Spatial patterns in defoliation and the expression of clonal traits in grazed meadows

Botany

Volumn 89, Issue 1, 2011, Pages 43-54

  Benot, Marie Lise ^a   Bonis, Anne ^a   Rossignol, Nicolas ^a,b   Mony, Cendrine ^a  

^a UNIVERSITÉ DE RENNES 1   (France)

^b UMR1213 HERBIVORES   (France)

Author keywords

Cattle grazing; Correlogams; Fine scale; Spatial heterogeneity; Vegetation height

Indexed keywords

CATTLE; CLONAL GROWTH; DATABASE; DEFOLIATION; GRAZING; HETEROGENEITY; MEADOW; SPATIOTEMPORAL ANALYSIS; VEGETATION DYNAMICS;

BOS;

EID: 78951492291     PISSN: 19162804     EISSN: None     Source Type: Journal    
DOI: 10.1139/B10-082     Document Type: Article

References (97)

1. Adler, P.B., Raff, D.A., and Lauenroth, W.K. 2001. The effect of grazing on the spatial heterogeneity of vegetation. Oecologia (Berl.), 128(4): 465-479. doi:10.1007/s004420100737.
2. Adler, P.B., Milchunas, D.G., Lauenroth, W.K., Sala, O.E., and Burke, I. 2004. Functional traits of graminoids in semi-arid steppes: a test of grazing histories. J. Appl. Ecol. 41(4): 653-663. doi:10.1111/j.0021-8901.2004.00934.x.
3. Adler, P.B., Milchunas, D.G., Sala, O.E., Burke, I., and Lauenroth, W.K. 2005. Plant traits and ecosystem grazing effects: comparison of U.S. sagebrush steppe and Patagonian steppe. Ecol. Appl. 15(2): 774-792. doi:10.1890/04-0231.
4. Amiaud, B. 1998. Dynamique végétale d'un écosystème prairial soumis á différentes modalités de pǎturage. Exemple des communaux du Marais Poitevin (Dynamics of a prairial ecosystem submittedto different grazing regimes. Example of common wet meadows in the Marais Poitevin). Ph.D. thesis, Université de Rennes 1, Rennes.
5. Amiaud, B., Bonis, A., and Bouzillé, J.B. 2000. Conditions de germination et rǒle des herbivores dans la dispersion et le recrutement d'une espèce clonale: Juncus gerardi Lois. Can. J. Bot. 78(11): 1430-1439. doi:10.1139/cjb-78-11-1430.
6. Anderson, T.M., McNaughton, S.J., and Ritchie, M.E. 2004. Scaledependent relationships between the spatial distribution of a limiting resource and plant species diversity in an African grassland ecosystem. Oecologia (Berl.), 139(2): 277-287. doi:10.1007/s00442-004-1499-1.
7. Augustine, D.J. 2003. Spatial heterogeneity in the herbaceous layer of a semi-arid savanna ecosystem. Plant Ecol. 167(2): 319-332. doi:10.1023/A:1023927512590.
8. Augustine, D.J., and Frank, D.A. 2001. Effects of migratory grazers on spatial heterogeneity of soil nitrogen properties in a grassland ecosystem. Ecology, 82(11): 3149-3162. doi:10.1890/0012-9658(2001)082[3149:EOMGOS]2.0.CO;2.
9. Bakker, J.P., de Leeuw, J., and van Wieren, E. 1983. Micropatterns in grassland vegetation created and sustained by sheepgrazing. Vegetatio, 55(3): 153-161. doi:10.1007/BF00045017.
10. Bakker, C., Blair, J.M., and Knapp, A.K. 2003. Does resource availability, resource heterogeneity or species turnover mediate changes in plant species richness in grazed grasslands? Oecologia (Berl.), 137(3): 385-391. doi:10.1007/s00442-003-1360-y.
11. Bell, T.L., and Ojeda, F. 1999. Underground starch storage in Erica species of the Cape Floristic Region differences between seeders and resprouters. New Phytol. 144(1): 143-152. doi:10.1046/ j.1469-8137.1999.00489.x.
12. Bell, A.D., and Tomlinson, P.B. 1980. Adaptive architecture in rhizomatous plants. Bot. J. Linn. Soc. 80(2): 125-160. doi:10.1111/j.1095-8339.1980.tb01662.x.
13. Bellingham, P.J., and Sparrow, A.D. 2000. Resprouting as a life history strategy in woody plant communities. Oikos, 89(2): 409-416. doi:10.1034/j.1600-0706.2000.890224.x.
