Abstract
In order to better understand the factors governing community assembly on riverine islands, we conducted a greenhouse experiment that examined the effects of species interactions in combination with flooding that mimicked hydrologic gradients found on Mississippi River islands. Specifically, we examined the effects of inter and intra-specific competition and three disturbance treatments (drained, drought, and flood) on the growth performance of three island-ubiquitous herbaceous plant species (Amaranthus palmeri, Cyperus strigosus. and Xanthium strumarium). We predicted a decrease in interspecific competitive effects in disturbance treatments. Specifically, we expected A palmeri to be most affected by flooding treatment based on its facultative upland status suggesting that it should be a poor tolerator of flooded conditions. X. strumarium and C. strigosus both facultative wetland species in their status, should tolerate flooding, but we predict that C. strigosus should have greater stress tolerance due to its perennial life history. Because we find these species coexisting at the same elevation zones on riverine islands, we also predicted stronger intraspecific competition effects. Our results indicate that disturbance indeed affected competitive interactions, but the effects were species-specific. X. strumarium showed stronger competitive effects when grown with conspecifics while C. strigosus experienced greater competition with heterospecifics under drought treatments. Based on its wetland indicator status and life history characteristics, we expected A palmeri to exhibit a facilitative effect, as it is typically an upland species, but instead it was impacted most by interspecific competition. Our study indicates that factors other than competition, facilitation, and flood tolerance (e.g., priority effects) may be controlling island plant community dynamics, further studies are required.
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Abbreviations
- DW:
-
Dry weight
- FAC-U:
-
Facultative Upland
- FAC-W:
-
Facultative Wetland
- IDH:
-
Intermediate disturbance hypothesis
- lnRR:
-
Log Response Ratio
- SGH:
-
Stress-gradient hypothesis
References
Ambasht, R.S. 1977. Observations on the ecology of noxious weeds on Ganga River banks at Varanasi, India. Vol.1, p. 109-115: 6th Asian-Pacific Weed Science Society Conference, Indonesia.
Anderson, J.M. and C.G. McWhorter. 1976. The economics of common cocklebur control in soybean production. Weed Science 24: 397–400.
Bartelherimer, M., D. Gowing and J. Silvertown. 2010. Explaining hydrological niches: the decisive role of below-ground competition in two closely related Sececio species. J. Ecol. 98: 126– 136.
Bensch, C.N., M.J. Horak and D. Peterson. 2003. Interference ofred-root pigweed (Amaranthus retroflexus), Palmer amaranth (A. palmeri), and common waterhemp (A. rudis) in Soybean. Weed Sci. 51: 37–43.
Bertness, M. and R.M. Callaway. 1994. Positive interactions in communities. Trends Ecol. Evol. 9: 191–193.
Brooker, R.W., F.T. Maestre, R.M. Callaway, C.L. Lortie, L.A. Cavieres, G. Kunstler, P. Liancourt, K. Tielbörger, J.M.J. Travis, F. Anthelme, C. Armas, L. Coll, E. Corcket, S. Delzon, E. Forey, Z. Kikvidze, J. Olofsson, F. Pugnaire, C.L. Quiroz, P. Saccone, K. Schiffers, M. Seifan, B. Touzard and R. Michalet. 2008. Facilitation in plant communities: the past, the present, and the future. J. Ecol. 96: 18–34.
Brooker, R.W., D. Scott, S.C.F. Palmer and E. Swaine. 2006. Transient facilitative effects of heather on Scots pine along a grazing disturbance gradient in Scottish moorland. J. Ecol. 94: 637–645.
Callaway, R.M. 1995. Positive interactions among plants. Bot. Rev. 61: 306–349.
Callaway, R.M. 2007. Positive Interactions and Interdependence in Plant Communities. Springer, Dordrecht.
Chase, J.M. 2007. Drought mediates the importance of stochastic community assembly. Proc. Nat. Acad. Sci., USA. 104: 17430– 17434.
Chesson, P. and N. Huntly. 1997. The roles of harsh and fluctuating conditions in the dynamics of ecological communities. Am. Nat. 150: 519–533.
Crawley, M.J. 1990. The population dynamics of plants. Phil. Trans. R. Soc. London (B) 330: 125–140.
Davis, M.A., Grime, J.P. and Thompson, K. 2000. Fluctuating resources in plant communities: a general theory of invasibility. J Ecol. 88: 528–534.
Eriksson, O. and L. Jerling. 1990. Hierarchical selection and risk spreading in clonal plants. In: J. van Groenendael and H. de Kroon (eds.), Clonal Growth in Plants: Regulation and Function. SPB Academic Publishing, The Hague, pp. 79–94.
Fukami, T., T.M. Bezemer, S.R. Mortimer and W.H. van der Putten. 2005. Species divergence and trait convergence in experimental plant community assembly. Ecol. Lett. 8: 1283–1290.
Gaudet, C.L. and P.A. Keddy. 1995. Competitive performance and species distribution in shoreline plant communities: A comparative approach. Ecology 76: 280–291.
Goldberg, D.E. 1996. Competitive ability: definitions, contingency and correlated traits. Phil. Trans. R. Soc. London (B) 351: 1377– 1385.
Goldberg, D.E., and A.M. Barton. 1992. Patterns and consequences of interspecific competition in natural communities: A review of field experiments with plants. Am. Nat. 139: 771– 801.
Grace, J.B. 1999. The factors controlling species density in herbaceous plant communities: an assessment. Perspectives Plant Ecol. Evol. Syst. 2: 1–28.
