
Naturalization in Belgium
| First observation in the wild: |
1939 |
| Invasion stage: |
spread |
| Spatial distribution: |
widespread |

Invasiveness
| Reproduction in the wild: |
yes |
| Dispersion potential: |
high |
| Natural habitats: |
high |
More on invasiveness: I. glandulifera occurs in many different habitats, but it thrives best on moist and nutrient rich alluvial soils. It occurs on meadows, along rivers and brooks, and in floodplain forests, especially in areas disturbed by man.

Impacts on Species
| Predation / Herbivory: |
low |
| Competition: |
high |
| Disease transmission: |
low |
| Genetic effects: |
low |

Impacts on Ecosystems
| Nutrient cycling: |
high |
| Physical alteration: |
high |
| Natural successions: |
medium |
| Food web alteration: |
low |
More on impacts: I. glandulifera may form dense monospecific stands that cover the soil, shade out and replace native annual and even perennial plant species because of early germination and rapid growth. In some conditions, it can reduce local species richness. It is known to prevent forests regeneration in moist and half shaded habitats. It may also displace native species through competition for pollinators, e.g. Stachys palustris. Its development can facilitate river bank erosion.

Data Source & References
| Authors: |
Branquart Etienne, Vanderhoeven Sonia, Van Landuyt Wouter, Van Rossum Fabienne, Verloove Filip |
| Published on: |
11 October 2007 |
| Last update: |
14 February 2008 |
References:
AEF (2006)
Cartes provisoires de la distribution de néophytes en Wallonie.
Unpublished document.
Chittka L. & Schurkens S. (2001)
Successful invasion of a floral market.
Nature 411: 653-655.
Essl, F. & Rabitsch, W. (2003)
Neobiota in Osterreich.
Umweltbundesamt, 432 pp.
Hejda M. & Pysek P. (2006)
What is the impact of Impatiens glandulifera on species diversity of invaded riparian vegetation?
Biological Conservation 132: 143-152.
Helmisaari, H. (2006)
Invasive alien species fact sheet Impatiens glandulifera
From online database of the North European and Baltic network on invasive alien species (NOBANIS).
Hulme P.E. & Bremner E.T. (2006)
Assessing the impact of Impatiens glandulifera on riparian habitats: partitioning diversity components following species removal.
Journal of Applied Ecology 43: 43-50.
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.
Perrins J., Fitter A. & Williamson M. (1983)
Population biology and rates of invasion of three introduced Impatiens species in the British Isles.
Journal of Biogeography 20: 33–44.
Toussaint, B. & Bedouet, F. (2005)
Les espèces végétales invasives des milieux aquatiques et humides du bassin Artois-Picardie.

Agence de l'Eau Artois-Picardie, 38 pp.
Van Landuyt, W., Hoste, I., Vanhecke, L., Van den Bremt, P. Vercruysse, W. & De Beer, D. (2006)
Atlas van de Flora van Vlaanderen en het Brussels gewest.
Nationale Plantentuin en het Instituut voor Natuur- en Bosonderzoek i.s.m. Flo.Wer vzw.
Verloove, F. (2006)
Catalogue of the Neophytes in Belgium (1800-2005).
Scripta Botanica Belgica 39, 89 pp.
Wadsworth R.A., Collingham Y.C., Willis S.G., Huntley B. & Hulme P.E. (2000)
Simulating the spread and management of alien riparian weeds: are they out of control?
Journal of Applied Ecology 37: 28-38.
Willis S.G. & Hulme P.E. (2002)
Does temperature limit the invasion of Impatiens glandulifera and Heracleum mantegazzianum in the UK?
Functional Ecology 16: 530-539.