14. Briske, D.D. 1996. Strategies of plant survival in grazed systems: a functional interpretation. In The ecology and management of grazing systems. Edited by J. Hodgson and A.W. Illius. CAB International, Wallingford, UK. pp. 33-67.
15. Briske, D.D., and Silvertown, J.W. 1993. Plant demography and grassland community balance: the contribution of population regulation mechanisms. In Proceedings of the XVII International Grassland Congress. Edited by M.J. Bakes. SIR Publishing, Wellington, UK. pp. 291-298.
16. Cain, M.L. 1994. Consequences of foraging in clonal plant species. Ecology, 75(4): 933-944. doi:10.2307/1939417.
17. Caraco, T., and Kelly, C.K. 1991. On the adaptive value of physiological integration in clonal plants. Ecology, 72(1): 81-93. doi:10.2307/1938904.
18. Cheplick, G.P. 1997. Responses to severe competitive stress in a clonal plant: differences between genotypes. Oikos, 79(3): 581-591. [doi.] doi:10.2307/3546902.
19. Cheplick, G.P., and Chui, T. 2001. Effect of competitive stress on vegetative growth, storage, and regrowth after defoliation in Phleum pratense. Oikos, 95(2): 291-299. doi:10.1034/j.1600-0706.2001.950211.x.
20. Chessel, D., Dufour, A.B., and Thioulouse, J. 2004. The ade4 package-I -One-table methods. R News, 4(1): 5-10.
21. Collins, S.L., and Smith, M.D. 2006. Scale-dependent interaction of fire and grazing on community heterogeneity in tallgrass prairie. Ecology, 87(8): 2058-2067. doi:10.1890/0012-9658(2006)87[2058:SIOFAG]2.0.CO;2. PMID:16937645.
22. Couvreur, M., Verheyen, K., Vellend, M., Lamoot, I., Cosyns, E., Hoffmann, M., and Hermy, M. 2008. Epizoochory by large herbivores: merging data with models. Basic Appl. Ecol. 9(3): 204-212. doi:10.1016/j.baae.2006.12.002.
23. D'Hertefeldt, T., and Falkengren-Grerup, U. 2002. Extensive physiological integration in Carex arenaria and Carex disticha in relation to potassium and water availability. New Phytol. 156(3): 469-477. doi:10.1046/j.1469-8137.2002.00529.x.
24. D'Hertefeldt, T., and Jónsdóttir, I.S. 1999. Extensive physiological integration in intact clonal systems of Carex arenaria. J. Ecol. 87(2): 258-264. doi:10.1046/j.1365-2745.1999.00345.x.
25. de Bello, F., Lepš, J., and Sebastiá, M.T. 2005. Predictive value of plant traits to grazing along a climatic gradient in the Mediterranean. J. Appl. Ecol. 42(5): 824-833. doi:10.1111/j.1365-2664. 2005.01079.x.
26. de Kroon, H., and Schieving, F. 1990. Resource partitioning in relation to clonal growth strategy. In Clonal growth in plants: regulation and function. Edited by J.M. van Groenendael and H. de Kroon. SPB Academic Publishing, The Hague, Netherlands. pp. 113-130.
27. Díaz, S., Noy-Meir, I., and Cabido, M. 2001. Can grazing response of herbaceous plants be predicted from simple vegetative traits? J. Appl. Ecol. 38(3): 497-508. doi:10.1046/j.1365-2664.2001.00635.x.
28. Díaz, S., Lavorel, S., McIntyre, S., Falczuk, V., Casanoves, F., Michunas, D.G., Skarpe, C., Rusch, G., Sternberg, M., Noy-Meir, I., Landsberg, J., Zhang, W., Clark, H., and Campbell, B.D. 2007. Plant trait responses to grazing a global synthesis. Glob. Change Biol. 13(2): 313-341. doi:10.1111/j.1365-2486.2006.01288.x.
29. Diggle, P. 2003. Statistical analysis of spatial point patterns. Arnold, London, UK.
30. Dong, M., and de Kroon, H. 1994. Plasticity in morphology and biomass allocation in Cynodon dactylon, a grass species forming stolons and rhizomes. Oikos, 70(1): 99-106. doi:10.2307/3545704.
