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Redundancy and niche differentiation among the European invasive Elodea species

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Abstract

Community ecologists implicitly assume redundancy when they aggregate species into functional groups. But there have been remarkably few empirical efforts to investigate the accuracy of this concept in situ. The concept of redundancy could be roughly split into two components: the ecological redundancy (similar response to environmental variations involving similar ecological processes) and the functional redundancy (similar biological trait combinations shaping similar functional processes). Both types of redundancy are tested among the 3 invasive European Elodeas. In 11 sites and during two successive years 2004–2005, the cover growth rate of each Elodea species was monthly recorded. To test ecological redundancy, cover growth rates were related to a large suite of environmental variables. To test functional redundancy, 13 biological traits involved in competitive relationships were measured each month. Firstly, the redundancy hypothesis looks problematic for Elodea ernstiae. Indeed, the later possess numerous biological traits involved in light competition and niche overlap with the other Elodeas is very low. Secondly, ecological and functional redundancy can be successfully applied to Elodea canadensis and Elodea nuttallii. They share a large suite of biological traits leading to wide niche overlaps through the growing season. And the measured environmental variables do not differentially influence their growth rates, which are, in turn, controlled by a similar group of biological traits. In this way, the different invasiveness patterns of E. canadensis and E. nuttallii could be solely due to the ecological drift and their ecological dynamic could follow neutral rules.

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References

  • Agrawal AA (2001) Phenotypic plasticity in the interactions and evolution of species. Science 294:321–326

    Article  PubMed  CAS  Google Scholar 

  • Barrat-Segretain MH (2005) Competition between invasive and indigenous species: impact of spatial pattern and developmental stage. Plant Ecol 180:153–160

    Article  Google Scholar 

  • Barrat-Segretain MH, Elger A, Sagnes P, Puijalon S (2002) Comparison of three life-history traits of invasive Elodea canadensis Michx. and Elodea nuttallii (Planch.) H. St. John. Aquat Bot 74:299–313

    Article  Google Scholar 

  • Blumenthal D (2005) Interrelated causes of plant invasion. Science 310:243–244

    Article  PubMed  CAS  Google Scholar 

  • Callaway RM, Aschehoug ET (2000) Invasive plants versus their new and old neighbors: a mechanism for exotic invasion. Science 290:521–523

    Article  PubMed  CAS  Google Scholar 

  • Davis MA, Grime JP, Thompson K (2000) Fluctuating resources in plant communities: a general theory of invasibility. J Ecol 88:528–534

    Article  Google Scholar 

  • DeWitt TJ, Sih A, Wilson DS (1998) Costs and limits of phenotypic plasticity. Trends Ecol Evol 13:77–81

    Article  Google Scholar 

  • Di Nino F (2002) Caractérisation morphogénétique des Elodées de Loraine et de la plaine d’Alsace—Mémoire du DEA en Toxicologie de l’Environnement. Université de Metz, Metz

    Google Scholar 

  • Didham RK, Tylianakis JM, Hutchison MA, Ewers RM, Gemmell NJ (2005) Are invasive species the drivers of ecological change? Trends Ecol Evol 20:470–474

    Article  PubMed  Google Scholar 

  • Gitay H, Wilson JB, Lee WG (1996) Species redundancy: a redundant concept? J Ecol 84:121–124

    Article  Google Scholar 

  • Greulich S, Trémolières M (2006) Present distribution of the genus Elodea in the Alsatian Upper Rhine floodplain (France) with a special focus on the expansion of Elodea nuttallii St. John during recent decades. Hydrobiologia 570:249–255

    Article  Google Scholar 

  • Gurevitch J, Padilla DK (2004) Are invasive species a major cause of extinctions? Trends Ecol Evol 19:470–474

    Article  PubMed  Google Scholar 

  • Hérault B (in press) Reconciling niche and neutrality through the emergent group approach. Perspect Plant Ecol Evol Syst. doi:10.1016/j.ppees.2007.08.001

  • Hubbell SP (2001) The unified neutral theory of biodiversity and biogeography. Princeton University Press, Princeton

    Google Scholar 

  • Hubbell SP (2005) Neutral theory in community ecology and the hypothesis of functional equivalence. Funct Ecol 19:166–172

    Article  Google Scholar 

  • Hurlbert SH (1984) Pseudoreplication and the design of ecological experiment. Ecol Monogr 54:187–211

    Article  Google Scholar 

  • James CS, Eaton JW, Hardwick K (1999) Competition between three submerged macrophytes, Elodea canadensis Michx, Elodea nuttallii (Planch.) St John and Lagarosiphon major (Ridl.) moss. Hydrobiologia 415:35–40

    Article  Google Scholar 

  • James CS, Eaton JW, Hardwick K (2006) Responses of three invasive aquatic macrophytes to nutrient enrichment do not explain their observed field displacements. Aquat Bot 84:347–353

    Article  CAS  Google Scholar 

  • Jones JI, Eaton JW, Hardwick K (2000) The effect of changing environmental variables in the surrounding water on the physiology of Elodea nuttallii. Aquat Bot 66:115–129

    Article  Google Scholar 

  • Keane RM, Crawley MJ (2002) Exotic plant invasions and the enemy release hypothesis. Trends Ecol Evol 17:164–170

    Article  Google Scholar 

  • Kennedy TA, Naeem S, Howe KM, Knops JMH, Tilman D, Reich P (2002) Biodiversity as a barrier to ecological invasion. Nature 417:636–638

