NDFF Molluscs in EU Habitats Directive

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

The data about policy-relevant molluscs in the Habitats Directive of the European Commission: Narrow-mouthed whorl snail Desmoulin's whorl snail Lesser ramshorn snail are collected as part of the HabSlak project of the Anemoon Foundation (the Wijngaarslak and the Bataafse stroommossel − which are also mentioned in the Habitats Directive − are not included in this project)

The HabSlak project is part of the Dutch Molluscs Atlas Project (ANM), but has a far more structured approach to supervising volunteers, a more systematic inventory method and a more stringent validation protocol.

A standardised method has been used for inventory surveys of the 3 species since the first ͚catch-up͛ on occurrence research in 2004. Although the method has generally remained the same, changes and improvements have been made on a more detailed level based on newly acquired ecological knowledge. This method, which includes new information up to August 2009, is described in Boesveld et al. (2009).

All species reported for the HabSlak project are checked by an expert from the Anemoon Foundation. Observations that are not checked by an expert are not included in the database. Observations without evidence are not accepted.

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

Positive observations without zeros.


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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: cb0ad417-bdca-4d5e-a624-811b50f02860.  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.




Who created the resource:

Adriaan Gmelig Meyling
Anemoon Foundation NL

Who can answer questions about the resource:

Who filled in the metadata:

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 [50.695, 3.252], North East [53.501, 7.581]

Taxonomic Coverage

policy-relevant molluscs

Species  Vertigo angustior (Narrow-mouthed whorl snail),  Vertigo moulinsiana (Desmoulin's whorl snail),  Anisus vorticulus (Lesser ramshorn snai)

Additional Metadata

Alternative Identifiers https://ipt.ndff.nl/resource?r=4_006_slakken_habitatrichtlijn