31. Dong, M., and Pierdominici, M.G. 1995. Morphology and growth of stolons and rhizomes in three clonal grasses, as affected by different light supply. Vegetatio, 116(1): 25-32. doi:10.1007/BF00045274.
32. Fahrig, L., Coffin, D.P., Lauenroth, W.K., and Shugart, H.H. 1994. The advantage of long-distance clonal spreading in highly disturbed habitats. Evol. Ecol. 8(2): 172-187. doi:10.1007/BF01238248.
33. Fischer, M., and van Kleunen, M. 2002. On the evolution of clonal plant life histories. Evol. Ecol. 15(4-6): 565-582. doi:10.1023/A:1016013721469.
34. Fuhlendorf, S.D., and Engle, D.M. 2001. Restoring heterogeneity on rangelands: ecosystem management based on evolutionary grazing patterns. Bioscience, 51(8): 625-632. doi:10.1641/0006-3568(2001)051[0625:RHOREM]2.0.CO;2.
35. Fuhlendorf, S.D., and Smeins, F.E. 1999. Scaling effects of grazing in a semi-arid grassland. J. Veg. Sci. 10(5): 731-738. doi:10.2307/3237088.
36. Goldberg, D.E., and Landa, K. 1991. Competitive effect and response: hierarchies and correlated traits in the early stages of competition. J. Ecol. 79(4): 1013-1030. doi:10.2307/2261095.
37. Gómez, S., and Stuefer, J.F. 2006. Members only: induced systemic resistance to herbivory in a clonal plant network. Oecologia (Berl.), 147(3): 461-468. doi:10.1007/s00442-005-0293-z.
38. Grime, J.P. 1977. Evidence for the existence of three primary strategies in plants and its relevance to ecological and evolutionary theory. Am. Nat. 111(982): 1169-1194. doi:10.1086/283244.
39. Gross, N., Suding, K., and Lavorel, S. 2007. Leaf dry matter content and lateral spread predict response to land use change for six subalpine grassland species. J. Veg. Sci. 18(2): 289-300. doi:10.1111/j.1654-1103.2007.tb02540.x.
40. Grubb, P.J. 1977. The maintenance of species-richness in plant communities: the importance of the regeneration niche. Biol. Rev. Camb. Philos. Soc. 52(1): 107-145. doi:10.1111/j.1469-185X.1977.tb01347.x.
41. Hartnett, D.C. 1989. Density- and growth stage-dependent responses to defoliation in two rhizomatous grasses. Oecologia (Berl.), 80(3): 414-420. doi:10.1007/BF00379045.
42. Herms, D.A., and Mattson, W.J. 1992. The dilemma of plants: to grow or defend. Q. Rev. Biol. 67(3): 283-335. doi:10.1086/417659.
43. Huntly, N. 1991. Herbivores and the dynamic of communities and ecosystems. Annu. Rev. Ecol. Syst. 22(1): 477-503. doi:10. 1146/annurev.es.22.110191.002401.
44. Hutchings, M.J. 1999. Clonal plants as cooperative systems: benefits in heterogeneous environments. Plant Species Biol. 14(1): 1-10. doi:10.1046/j.1442-1984.1999.00001.x.
45. Hutchings, M.J., and Bradbury, I.K. 1986. Ecological perspectives on clonal perennial herbs. Bioscience, 36(3): 178-182. doi:10. 2307/1310305.
46. Hutchings, M.J., and Mogie, M. 1990. The spatial structure of clonal plants: control and consequences. In Clonal growth in plants: regulation and function. Edited by J.M. van Groenendael and H. de Kroon. SPB Academic Publishing, The Hague, Netherlands. pp. 57-78.
47. Iwasa, Y., and Kubo, T. 1997. Optimal size of storage for recovery after unpredictable disturbances. Evol. Ecol. 11(1): 41-65. doi:10.1023/A:1018483429029.
48. Jónsdóttir, I.S., and Callaghan, T.V. 1989. Localized defoliation stress and the movement of 14C-photoassimilates between tillers of Carex bigelowii. Oikos, 54: 211-219. doi:10.2307/3565269.
49. Jónsdóttir, I.S., and Watson, M.A. 1997. Extensive physiological integration: an adaptive trait in resource-poor environments? In The ecology and evolution of clonal plants. Edited by H. de Kroon and J.M. van Groenendael. Backhuys Publishers, Leiden, Netherlands. pp. 109-136.
