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![](/pics/cocci.jpg) Naturalization in Belgium
First observation in the wild: |
1849 |
Invasion stage: |
stabilization |
Spatial distribution: |
isolated |
![](/pics/cocci.jpg) Invasiveness
Reproduction in the wild: |
yes |
Dispersion potential: |
medium |
Natural habitats: |
medium |
More on invasiveness: The plant mostly grows in open ruderal and alluvial habitats (e.g. riverbanks). Seeds may only germinate from bare soils; the low germination and recruitment rates in undisturbed sites reduce plant capacity to colonise natural plant communities.
![](/pics/cocci.jpg) Distribution in Belgium
Endangered Natura 2000 habitats ( ![](/pics/page_white_acrobat.png) ):
![](/pics/cocci.jpg) Impacts on Species
Predation / Herbivory: |
low |
Competition: |
high |
Disease transmission: |
low |
Genetic effects: |
low |
![](/pics/cocci.jpg) Impacts on Ecosystems
Nutrient cycling: |
unknown |
Physical alteration: |
likely |
Natural successions: |
high |
Food web alteration: |
low |
More on impacts: R. laciniata is very competitive and forms dense monospecific populations from rhizomes. Plant height may reach 2.5 meters. It locally decreases plant species richness and hinders colonisation of open habitats by tree species. The plant is toxic for livestock but also very melliferous.
![](/pics/cocci.jpg) Data Source & References
Authors: |
Branquart Etienne, Vanderhoeven Sonia, Van Landuyt Wouter, Van Rossum Fabienne, Verloove Filip. |
Published on: |
16 March 2009 |
Last update: |
22 December 2010 |
References:
Francirkova, T. (2001)
Contribution of the invasive ecology of Rudbeckia laciniata in the Czech Republic.
In: Brundu, G., Brock, J., Camarda, I., Child, L., Wade, M. (eds.) Plant Invasions: Species Ecology and Ecosystem Management, Backhuys Publishers, Leiden: 89-98.
Hejda, M., Pysek, P. & Jarosik, V. (2009)
Impact of invasive plants on the species richness,
diversity and composition of invaded communities. ![](/pics/page_white_acrobat.png)
Journal of Ecology 97: 393–403.
Lambinon, J., Delvosalle, L. & Duvigneaud, J. (2004)
Nouvelle fore de la Belgique, du Grand-Duché de Luxembourg, du Nord de la France et des régions voisines.
Editions du Patrimoine du Jardin botanique national de Belgique, Meise.
Muller, S. (2004)
Plantes invasives en France : état des connaissances et propositions d'actions.
Publication scientifique du Museum d'Histoire naturelle, Patrimoines naturels n°62.
Weber, E. & Gut, D. (2004)
Assessing the risk of potentially invasive plant
species in central Europe.
Journal for Nature Conservation12: 171-179.
Wittenberg, R. (2005)
An inventory of alien species and their threat to biodiversity and economy in Switzerland. ![](/pics/page_white_acrobat.png)
CABI Bioscience Switzerland Centre report to the Swiss Agency for Environment, Forests and Landscape. The environment in practice no. 0629: 155p.
![](/pics/cocci.jpg) Other Internet Links
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