Distribution and Morphological Variations of Invasive Macrophytes Elodea Nuttallii (Planch.) H. St. John and Elodea Canadensis Michx in Croatia

Open access

Abstract

The invasive species Elodea nuttallii was recorded for the first time in the Croatian flora in 2006, in the drainage channels of Kopački rit (Baranja). After its establishment, E. nuttallii begins to spread to the eastern and northern part of the drainage channel network from 2006-2009. High water levels are responsible for the linear spreading direction of E. nuttallii, E. nuttallii and E. canadensis show a wide range of morphological variation, which is characteristic of successful invaders. To show morphological variations of two Elodea species, the most important characters indicated in the literature were measured on 24 fresh collected samples from the seven sites in Croatia. In spite of some overlap in leaf length and width between the two Elodea species, the differences of all morphological traits except internode length are statistically significant. In E. nuttallii leaf width, length and internode length show a higher morphological variability as a result of the higher adaptive strategy to environmental parameters. The most reliable morphologi-cal characters distinguishing E. nuttallii and E. canadensis are leaf width 0.5 mm below the tip and the angle at the apex. E. nuttallii can be expected to spread to other areas of Croatia.

If the inline PDF is not rendering correctly, you can download the PDF file here.

  • Agrawal A. A. 2001: Phenotypic plasticity in the interactions and evolution of species. Science 294 321-326.

  • Barrat-Segretain M.-H. 2005: Competition between invasive and indigenous species: impact of spatial pattern and developmental stage. Plant Ecology 180 153-160.

  • Barrat-Segretain M.-H. Cellot B. 2007: Response of invasive macrophyte species to drawdown: the case of Elodea sp. Aquatic Botany 87 255-261.

  • Bowmer K. H. Jacobs S. W. L. Sainty G. R. 1995: Identification biology and management of Elodea canadensis Hydrocharitaceae. Journal of Aquatic Plant Management 33 13-19.

  • Braun-Blanquet J. 1964: Pflanzensoziologie. Springer Verlag Wien New York.

  • Casper S. J. Krausch H. D. 1980: Süsswasserflora von Mitteleuropa. Band 23: Pteri-dophyta und Anthophyta. VEB Gustav Fischer Verlag Jena.

  • Dandy J. E. 1980: Elodea. In: Tutin T. G. Heywood V. H. Burges N. A. Moore D. M. Valentine D. H. Walters S. M. Webb D. A. (eds.) Flora Europaea 5 4-5. Cambridge University Press Cambridge.

  • Erhard D. 2005: Chemoecological investigations of the invasive waterweeds Elodea spp. PhD Thesis Universität Konstanz.

  • Haury J. 1996: Assessing functional typology involving water quality physical features and macrophytes in a Normandy river. Hydrobiologia 340 43-49.

  • Hérault B. Bornet A. Trémolières M. 2008: Redundancy and niche differentiation among the European invasive Elodea species. Biological Invasions 10 1099-1107.

  • James C. S. Eaton J. W. 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.

  • Janauer G. A. Gaberščik A. Vukov D. 2007: Macrophytes and habitat characteristics of the Danube. Danube News Bulletin of the International Association for Danube Research IAD 13/14 Wilhering 15-18.

  • Janauer G. A. Schmidt B. Greiter A. 2008: Macrophytes. In: Liska I. Wagner F. Slobodník J. (eds.) Joint Danube survey-final scientific report. International Commission for the Protection of the Danube River Vienna Austria.

  • Kamiński D. 2010: Participation of Elodea nuttallii (Planch.) H. St. John. in aquatic macrophytes plant communities in Poland. 55th Meeting of the Polish Botanical Society Warsaw. Acta Societatis Botanicorum Poloniae 79 40-41.

  • Király G. Mesterházy A. Bakan B. 2007a: Elodea nuttalii (Planch.) H. St. John Myosotis laxa Lehm. and Pyrus austriaca Kern. new for Slovenia as well as other floristic records. Hladnikia 20 11-15.

