N2000-Alien plants along river banks

Latest version published by University of Liège on Apr 28, 2020 University of Liège
Publication date:
28 April 2020
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University of Liège
CC-BY 4.0

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Protected areas and the Natura 2000 network are keystones of the EU nature and biodiversity policy. However, alien plants do not stop their spread at the border of protected areas and invasive plants are reported to threaten many ecosystems, notably in aquatic and riparian areas.

A stratified sampling of the Natura 2000 network in Wallonia revealed that at least 41 alien plant species were present. 75 % of the sampled sites were invaded by at least one alien plant species.

Data Records

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The publisher and rights holder of this work is University of Liège. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: d4ce1621-8469-49ad-86b8-91143c0e0490.  University of Liège publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Belgian Biodiversity Platform.


Occurrence; Alien plants; alien flora; exotic plants; Natura 2000; river banks; Observation


Arnaud Monty
  • Metadata Provider
  • Originator
  • Point Of Contact
Research supervisor
Liège University - Gembloux Agro-Bio Tech - Biodiversity and Landscape unit
Passage des Déportés,2
5030 Gembloux
+ 32 81 62 23 86
Hélène Aimont
  • Originator
Research assisstant

Geographic Coverage

Wallonia, southern Belgium.

Bounding Coordinates South West [49.526, 3.645], North East [50.763, 6.341]

Temporal Coverage

Start Date / End Date 2013-05-02 / 2013-09-08

Project Data

No Description available

Title Etat des lieux de l’occurrence d’espèces végétales exotiques dans les habitats rivulaires d’intérêt biologique et patrimonial.
Funding Project funded by Service Public de Wallonie DGARNE-DNF.
Study Area Description River banks included in the N2000 network of the Walloon Region (Southern Belgium).

The personnel involved in the project:

Sampling Methods

A stratified sampling was performed across the N2000 network in the Walloon Region, using bioclimatic subregions (Ardenne, Lorraine, Famenne, Condroz and Hesbaye) and water basin size (> or < 100 km²) as strata. A sampling unit consisted in a 150 long x 10m wide strip of river bank. In a total of 187 sampling units (corresponding to ca. 0.4% of the 6800 km of rivers in the Wallon Natura 2000 network), vegetation surveys were realized between May and September 2013.

Study Extent The study took place along river banks included in the N2000 network of the Walloon Region (Southern Belgium), between May and September 2013.

Method step description:

  1. A map of the N2000 network was crossed with the hydrographic network map of Wallonia.
  2. Using this map, 10 strata were defined based on bioclimatic subregions (Ardenne, Lorraine, Famenne, Condroz and Hesbaye) and water basin size (> or < 100 km²) and the number of potential sampling units in each stratum was calculated.
  3. A constant proportion of sampling units were randomly selected in each stratum.
  4. Each sampling unit was visited and vegetation relevés were realized.

Additional Metadata

Alternative Identifiers d4ce1621-8469-49ad-86b8-91143c0e0490