    Article  PubMed  CAS  Google Scholar 

  • Klironomos JN (2002) Feedback with soil biota contributes to plant rarity and invasiveness in communities. Nature 417:67–70

    Article  PubMed  CAS  Google Scholar 

  • Kolar CS, Lodge DM (2001) Progress in invasion biology: predicting invaders. Trends Ecol Evol 16:199–204

    Article  PubMed  Google Scholar 

  • Lee CE (2002) Evolutionary genetics of invasive species. Trends Ecol Evol 17:386–391

    Article  Google Scholar 

  • Legendre P, Legendre L (1998) Numerical ecology. Elsevier, Amsterdam

    Google Scholar 

  • Lonsdale WM (1999) Global patterns of plant invasions and the concept of invasibility. Ecology 80:1522–1536

    Article  Google Scholar 

  • Loreau M (2004) Does functional redundancy exist? Oikos 104:606–611

    Article  Google Scholar 

  • Manly BFJ (1998) Randomization, bootstrap and Monte Carlo methods in biology. Chapman & Hall, London

    Google Scholar 

  • McGill BJ, Enquist BJ, Weiher E, Westoby M (2006) Rebuilding community ecology from functional traits. Trends Ecol Evol 21:178–185

    Article  PubMed  Google Scholar 

  • Miner BG, Sultan SE, Morgan SG, Padilla DK, Relyea RA (2005) Ecological consequences of phenotypic plasticity. Trends Ecol Evol 20:685–692

    Article  PubMed  Google Scholar 

  • Mouillot D, Stubbs W, Faure M, Dumay O, Tomasini J, Wilson JB, Chi T (2005) Niche overlap estimates based on quantitative functional traits: a new family of non-parametric indices. Oecologia 145:345–353

    Article  PubMed  Google Scholar 

  • Naeem S (1998) Species redundancy and ecosystem reliability. Conserv Biol 12:39–45

    Article  Google Scholar 

  • Olesen B, Madsen TV (2000) Growth and physiological acclimation to temperature and inorganic carbon availability by two submerged aquatic macrophyte species, Callitriche cophocarpa and Elodea canadensis. Funct Ecol 14:252–260

    Article  Google Scholar 

  • Root R (1967) The niche exploitation pattern of the blue-gray gnatcatcher. Ecol Monogr 37:317–350

    Article  Google Scholar 

  • Rosenfeld JS (2002) Functional redundancy in ecology and conservation. Oikos 98:156–162

    Article  Google Scholar 

  • Scheffer M, van Nes EH (2006) Self-organized similarity, the evolutionary emergence of groups of similar species. Proc Natl Acad Sci USA 103:6230–6235

    Article  PubMed  CAS  Google Scholar 

  • Schlichting CD (1986) The evolution of phenotypic plasticity in plants. Annu Rev Ecol Syst 17:667–693

    Article  Google Scholar 

  • Shea K, Chesson P (2002) Community ecology theory as a framework for biological invasions. Trends Ecol Evol 17:170–176

    Article  Google Scholar 

  • Simpson DA (1984) A short history of the introduction and spread of Elodea Michx in the British Isles. Watsonia 15:1–9

    Google Scholar 

  • Simpson DA (1988) Phenotypic plasticity of Elodea nuttallii (Planch) H. St. John and Elodea canadensis Michx. in the British Isles. Watsonia 17:121–132

    Google Scholar 

  • Simpson DA (1990) Displacement of Elodea canadensis Michx by Elodea nuttallii (Planch.) H. St. John in the British Isles. Watsonia 18:173–177

    Google Scholar 

  • Sultan SE (2000) Phenotypic plasticity for plant development, function and life history. Trends Plant Sci 5:537–542

    Article  PubMed  CAS  Google Scholar 

  • Van der Putten WH (2002) How to be invasive. Nature 417:32–33

    Article  PubMed  CAS  Google Scholar 

  • Walker BH (1992) Biodiversity and ecological redundancy. Conserv Biol 6:18–23

    Article  Google Scholar 

  • Weiher E, van der Werf A, Thompson K, Roderick M, Garnier E, Eriksson O (1999) Challenging Theophrastus: a common core list of plant traits for functional ecology. J Veg Sci 10:609–620

    Article  Google Scholar 

  • Willby NJ, Abernethy VJ, Demars BOL (2000) Attribute-based classification of European hydrophytes and its relationship to habitat utilization. Freshwater Biol 43:43–74

    Article  Google Scholar 

  • Wilson DS, Yoshimura J (1994) On the coexistence of specialists and generalists. Am Nat 144:692–707

    Article  Google Scholar 

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Authors and Affiliations

  1. Centre d’Ecologie Végétale et d’Hydrologie, 28 Rue Goethe, 67083, Strasbourg, France

    Bruno Hérault, Aurélien Bornet & Michèle Trémolières

  2. UMR Ecologie des Forêts de Guyane, INRA, University Antilles Guyane, BP 709, 97379, Kourou Cedex, France

    Bruno Hérault

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  1. Bruno Hérault
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  2. Aurélien Bornet
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  3. Michèle Trémolières
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Correspondence to Bruno Hérault.

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Hérault, B., Bornet, A. & Trémolières, M. Redundancy and niche differentiation among the European invasive Elodea species. Biol Invasions 10, 1099–1107 (2008). https://doi.org/10.1007/s10530-007-9187-9

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  • DOI: https://doi.org/10.1007/s10530-007-9187-9

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