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: 1169–1194.
Hegazy, A.K. and W. Moser. 1991. Water use efficiency, photosynthesis, extreme temperature and drought tolerance of desert plant seedlings. Folia Geobot. 26: 263–276.
Huston, M. 1979. A general hypothesis ofspecies diversity.Am. Nat. 113: 81–101.
Jones, R.H. and R.R. Sharitz .1989. Potential advantages and disadvantages of germinating early for trees in floodplain forests. Oe-cologia. 81: 443–449.
Kaul, V. 1968. Physiological ecology of Xanthium strumarium L. V. Water Relations. Trop. Ecol. 9: 88–102.
Leck, M.A. and W. Shütz. 2005. Regeneration of Cyperaceae, with particular reference to seed ecology and seed banks. Perspectives Plant Ecol. Evol. Syst.7: 95–133.
Lenssen, J.P.M., H.M. van de Steeg and H. de Kroon. 2004. Does disturbance favour weak competitiors? Mechanisms of changing plant abundance after flooding. J. Veg. Sci. 15: 305–314.
Lockwood, J.L., P. Cassey and T.M. Blackburn. 2009. The more you introduce the more you get: the role ofcolonization pressure and propagule pressure in invasion ecology. Diversity Distrib. 15: 904–910.
Löve, D. and P. Dansereau. 1959. Biosystematic studies on Xan-thium: taxonomic appraisal and ecological status. Can. J. Bot. 37: 173–208.
Moore, J.E., S.B. Franklin and J.W. Grubaugh. 20XX. Herbaceous plant community responses to fluctuations in hydrology: Using Mississippi River islands as models for plant community assembly. In Review.
Moore, J.E. and E.P. Lacey. 2009. A comparison of germination and early growth of four early successional tree species of the Southeastern United States in different soil and water regimes. Am. Mid. Nat. 162: 388–394.
Muller-Landau, H.C. 2010. The tolerance-fecundity trade-off and the maintenance of diversity in seed size. Proc. Nat. Acad. Sci., USA. 107: 4242–4247.
Pennings, S.C. and R.M. Calloway. 1992. Salt marsh plant zonation: the relative importance of competition and physical factors. Ecology 73: 681–690.
Reed, C.F. and R. Hughes. 1970. Selected weeds of the United States. U.S. Dept. Agric. Handbook. 366. p. 463.
SAS. 2003. SAS 9.1. SAS Institute Inc., Cary, NC, USA.
Sellers, B.A., R.J. Smeda, W.G. Johnson, J.A. Kendig and M.R. El-lersieck. 2003. Comparative growth of six Amaranthus species in Missouri. Weed Sci. 51: 329–333.
Simmons, M.T. 2005. Bullying the bullies: The selective control of an exotic, invasive annual (Rapistrum rugosum) by oversowing with a competitive native species (Gaillardia pulchella). Restor. Ecol. 13: 609–615.
Suding, K.N. and D.Goldberg. 2001. Do disturbances alter competitive hierarchies? Mechanisms of change following gap creation. Ecology 82: 2133–2149.
Steckel, L.E., C.L. Sprague, E.W. Stoller and L.M. Wax. 2004. Temperature effects on germination on nine Amaranthus species. Weed Sci. 52: 217–221.
Streng, D.R., J.S. Glitzenstein, and P.A. Harbombe. 1989. Woody seedling dynamics in an east Texas floodplain forest. Ecol. Monogr. 59: 177–204.
Tilman, D. 1988. Plant Strategies and the Dynamics and Structure of Plant Communities. Princeton University Press, Princeton.
Tilman, D. and S. Pacala. 1993. The maintenance of species richness in plant communities. In: R.E. Ricklefs and D. Schluter (eds.), Species Diversity in Ecological Communities. University of Chicago Press, Chicago. pp. 13–25.
Turkington, R., E. Klein and C.P. Chanway. 1993. Interactive effects of nutrients and disturbance: an experimental test of plant strategy theory. Ecology 74: 863–878.
USDA, NRCS. 2010. The PLANTS Database (https://doi.org/plants.usda.gov, 28 November 2010). National Plant Data Center, Baton Rouge, LA 70874–4490 USA.
Weaver, S.E. and M.J. Lechowicz. 1982. The biology of Canadian Weeds. 56. Xanthium strumarium L. Can. J. Plant Sci. 63: 211– 225.
Wedin, D. and D. Tilman. 1993. Competition among grasses along a nitrogen gradient: initial conditions and mechanisms of competition. Ecol. Monogr. 63: 199–229.
Wilson, S.D. and P.A. Keddy. 1986. Measuring diffuse competition along an environmental gradient: results from a shoreline plant community. Am. Nat. 127: 862–869.
Wilson, S.D. and D. Tilman. 1993. Plant competition and resource availability in response to disturbance and fertilization. Ecology 74: 599–611.
Wolden, L.G., J.C. Stromberg and D.T. Patten. 1995. Flora and Vegetation of the Hassayampa River Preserve Maricopa County, Arizona. J. Arizona-Nevada Acad. Sci. 28: 76–111.
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Moore, J.E., Franklin, S.B. Understanding the relative roles of disturbance and species interactions in shaping Mississippi River island plant communities. COMMUNITY ECOLOGY 12, 108–116 (2011). https://doi.org/10.1556/ComEc.12.2011.1.13
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DOI: https://doi.org/10.1556/ComEc.12.2011.1.13