An updated guide on invasive waterplants in the Netherlands
A second edition of ‘Invasive waterplants in the Netherlands’ has been published. The guide is directed to field inspectors (i.e. field staff of water boards and organizations that manage natural areas surveying watercourses for aquatic plants), to volunteers of botanical societies, and any other interested person. The guide presents general information (current distribution, origin, ecology, impacts and control measures) and identification keys for the following invasive alien aquatic plants: Azolla filiculoides (Salviniaceae, EPPO Observation List of Invasive Alien Plants), Cabomba caroliniana (Cabombaceae, EPPO List of Invasive Alien Plants), Crassula helmsii (Crassulaceae), Egeria densa (Hydrocharitaceae, EPPO List of IAP), Eichhornia crassipes (Pontederiaceae, EPPO A2 List), Elodea nuttallii (Hydrocharitaceae, EPPO List of IAP), Hydrilla verticillata (Hydrocharitaceae, EPPO List of IAP), Hydrocotyle ranunculoides (Apiaceae, EPPO A2 List), Landoltia punctata (Araceae), Lagarosiphon major (Hydrocharitaceae, EPPO List of IAP), Ludwigia grandiflora (Onagraceae, EPPO A2 List), Ludwigia peploides (Onagraceae, EPPO A2 List), Lysichiton americanus (Araceae, EPPO Observation List of IAP), Pistia stratiotes (Araceae, EPPO List of IAP), Mimulus guttatus (Phrymaceae), Myriophyllum aquaticum (Haloragaceae, EPPO List of IAP), Myriophyllum heterophyllum (Haloragaceae, EPPO List of IAP), Pontederia cordata (Pontederiaceae), Sagittaria latifolia (Alismataceae), Salvinia molesta (Salviniaceae, EPPO List of IAP).
Sources
Van Valkenburg JLCH (2014) Invasieve waterplanten in Nederland. Veldgids. 2e editie. Nedelandse Voedsel- en Warenautoriteit, Ministerie van Economische Zaken. 48 p.