NDFF iWaterplant

Latest version published by Dutch National Database of Flora and Fauna (NDFF) on Mar 26, 2018 Dutch National Database of Flora and Fauna (NDFF)

In 2014, the Dutch water boards collaborated with the Netherlands Food and Consumer Product Safety Authority and FLORON (Dutch Floristic Research Society) on an iPhone app designed to collect individual observations of invasive water plants. There are currently 13 species that can be recorded in the app, all of which also feature in the Voluntary Agreement Water Plants.

The app has 2 objectives: to facilitate maximum data collection (monitoring) of invasive water plants in Dutch waters and enable water boards to combat these plants as soon as these are reported.

The app shows photos that help the user determine which of the 13 species they saw. These species are also noted in the Invasive Water Plants field guide published by the NVWA.

Dataset available via https://www.ndff.nl/english / serviceteamndff@natuurloket.nl

Apart from these selection plots, other square kilometre plots are also examined, preferably in areas for which there is no inventory data.

Positive observations without zeros.

1,442 records (March 2018)



Download the latest version of the metadata-only resource metadata as EML or RTF:

Metadata as an EML file download in English (9 KB)
Metadata as an RTF file download in English (7 KB)


The table below shows only published versions of the resource that are publicly accessible.


Researchers should respect the following rights statement:

The publisher and rights holder of this work is Dutch National Database of Flora and Fauna (NDFF). This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC) 4.0 License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 2ce743d2-ddfd-4530-8c53-ad615c4a1817.  Dutch National Database of Flora and Fauna (NDFF) publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Netherlands Biodiversity Information Facility.


Metadata; Observation


Who created the resource:

Laurens Sparrius
Data manager
FLORON Plant Conservation Netherlands NL

Who can answer questions about the resource:

Who filled in the metadata:

Thijs de Kruif

Who else was associated with the resource:

Henk de Vries
Node manager NLBIF
NLBIF (Netherlands Biodiversity Information Facility) P.O.Box 9517 2300 RA Leiden NL

Geographic Coverage


Bounding Coordinates South West [50.736, 3.318], North East [53.521, 7.207]

Taxonomic Coverage

Exotical waterplants

Genus  Azolla (Duckweed fern)
Species  Egeria densa (Brazilian waterweed),  Myriophyllum aquaticum (Parrot's-feather),  Salvinia molesta (Giant salvinia),  Crassula helmsii (New Zealand pigmyweed),  Hydrocotyle ranunculoides (Floating marshpennywort),  Eichhornia crassipes (Water hyacinth),  Hydrilla verticillata (Waterthyme),  Pistia stratiotes (Water cabbage),  Ludwigia peploides (Floating primrose-willow),  Ludwigia grandiflora (Water primrose),  Cabomba caroliniana (Carolina fanwort),  Myriophyllum heterophyllum (Broadleaf Watermilfoil)

Temporal Coverage

Formation Period 2014-current

Additional Metadata

Alternative Identifiers https://ipt.ndff.nl/resource?r=12_012_iwaterplant