Abstract
Invasive alien species Elodea nuttallii was introduced into the Drava River (Slovenia) in 2007. The spatial distribution of native macrophyte species Myriophyllum spicatum and the invasive alien species E. nuttallii was studied in two impoundments, HPP Vuhred and HPP Mariborski otok in the years 2009, 2010 and 2011. The very heterogeneous environment of the Drava River had resulted in dynamic and non-uniform distributions of E. nuttalli and M. spicatum in both impoundments. The distribution of E. nuttalli was shown to be suppressed in river stretches exposed to great turbulence. It had, however, successfully invaded areas with gentle slope of littoral, low exposition to main water flow and muddy sediment and prevailed against the native species M. spicatum. The latter was more abundant than E. nuttallii in stretches exposed to higher flow velocity. Thus, the competitive success of M. spicatum and E. nuttallii depended on environmental conditions. Our results lead to the prediction that E. nuttallii will increase further in the river Drava, causing serious economic problems.
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References
Angelstein S. & Schubert H. 2009. Light acclimatisation of Elodea nuttallii grown under ambient DIC conditions. Plant Ecology 202: 91–101.
Angelstein S., Wolfram C., Rahn K., Kiwel U., Frimel S., Merbach I. & Schubert H. 2009. The influence of different sediment nutrient contents on growth and competition of Elodea nuttallii and Myriophyllum spicatum in nutrient-poor waters. Fund. Appl. Limnol. 173: 49–57.
Baattrup-Pedersen A. & Riis T. 1999. Macrophyte diversity and composition in relation to substratum characteristics in regulated and unregulated Danish streams. Freshwater Biol. 42: 375–385.
Barrat-Segretain M.-H. 2001. Invasive species in the Rhone River floodplain (France): replacement of Elodea canadensis Michaux by E. nuttallii St. John in two former river channels. Arch. Hydrobiol. 152: 237–251.
Barrat-Segretain M.-H. 2004. Growth of Elodea canadensis and Elodea nuttallii in monocultures and mixture under different light and nutrient conditions. Arch. Hidrobiol. 161: 133–144.
Barrat-Segretain M-H. 2005. Competition between invasive and indigenous species: impact of spatial pattern and developmental stage. Plant Ecol. 180: 153–160.
Barko J.W. 1983. The growth of Myriophyllum spicatum in relation to selected characteristics of sediment and solution. Aquat. Bot. 15: 91–103.
Bernez I., Daniel H., Haury J. & Ferreira M.T. 2004. Combined effects of environmental factors and regulation on macrophyte vegetation along three rivers in Western France. Riv. Res. Appl. 20: 43–59.
Bornette G. & Heiler G. 1994. Environmental and biological responses of former channels to river incision: a diachronic study on the Upper Rhône River. Regul. River 9: 79–92.
Butcher R. W. 1933. Studies on the ecology of rivers. I. On the distribution of macrophytic vegetation in the rivers of Britain. J. Ecol. 21: 58–91.
Catford J.A., Roland J. & Nilsson C. 2009. Reducing redundancy in invasion ecology by integrating hypotheses into a single theoretical framework. Diversity Distrib. 15: 22–40.
Clarke S.J. & Wharton G. 2001. Sediment nutrients characteristics and aquatic macrophytes in lowland English rivers. Sci. Tot. Environ. 266: 103–112.
Crawley M. J. 1987. What makes a community invasible? pp. 429–454. In: Gray A.J., Crawley M.J. & Edwards P.J. (eds), Colonization, Succession and Stability, Blackwell, Oxford. Dravske elektrarne Maribor homepage. http://www.dem.si/eng/ (accessed 01.03.2012).
Ellawala C., Asaeda T. & Kawamura K. 2011. Influence of flow turbulence on growth and indole acetic acid and H2O2 metabolism of three aquatic macrophyte species. Aquatic Ecol. 45: 417–426.
Goodwin B.J., McAllister A.J. & Fahrig L. 1999. Predicting Invasiveness of Plant Species Based on Biological Information. Conserv. Biol. 13: 422–426.
Greulich S. & Tremolieres 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.
Hamabata E. 1997. Distribution, stand structure and yearly biomass fluctuation of Elodea nuttallii, an alien species in Lake Biwa — Studies of submerged macrophyte communities in Lake Biwa (3). JPN. J. Limnol. 58: 173–190.
Hrivnák R., Oťaheľová H. & Jarolímek I. 2009. Diversity of aquatic macrophytes in relation to environmental factors in the Slatina River (Slovakia). Biologia 61: 417–423.
Hrivnák R., Oťaheľová H., Valachovič M., Paľove-Balang R. & Kubinská A. 2010. Effect of environmental variables on the aquatic macrophyte composition pattern in streams: a case study from Slovakia. Fund. Appl. Limnol. 177: 115–124.