50. Jónsdóttir, I.S., Augner, M., FagerstrÖm, T., Persson, H., and StenstrÖm, A. 2000. Genet age in marginal populations of two clonal Carex species in the Siberian Arctic. Ecography, 23(4): 402-412. doi:10.1034/j.1600-0587.2000.240303.x.
51. Kelly, C.K. 1995. Thoughts on clonal integration: facing the evolutionary context. Evol. Ecol. 9(6): 575-585. doi:10.1007/BF01237656.
52. Klimeš, L., Klimešová, J., Hendricks, R., and van Groenendael, J. 1997. Clonal plant architecture: a comparative analysis of form and function. In The ecology and evolution of clonal plants. Edited by H. de Kroon and J.M. van Groenendael. Backhuys Publishers, Leiden, Netherlands. pp. 1-2.
53. Klimešová, J., and de Bello, F. 2009. CLO-PLA: the database of clonal and bud bank traits of Central European flora. J. Veg. Sci. 20(3): 511-516. doi:10.1111/j.1654-1103.2009.01050.x.
54. Klimešová, J., and Klimeš, L. 2003. Resprouting of herbs in disturbed habitats: is it adequately described by Bellingham -Sparrow's model? Oikos, 103(1): 225-229. doi:10.1034/j. 1600-0706.2003.12725.x.
55. Klimešová, J., and Klimeš, L. 2007. Bud banks and their role in vegetative regeneration -a literature review and proposal for simple classification assessment. Perspect. Plant Ecol. Evol. Syst. 8(3): 115-129. doi:10.1016/j.ppees.2006.10.002.
56. Klimešová, J., and Klimeš, L. 2008. Clonal growth diversity and bud banks of plants in the Czech flora: an evaluation using the CLO-PLA3 database. Preslia, 80(3): 255-275.
57. Kun, A., and Oborny, B. 2003. Survival and competition of clonal plant populations in spatially and temporally heterogeneous habitats. Comm. Ecol. 4(1): 1-20. doi:10.1556/ComEc.4.2003.1.1.
58. Lattanzi, F.A., Schnyder, H., and Thornton, B. 2004. Defoliation effects on carbon and nitrogen substrate import and tissue-bound efflux in leaf growth zones of grasses. Plant Cell Environ. 27(3): 347-356. doi:10.1046/j.1365-3040.2004.01147.x.
59. Lavorel, S., McIntyre, S., Landsberg, J., and Forbes, T.D.A. 1997. Plant functional classifications: from general groups to specific groups based on response to disturbance. Trends Ecol. Evol. 12(12): 474-478. doi:10.1016/S0169-5347(97)01219-6.
60. Loucougaray, G., Bonis, A., and Bouzillé, J.B. 2004. Effects of grazing by horses and/or cattle on the diversity of coastal grasslands in western France. Biol. Conserv. 116(1): 59-71. doi:10.1016/S0006-3207(03)00177-0.
61. Lovett-Doust, L. 1981. Population dynamics and local specialization in a clonal perennial (Ranunculus repens). I. The dynamics of ramets in contrasting habitats. J. Ecol. 69(3): 743-755. doi:10.2307/2259633.
62. Macek, P., and Lepš, J. 2003. The effect of environmental heterogeneity on clonal behaviour of Prunella vulgaris L. Plant Ecol. 168(1): 31-43. doi:10.1023/A:1024460525317.
63. McLellan, A.J., Prati, D., Kaltz, O., and Schmid, B. 1997. Structure and analysis of phenotypic and genetic variation in clonal plants. In The ecology and evolution of clonal plants. Edited by H. de Kroon and J.M. van Groenendael. Backhuys Publishers, Leiden, Netherlands. pp. 185-210.
64. Ménard, C., Duncan, P., Fleurance, G., George, J.Y., and Lila, M. 2002. Comparative foraging and nutrition in horses and cattle in Europe wetlands. J. Appl. Ecol. 39(1): 120-133. doi:10.1046/j. 1365-2664.2002.00693.x.
