[Invasive-species] New webpages for the Belgian Forum on Inva sive Species

Leo Vanhecke leo.vanhecke at br.fgov.be
Thu Jan 12 10:14:01 CET 2006

Dear friends,

About the remarks of Ton on the list of invasive higher plants in 
Belgium I would like to answer that the short list for Belgium is a 
deliberate choice. There excists allready a full list of naturalized 
phanerogamic species for Flanders (Verloove 2002). Within few monts a 
full list of all adventive and naturalized species for Belgium will be 
published by the same author (Inplanbel-project). Every species on both 
lists is fully commented (frequency, origin, trend,...). Several 
thousands of species are incorporated on the list. However, whether or 
not to call an alien species also a invasive species is to some degree a 
matter of choice. Many really invasive species are not considered 
harmful or as a nuissance a so they do not figure on those lists. What I 
mean is, that it is not the number of species present on the invasive 
species lists that defines the quality of that list.

Best wishes,
Leo Vanhecke

Ton van Haaren wrote:

> Dear Etienne
> I have seen the invasive species list of Belgium and I do think that 
> the list is somewhat short. Although I do not have any idea how many 
> species and which species really do occur in Belgium, but there are 
> some errors made in that list. As a member of the Dutch version of 
> invasive species forum, I'm responsible for the invertebrate list of 
> the invasive species in The Netherland presented on www.wew.nu\exoten 
> <http://www.wew.nu%5Cexoten>. While verifying the Dutch list with the 
> Belgian list there are some differences of which I mention some below. 
> Also the list of freshwater species of the higher plants must be 
> longer than this (5 species!). in The Netherland there are about 30 
> species recorded.
>   1.
>       the absence of Corbicula fluminalis strikes me. It has been
>       introduced in The Netherlands in 1988.
>   2.
>       Dreissena polymorpha most likely originates from the
>       Ponto-Caspian area
>   3.
>       Mytilopsis leucophaeta is a species that originates from
>       N-America or NW-Africa. The first European record is from 1835
>       from the harbour of Antwerpen. The original distribution area is
>       the Gulf of Mexico and adjacent Atlantic Ocean.
>   4.
>       Astacus leptodactylus originates form Eastern Europe
>   5.
>       Chelicorophium curvispinum, Dikerogammarus villosus and D.
>       hamobaphes originate from the Ponto-Caspian area.
>   6.
>       Dikerogammarus haemobaphes in Belgium seems unlikely, the
>       nearest record in western Europe seems to be some few records in
>       Germany. Recent claims from this species in the Nertherlands
>       were all female or specimens with an artefact.
>   7.
>       Orchestia cavimana originate from southern Europe
>   8.
>       the North-American Gammarus tigrinus is quit common in The
>       Netherlands since 1960. It seems likely that this species also
>       occurs in Belgium.
>   9.
>       the absence of both Hemimysis anomala and Limnomysis benedeni
>       seems peculiar. The last species is extremely common throughout
>       The Netherlands since it was introduced in 1997.
>  10.
>       the absence of Atyaephyra desmaresti (a meditterenean species).
>       This species has been collected in Belgium for the first time in
>       1886.
>  11.
>       the oligochaet Quistadrilus multisetosis also occurs in Belgium
>       and originates from North-America. This species had probably
>       been introduced (at least in The Netherland) around 1980.
>  12.
>       the mosquitoe Aedes albopictus also occurs in Belgium as an
>       invasive species from North-America or Asia. There is a record
>       from 2003 from Antwerpen. Although I understand this species is
>       deliberately omitted from the list, for it's a vector of a human
>       disease.
>  13.
>       the beetle Stenopelmus rufinasus is a north-American species
>       that has been introduced in France at the beginning of the 20th
>       century. Between 1915-1922 the beetle arrived in The Netherlands
>       and is now extremely common on and between Azolla.
>  14.
>       the fish Ctenopharyngidon idellus originates (Dutch specimens)
>       from china
>  15.
>       Hypophthalmichthys molitrix originates from Russia or China
> Note that this is just a short list of Dutch species, and that the 
> origin or introduction year maybe different in Belgium. You may check 
> our list on www.wew.nu\exoten <http://www.wew.nu%5Cexoten>.
> Best wishes
> Ton van Haaren
> Grontmij|AquaSense
> ------------------------------------------------------------------------
> From: BRANQUART Etienne [mailto:E.Branquart at mrw.wallonie.be]
> Sent: Tuesday, January 10, 2006 4:47 PM
> To: invasive-species at biodiversity.be
> Subject: [Invasive-species] New webpages for the Belgian Forum on 
> Invasive Species
> Dear all,
> New webpages of the Belgian Forum on Invasive Species have been 
> developed and are accessible from the following URL :
> http://www.biodiversity.be/thematic-forums/invasive-alien-species
> As you'll see, the list of invasive alien species in Belgium has been 
> updated, thanks to the contribution of numerous forum members. I would 
> like to take the opportunity to thank all of you who contributed to 
> this task by sending information on new invasive species in Belgium. 
> Species factsheets will be incorporated in the new website in a few 
> days, including additional species profiles on fishes, parakeets, etc. 
> A special thank to Dieter Anseeuw, Marie Pairon and Diederik Strubbe 
> who prepared background information for those new profiles.
> Of course, new species and information can be added to this reference 
> list for Belgium. Please feel free to send new information on the list 
> or directly to my e-mail address.
> On those pages, new information is also avaiable on international IAS 
> resources (working groups, research networks, etc.), thematic news and 
> events, etc. Additional information on legislation and other 
> IAS-related issues will be also developed in the future. Any comment 
> or suggestion is very welcome.
> Very best regards,
> Etienne Branquart
> ==========================================================================
> Dr.  Etienne Branquart
> Belgian Biodiversity Platform (SPO)
> Ministere de la Region wallonne
> Centre de Recherche de la Nature, des Forets et du Bois (DGRNE)
> Avenue Marechal Juin, 23
> B-5030 Gembloux- Belgium
> Tel :   + 32 (0)81 620 420
> Fax :  + 32 (0)81 620 436
> E-mail : E.Branquart at mrw.wallonie.be <mailto:E.Branquart at mrw.wallonie.be>
> URL: http://www.biodiversity.be
> ==========================================================================
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Dr. Leo Vanhecke

National Botanic Garden of Belgium (BR)
Dept. of vascular plants

Domein van Bouchout, B-1860 Meise, Belgium

Phone:	general: 	+32 (0)2 269 39 05
	direct line: 	+32 (0)2 260 09 60
Fax: 			+32 (0)2 270 15 67
e-mail: leo.vanhecke at BR.fgov.be

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