  • Király G. Stetàk D. Bànyàsz A. 2007b: Spread of invasive macrophytes in Hungary. Neobiota 7 123-131.

  • Kuhar U. Germ M. Gaberščik A. 2010: Habitat characteristics of the alien species Elodea canadensis in Slovenian watercourses. Hydrobiologia 656 205-212.

  • Larson D. Willén E. 2007: The relationship between biodiversity and invisibility in central Swedish lakes invaded by Elodea species. In: Gherardi F. (ed.) Biological invaders in inland waters: Profiles distribution and threats 423-433. Springer Netherlands.

  • Ljevnaić-Mašić B. 2010: Hydrophytes in the main canal network of DTD hydrosystem on the territory of Banat (in Serbian). PhD Thesis University of Novi Sad.

  • Lodeta V. Somođi I. Novak N. Zrinski G. 2009: Water pest (Elodea canadensis Michx.) as an important ecological and economical problem for the hydro-power plant -Varaždin-North in Croatia. Aquatic Weeds 2009 Proceedings of the 12th European Weed Research Society Finnish Environment Institute Helsinki 110-111.

  • Mazej Grudnik Z. Germ M. 2013: Spatial pattern of native species Myriophyllum spica-tum and invasive alien species Elodea nuttallii after introduction of the latter one into the Drava River (Slovenia). Biologia 68 202-209.

  • Mazej Grudnik Z. Savinek K. 2010: Elodea nuttallii an invasive alien species in river Drava (Slovenia). 5th Slovenian Symposium on Plant Biology Ljubljana 26.

  • Nikolić T. (ed) 2009: Flora Croatica Database. Department of Botany and Botanical Gar-den Faculty of Science University of Zagreb. Retrieved November 2009 from http:// hirc.botanic.hr/fcd/InvazivneVrste

  • Riis T. Lambertini C. Olesen B. Clayton J. S. Brix H. Sorrel B. K. 2010: Invasion strategies in clonal aquatic plants: are phenotypic differences caused by phenotypic plasticity or local adaptation? Annals of Botany 106 813-822.

  • Rodwell J. S. 1995: British plant communities. Vol. 4. Cambridge University Press Cambridge UK.

  • Scion Corporation 1997-2005 Frederick MD USA

  • Sell P. Murrell G. 2007: Flora of Great Britain and Ireland. Vol. 5. Butomaceae-Orchi-daceae. Cambridge University Press.

  • Simpson D. A. 1984: A short history of the introduction and spread of Elodea Michx in the British Isles. Watsonia 15 1-9.

  • Simpson D. A. 1986: Taxonomy of Elodea Michx in the British Isles. Watsonia 16 1-14.

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

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

  • Thiébaut G. Di Nino F. 2009: Morphological variations of natural populations of an aquatic macrophyte Elodea nuttallii in their native and in their introduced ranges. Aquatic Invasions 4 311-320.

  • Trémolières M. Barrat-Segretain M.-H. Thiébaut G. Combroux I. Haan-Archipoff G. 2007: The invasiveness of two macrophytes species in waterbodies Elodea nuttallii (Planch.) St John and E. canadensis Michaux. Adaptive species strategy and key factors controlling habitat invisibility? 5th Symposium for European Freshwater Sciences Palermo 149.

  • Vukov D. Igić R. Boža P. Anačkov G. Janauer G. A. 2006: Habitat and plant species diversity along the river Danube in Serbia. Proceedings 36th International Conference of IAD. Austrian Committee Danube Research / IAD Vienna 127-131.

  • Wolff P. 1980: Die Hydrilleae (Hydrocharitaceae) in Europa. Göttinger Floristische Rundbriefe 14(2) 33-56.

Search
Journal information
Impact Factor


IMPACT FACTOR 2018: 0.985
5-year IMPACT FACTOR: 1.006

CiteScore 2018: 1.18

SCImago Journal Rank (SJR) 2018: 0.360
Source Normalized Impact per Paper (SNIP) 2018: 0.995

Cited By
Metrics
All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 203 120 6
PDF Downloads 102 65 3