conflicting selective pressures on seed size in Quercus ilex– Evolution, 58: 71–80.
• Gremer J.R., Venable D.L. 2014 – Bet hedging in desert winter annual plants: optimal germination strategies in a variable environment – Ecol. Lett.17: 380–387.
• Grime J.P., Pierce S. 2012 – The evolutionary strategies that shape ecosystems – Wiley-Blackwell, 31 pp.
• Harper J. 1977 – Population biology of plants – Academic Press.
• Johnson E.A., Fryer G.I. 1992 – Physical characterization of seed microsites: Movement on the ground – J. Ecol.80: 823–836.
• Kosinski I. 2008 – Long-term variability in seed size and seedling establishment of Maianthemum bifolium– Plant Ecol.194: 149–156.
• Lehtila K., Ehrlen J. 2005 – Seed size as an indicator of seed quality: a case study of Primula veris– Acta Oecol.28: 207–212.
• Leishman M.R., Westoby M. 1994 – Hypotheses on seed size - tests using the semiarid flora of western New-South-Wales, Australia – Am. Nat.143: 890–906.
• Leishman M.R., Wright I.J., Moles A.T., Westoby M., Fenner M. 2000 – The ecology of regeneration in plant communities – CABI Publishing.
• Levin S.A., Mullerlandau H.C., Levin S., Iwasa Y. 2000 – The evolution of dispersal and seed size in plant communities – Evol. Ecol. Res.2: 409–435.
• Mishra Y., Rawat R., Rana P.K., Sonkar M.K., Mohammad N. 2014 – Effect of seed mass on emergence and seedling development in Pterocarpus marsupium Roxb – J. Forest Res.25: 415–418.
• Naito Y., Kanzaki M., Iwata H., Obayashi K., Lee S.L., Muhammad N., Okuda T., Tsumura Y. 2008 – Density-dependent self-ing and its effects on seed performance in a tropical canopy tree species, Shorea acuminata (Dipterocarpaceae) – Forest Ecol. Manag.256: 375–383.
• Obeso J.R., Martinez I., Garcia D. 2011 – Seed size is heterogeneously distributed among destination habitats in animal dispersed plants – Basic Appl. Ecol.12: 134–140.
• Oliva G., Collantes M., Humano G. 2013 – Reproductive effort and seed establishment in grazed tussock grass populations of Patagonia – Rangeland Ecol. Manag.66: 164–173.
• Petit S. 2011 – Effects of mixed-species pollen load on fruits, seeds, and seedlings of two sympatric columnar cactus species – Ecol. Res.26: 461–469.
• Pizo M.A., Von Allmen C., Morellato L.P.C. 2006 – Seed size variation in the palm Euterpe edulis and the effects of seed predators on germination and seedling survival – Acta Oecol.29: 311–315.
• Pugnaire F.I., Valladares F. 2007 – Functional plant ecology – CRC Press, 558 pp.
• Redwood M.E., Matlack G.R., Huebner C.D. 2016 – Seed longevity and dormancy state in a disturbance-dependent forest herb, Ageratina altissima – Seed Sci. Res.26: 148–152.
• Rees M. 1993 – Trade-offs among dispersal strategies in British plants – Nature, 366(6451): 150–152.
• Rees M. 1996 – Evolutionary ecology of seed dormancy and seed size – Philos. T. R. S. B351(1345): 1299–1308.
• Saatkamp A., Affre L., Dutoit T., Poschlod P. 2009 – The seed bank longevity index revisited: limited reliability evident from a burial experiment and database analyses – Ann. Bot.104: 715–724.
• Seiwa K. 2000 – Effects of seed size and emergence time on tree seedling establishment: importance of developmental constraints – Oecologia, 123: 208–215.
• Silvertown J. 1980 – Leaf-canopy-induced seed dormancy in a grassland flora – New Phytologist, 85: 109–118.
• Silvertown J., Dodd M. 1997 – Comparing plants and connecting traits (In: Plant life histories Silvertown, Ed: FrancoHarper J.) – Cam. Univ. Press, 3–16.
• Slatkin M. 1974 – Hedging one's evolutionary bet – Nature, 250(5469): 704–705.
• Smith C.C., Fretwell S.D. 1974 – Optimal balance between size and number of offspring – Am. Nat.108: 77–84.
• Smith J.A., Baumgartner L.J., Suthers I.M., Fielder D.S., Taylor M.D. 2013 – Density-dependent energy use contributes to the self-thinning relationship of cohorts – Am. Nat.181: 331–343.
• Sprugel D.G, Hinckley T.M., Schaap W. 1991 – The theory and practice of branch autonomy – Ecol. Evol. Syst.22: 309–334.
• Venable D.L., Brown J.S. 2010 – The selective interactions of dispersal, dormancy, and seed size as adaptations for reducing risk in variable environments – Am. Nat.131: 360–384.
• Volis S., Bohrer G. 2013 – Joint evolution of seed traits along an aridity gradient: seed size and dormancy are not two substitutable evolutionary traits in temporally heterogeneous environment – New Phytologist, 197: 655–667.
• Wang A.B., Tan D.Y., Baskin C.C., Baskin J.M. 2010 – Effect of seed position in spikelet on life history of Eremopyrum distans (Poaceae) from the cold desert of northwest China – Ann. Bot.106: 95–105.
• Zhang D. 2003 – Plant Life-History Evolution and Reproductive Ecology – Science Press, 62 pp.

Identyfikatory

DOI

10.3161/15052249PJE2019.67.1.002