Response of invasive macrophyte species to drawdown: The case of Elodea sp. |
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| Institution: | 1. CNRS, Centre de Recherche de Gif – FRC3115, Institut de Neurobiologie Alfred Fessard – FRC2118, Laboratoire de Neurobiologie et Développement – UPR3294, F-91198 Gif-sur-Yvette, France;2. University of Nha Trang, Institute of Biotechnology and Environment, Nha Trang, Khanh Hoa 57000, Viet Nam;3. CNRS, Centre de Recherche de Gif – FRC3115, Institut de Chimie des Substances Naturelles – UPR 2301, F-91198 Gif-sur-Yvette, France;4. CEA, iBiTec-S, Service d''Ingénierie Moléculaire des Protéines, F-91191 Gif-sur-Yvette, France;1. CNRS, Institut de Neurobiologie Alfred Fessard – FRC2118, Laboratoire de Neurobiologie et Développement – UPR3294, 91198 Gif-sur-Yvette cedex, France;2. Laboratoire Biologie Neurovasculaire et Mitochondriale Intégrée, UMR CNRS 6214 INSERM 1083, Université d''Angers, 49045 Angers cedex 01, France;1. Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, Hubei, PR China;2. Hubei Key Laboratory of Wetland Evolution & Ecological Restoration, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, Hubei, PR China;3. Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan;4. Laboratory of Plant Conservation Science, Faculty of Agriculture, Meijo University, Aichi 468-8502, Japan;1. FSBI RF SSC Institute for Theoretical and Experimental Physics, Bolshaya Cheremushkinskaya 25, Moscow 117218, Russian Federation;2. National Research Nuclear University «MEPhI», Kashirskoe Shosse 31, Moscow 115409, Russian Federation |
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| Abstract: | The response to drawdown of vegetative fragments (whole plants, shoot fragments and turions) of two invasive macrophyte species, Elodea canadensis and Elodea nuttallii, was studied through laboratory experiments. In addition, field observations were made on the colonisation of a wetland by E. nuttallii before and after a natural drawdown. The survival and the growth of vegetative fragments of E. nuttallii were higher than those of E. canadensis after an artificial drawdown of several days. In the field the recolonisation by E. nuttallii of a wetland that was drained for 10 weeks during a summer drawdown was very rapid, the abundance of this macrophyte species being not affected by the drawdown event. We conclude that E. nuttallii possesses a high resilience to desiccation and that a summer drawdown would not be efficient in the control of this invasive species. |
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