65. Morvan-Bertrand, A., Boucaud, J., Le Saos, J., and Prud'homme, M.P. 2001. Roles of the fructans from leaf sheaths and from the elongating leaf bases in the regrowth following defoliation of Lolium perenne L. Planta, 213(1): 109-120. doi:10.1007/ s004250000478. PMID:11523646.
66. Mouissie, A.M., Vos, P., Verhagen, H.M.C., and Bakker, J.P. 2005. Endozoochory by free-ranging, large herbivores: ecological correlates and perspectives for restoration. Basic Appl. Ecol. 6(6): 547-558. doi:10.1016/j.baae.2005.03.004.
67. Olofsson, J., de Mazancourt, C., and Crawley, M.J. 2008. Spatial heterogeneity and plant species richness at different spatial scales under rabbit grazing. Oecologia (Berl.), 156(4): 825-834. doi:10.1007/s00442-008-1038-6.
68. Oom, S.P., Sibbald, A.M., Hester, A.J., Miller, D.R., and Legg, C.J. 2008. Impacts of sheep grazing a complex vegetation mosaic: relating behavior to vegetation change. Agric. Ecosyst. Environ. 124(3-4): 219-228. doi:10.1016/j.agee.2007.09.014.
69. Pakeman, R.J. 2004. Consistency of plant species and trait responses to grazing along a productivity gradient: a multi-site analysis. J. Ecol. 92(5): 893-905. doi:10.1111/j.0022-0477. 2004.00928.x.
70. Pakeman, R.J., Pywell, R.F., and Wells, T.C.E. 2002. Species spread and persistence: implications for experimental design and habitat re-creation. Appl. Veg. Sci. 5(1): 75-86. doi:10. 1658/1402-2001(2002)005[0075:SSAPIF]2.0.CO;2.
71. Pitelka, L.F., and Ashmun, J.W. 1985. Physiology and integration of ramets in clonal plants. In Population biology and evolution of clonal organisms. Edited by J.B.C. Jackson, L.W. Buss, andR.E. Cook. Yale University Press, New Haven, Conn. pp. 399-435.
72. Posse, G., Anchorena, J., and Collantes, M.B. 2000. Spatial micropatterns in the steppe of Tierra del Fuego induced by sheep grazing. J. Veg. Sci. 11(1): 43-50. doi:10.2307/3236774.
73. Puijalon, S., Bouma, T.J., van Groenendael, J., and Bornette, G. 2008. Clonal plasticity of aquatic plant species submitted to mechanical stress: escape versus resistance strategy. Ann. Bot. (Lond.), 102(6): 989-996. doi:10.1093/aob/mcn190.
74. R Development Core Team. 2008. R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-900051-07-0. Available from www.R-project.org.
75. Richards, J.H. 1993. Physiology of plants recovering from defoliation. In Proceedings of the XVII International Grassland Congress. Edited by M.J. Bakes. SIR Publishing, Wellington, UK. pp. 85-94.
76. Rietkerk, M., Ketner, P., Burger, J., Hoorens, B., and Olff, H. 2000. Multiscale soil and vegetation patchiness along a gradient of herbivore impact in a semi-arid grazing system in West-Africa. Plant Ecol. 148(2): 207-224. doi:10.1023/A:1009828432690.
77. Rossi, R.E., Mulla, D.J., Journel, A.G., and Franz, E.H. 1992. Geostatistical tools for modeling and interpreting ecological spatial dependence. Ecol. Monogr. 62(2): 277-314. doi:10.2307/2937096.
78. Rossignol, N., Bonis, A., and Bouzillé, J.B. 2006. Consequence of grazing pattern and vegetation structure on the spatial variations of net N mineralisation in a wet grassland. Appl. Soil Ecol. 31(1-2): 62-72. doi:10.1016/j.apsoil.2005.04.004.
79. Rossignol, N., Chadoeuf, J., Carrére, P., and Dumont, B. In press.A hierarchical model for analysing the stability of vegetation patterns created by grazing in temperate pastures. Appl. Veg. Sci. doi:10.1111/j.1654-109X.2010.01106.x.
80. Sammul, M., Kull, K., Niitla, T., and Möls, T. 2004. A comparison of plant communities on the basis of their clonal growth patterns. Evol. Ecol. 18(5-6): 443-467. doi:10.1007/s10682-004-5139-3.