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., Schmidt-Mumm U. & Schmidt B. 2010. Aquatic macrophytes and water current velocity in the Danube River. Ecol. Eng. 36: 1138–1145.
Keane R.M. & Crawley M.J. 2002. Exotic plant invasions and the enemy release hypothesis. Trends Ecol. Evol. 17: 164–170.
Király G., Mesterházy A. & Bakan B. 2007. 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.
Kohler A. & Janauer G.A. 1995. Zur Metodik der Untersuchungen von aquatischen Makrophyten in Flussgewasseren, pp. 1–22. In: Landsberg H. & Klapper H. (eds), Handbuch Angewandte Limnologie, Ecomed Verl., Landsberg/Lech.
Kuhar U., Germ M. & Gaberščik A. 2010. Habitat characteristics of alien species Elodea canadensis in watercourses. Hydrobiologia 656: 205–212.
Magee T.K., Ringold P.L. & Bollman M.A. 2008. Alien species importance in native vegetation along wadeable streams, John Day River basin, Oregon, USA. Plant Ecol. 195: 287–307.
Mazej Z. & Epšek M. 2005. The macrophytes of lake Velenjsko jezero, Slovenia — the succession of macrophytes after restoration of the lake. Acta biol. slov. 48: 21–31.
Mazej Z. & Germ M. 2008. Competitive advantages of Najas marina L. in a process of littoral colonization in the lake Velenjsko jezero (Slovenia) Acta biol. slov. 51: 13–20.
Nagasaka M. 2002. Changes in biomass and spatial distribution of Elodea nuttallii (Planch.) St. John, an invasive submerged plant, in oligomesotrophic Lake Kizaki from 1999 to 2002. Limnology 5: 129–139.
Nichols S.A. & Shaw H. 1989. Ecological life histories of the three aquatic nuisance plants, Myriophyllum spicatum, Potamogeton crispus and Elodea canadensis. Hydrobiologia 131: 3–21.
Ozimek T., Donk E. & Gulati R. D. 1993. Growth and nutrient uptake by two species of Elodea in experimental conditions and their role in nutrient accumulation in a macrophyte-dominated lake. Hydrobiologia 251: 13–18.
Pall K. & Janauer G. A. 1995. Die Makrophytenvegetation von Flußstauen am Beispiel der Donau zwischen Fluß-km 2552.0 und 2511.8 in der Bundesrepublik Deutschland. Arch. Hydrobiol. Suppl. 101(Large Rivers 9): 91–109.
Rejmanek M. & Richardson D. M. 1996. What attributes make some plant species more invasive? Ecology 77: 1655–1661.
Schneider S. & Melzer A. 2003. The trophic index of macrophytes (TIM) — a new tool for indicating the trophic state of running waters. Inter. Rev. Hydrobiol. 88: 49–67.
Sculthorpe C.D. 1967. Biology of Aquatic Vascular Plants. Edward Arnold, London, 610 pp.
Smith Ñ.S. & Barko J.W. 1990. Ecology of Eurasia watermilfoil. J. Aquat. Plant Manage. 28: 55–64.
Shea K. & Chesson P. 2002. Community ecology theory as a framework for biological invasions. Trends Ecol. Evol. 17: 170–176.
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. 1990. Displacement of Elodea canadensis Michx by Elodea nuttallii (Planch.) H. St John in the British Isles. Watsonia 18: 173–177.
Thiébaut G., Rolland T., Robach F., Trémoliéres M. & Muller S. 1997. Some consequences of the introduction of two macrophyte species, Elodea canadensis Michaux and Elodea nuttallii St. John, in continental aquatic ecosystems: example of two areas in the north-east of France: Alsace plain and northern voges. Bull. Fr. Peche. Piscicult. 344/345: 441–452.
Thiébaut G. & Muller S. 1999. A macrophyte communities sequence as an indicator of eutrophication and acidification levels in weakly mineralised streams in north-eastern France. Hydrobiologia 410: 17–24.
Tilman D. 1997. Community invasibility, recruitment limitation, and grassland biodiversity. Ecology 78: 81–92.
Willby N.J., Abernethy V.J. & Demars B.O.L. 2000. Attribute-based classification of European hydrophytes and its relationship to habitat utilization. Freshwat. Biol. 43: 43–74.
Wolff P. 1980. Die Hydrilleae (Hydrocharitaceae) in Europa. Gottinger Floristische Rundbriefe 14: 33–56.
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Mazej Grudnik, Z., Germ, M. Spatial pattern of native species Myriophyllum spicatum and invasive alien species Elodea nuttallii after introduction of the latter one into the Drava River (Slovenia). Biologia 68, 202–209 (2013). https://doi.org/10.2478/s11756-013-0006-8
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DOI: https://doi.org/10.2478/s11756-013-0006-8

