View presentation - Royal Botanic Gardens, Kew

How to deal with unwelcome plant guests in Europe – a Dutch case
Gerda van Uffelen
collection manager
Hortus botanicus Leiden
[email protected]
www.hortusleiden.nl
RBG Kew, May 12th, 2016
Clusius in
Vienna (1587)
The first layout and planting of the Hortus botanicus Leiden in 1594
Azolla in the Netherlands – our first
(and only?) well-documented escape
Leidsch Dagblad
October 27th, 1890
By Mygaia - Mygaia, on English wikipédia (File:Image-IMG
0018Afil.JPG), CC BY-SA 3.0,
https://commons.wikimedia.org/w/index.php?curid=11985
602
The Netherlands: flora districts and sea level
Field guide exotic species –
The Netherlands (2013)
Covenant with water plant growers
(2014)
1: no trade allowed
2: trade alowed, with a warning
1 Crassula helmsii
1 Hydrilla verticillata
1* Hydrocotyle ranunculoides
1 Ludwigia grandiflora
1 Ludwigia peploides
1 Myriophyllum aquaticum
2 Azolla
2 Cabomba caroliniana
Swamp stonecrop, pigmyweed
Esthwaite waterweed
Floating pennywort
Water-primrose
Floating primrose-willow
Parrot's feather
Duckweed fern
Fanwort
2 Egeria densa
2 Eichhornia crassipes
2 Myriophyllum heterophyllum
Brazilian waterweed
Water hyacinth
Broadleaf watermilfoil
2 Pistia stratiotes
2 Salvinia molesta
Water lettuce
Giant salvinia
Aquarium plants guide (2014)
Eradication…
Expert analysis of 152 species
that (may) be problematic in
The Netherlands (2015)
Fishery
Brought into Nature for use
Aqua/marine culture
Botanic gardens / zoos / aquaria
Pets and home aquaria
Agriculture
Ornamental plants
Living food and bait
Contaminated material in
Nurseries
Contaminated food
Unintentional on animals
Contaminated plants
Soil and water transport
Unintentional on ships
With large machinery
Persons and luggage
Ballast water in ships
Growth on ships’ hulls
Vehicles
Other ways of transport
Other pathways
On October 22nd of 2014 the European regulation on the
prevention and management of the introduction and spread of
invasive alien species was published.
Country 1:
risk assessment
Country 2:
risk assessment
Country 3:
risk assessment
Compilation
of the
Union list
Implementation
in the whole Union
The Union Plant List
Scientific name
Common name
Nederlandse naam
Baccharis halimifolia
Eastern Baccharis
Struikaster
Heracleum persicum
Persian hogweed
Perzische berenklauw
Heracleum sosnowskyi
Am. skunk cabbage
Sosnowski’s berenklauw
Lysichiton americanus
Whitetop Weed
Moeraslantaarn
Parthenium hysterophorus
Parthenium weed
Parthenium
Persicaria perfoliata
Mile a minute weed
Persicaria
Pueraria lobata
Kudzu Vine
Kudzu
Scientific name
Common name
Nederlandse naam
Cabomba caroliniana
Fanwort
Waterwaaier
Eichhornia crassipes
Water hyacinth
Waterhyacinth
Hydrocotyle ranunculoides
Floating pennywort
Grote waternavel
Lagarosiphon major
Curly waterweed
Verspreidbladige waterpest
Ludwigia grandiflora
Water-primrose
Waterteunisbloem
Ludwigia peploides
Floating primrose-willow
Kleine waterteunis-bloem
Myriophyllum aquaticum
Parrot's feather
Parelvederkruid
Suggestions for inclusion in the next version
Scientific name
Common name
Nederlandse naam
Acer negundo
Box elder, Ashleaf maple
Vederesdoorn, Californische esdoorn
Asclepias syriaca
Common milkweed
Zijdeplant
Gunnera manicata
Giant rhubarb
Mammoetblad
Gunnera tinctoria
Chilean rhubarb
Mammoetblad
Impatiens glandulifera
Indian / Himalayan balsam
Reuzenbalsemien
Lupinus polyphyllus
Large-leaved lupin
Vaste lupine
Pennisetum setaceum
Crimson fountaingrass
Lampenpoetsergras
Microstegium vimineum
Japanese stiltgrass
Microstegium
Heracleum mante-gazzianum
Giant hogweed
Reuzenberenklauw
Alternanthera philoxeroides
Alligator weed
Alligator weed
Myriophyllum heterophyllum
Broadleaf watermilfoil
Ongelijkbladig vederkruid
Elodea nuttallii
Nuttall's waterweed
Smalle waterpest
Scientific name
Ailanthus altissima
Common name
Tree of heaven
Nederlandse naam
Hemelboom
Cornus sericea
Red osier dogwood
Canadese kornoelje
Fallopia x bohemica
Bohemian hogweed
Boheemse duizendknoop
Solidago graminifolia
Grass-leaved goldenrod
Guldenroede
Spiraea tomentosa
Steeple brush
Viltige spirea
Gunnera tinctoria and G. manicata
Black Locust Tree (Robinia pseudoacacia)
Dutch Foundation of Botanical Gardens (NVBT)
Research on species imported with bonsais and other pot plants (Hortus botanicus Leiden)
A sunny afternoon near my home
The end – the future?