81. Schmid, B. 1985. Clonal growth in grassland perennials. II. Growth form and fine-scale colonizing ability. J. Ecol. 73(3): 809-818. doi:10.2307/2260148.
82. Schwinning, S., and Parsons, A.J. 1999. The stability of grazing system revisited: spatial models and the role of heterogeneity. Funct. Ecol. 13(6): 737-747. doi:10.1046/j.1365-2435.1999.00382.x.
83. Stewart, K.E.J., Bourn, N.A.D., and Thomas, J.A. 2001. An evaluation of three quick methods commonly used to assess sward height in ecology. J. Appl. Ecol. 38(5): 1148-1154. doi:10.1046/j.1365-2664.2001.00658.x.
84. Stuefer, J.F. 1996. Potential and limitations of current concepts regarding the response of clonal plants to environmental heterogeneity. Vegetatio, 127(1): 55-70. doi:10.1007/BF00054847.
85. Stuefer, J.F., and Huber, H. 1999. The role of stolon internodes for ramet survival after clone fragmentation in Potentilla anserina. Ecol. Lett. 2(3): 135-139. doi:10.1046/j.1461-0248.1999.00066.x.
86. Suzuki, J.I., and Stuefer, J. 1999. On the ecological and evolutionary significance of storage in clonal plants. Plant Species Biol. 14(1): 11-17. doi:10.1046/j.1442-1984.1999.00002.x.
87. Tamm, A., Kull, K., and Sammul, M. 2002. Classifying clonal growth forms based on vegetative mobility and ramet longevity: a whole community analysis. Evol. Ecol. 15(4-6): 383-401. doi:10.1023/A:1016093116926.
88. van Groenendael, J.M., Klimeš, L., Klimešová, J., and Hendricks, R. 1996. Comparative ecology of clonal plants. Philos. Trans. R. Soc. Lond. B Biol. Sci. 351(1345): 1331-1339. doi:10.1098/rstb.1996.0116.
89. Veen, G.F., Blair, J.M., Smith, M.D., and Collins, S.L. 2008. Influence of grazing and fire frequency on small-scale plant community structure and resource variability in native tallgrass prairie. Oikos, 117(6): 859-866. doi:10.1111/j.0030-1299.2008.16515.x.
90. WallisDeVries, M.F., Laca, E.A., and Demment, M.W. 1999. The importance of scale of patchiness for selectivity in grazing herbivores. Oecologia (Berl.), 121(3): 355-363. doi:10.1007/s004420050939.
91. Weber, G.E., Jeltsch, F., van Rooyen, N., and Milton, S.J. 1998. Simulated long-term vegetation response to grazing heterogeneity in semi-arid rangelands. J. Appl. Ecol. 35(5): 687-699. doi:10.1046/j.1365-2664.1998.355341.x.
92. Westoby, M. 1998. A leaf-height-seed (LHS) plant ecology strategy scheme. Plant Soil, 199(2): 213-227. doi:10.1023/A:1004327224729.
93. Wijesinghe, D.K., and Hutchings, M.J. 1997. The effects of spatial scale of environmental heterogeneity on the growth of a clonal plant: an experimental study with Glechoma hederacea. J. Ecol. 85(1): 17-28. doi:10.2307/2960624.
94. Wijesinghe, D.K., and Hutchings, M.J. 1999. The effects of environmental heterogeneity on the performance of Glechoma hederacea: the interactions between patch contrast and patch scale. J. Ecol. 87(5): 860-872. doi:10.1046/j.1365-745.1999.00395.x.
95. Wolfer, S.R., van Nes, E.H., and Straile, D. 2006. Modelling the clonal growth of the rhizomatous macrophyte Potamogeton perfoliatus. Ecol. Model. 192(1-2): 67-82. doi:10.1016/j.ecolmodel.2005.06.009.
96. Zhou, Z., Sun, O.J., Luo, Z., Jin, H., Chen, Q., and Han, X. 2008. Variation in small-scale spatial heterogeneity of soil properties and vegetation with different land use in semiarid grassland ecosystem. Plant Soil, 310(1-2): 103-112. doi:10.1007/s11104-008-9633-1.
97. Zobel, M., Moora, M., and Herben, T. 2010. Clonal mobility and its implications for spatio-temporal patterns of plant communities: what do we need to know next? Oikos, 119(5): 802-806. doi:10.1111/j.1600-0706.2010.18296.x.