Invasive Alien Species
Ruud Luntz
MONITORING POTENTIAL INVASIVE
SPECIES
Ludwigia grandiflora
Invasive Alien Species
Willem Stuulen
2004
1989 2004
Prunus serotina development
´
Bedekking
niet aanwezig
weinig (<1%)
veel (1%-10%)
zeer veel (>10%)
2004 - 2008 presence 75% -> 77%
2004
2008
2016
Our plan
Bedekkingsschaal
niet aanwezig
r
p
a
m1
m2
m4
1-
1+
2
3
4
5
6
7
8
9
´Black cherry
development
2008-2012
´
Verschil 2008-2012
sterke afname
afname
gelijk
toename
sterke toename
Points of attention
• Make a strategic plan
• No compromises
• Invest everything to eliminate the invasive
species
• Perceive invasive species
• Communicate about the management
Invasive Alien Species
Leon Terlouw
The third step: The necessary continuation.
- Communication and public
support internal and external
- Funding
- The 5 most important issues/
lessons/ points of attention.
The necessary continuation
with examples from the dune area
2008; 2009; 2015
Communication and public support
internal
-try to involve your collegues and
keep them informed
Committing the
neighbours
Communication and public support
external
-cooperate with your neighbours
-keep telling your story
Funding: LIFE; PAS; own budgets
• Management during project, max. 5 years
• After LIFE: PAS
• Regular yearly budgets
• Volunteers?
The 5 most important issues/ lessons/
points of attention
• Stay alert• Never think you are ready now
The 5 most important issues/ lessons/
points of attention
• Check your area systematically;
f.e. check 25% of your area
every year
The 5 most important issues/ lessons/
points of attention
• Make sure you have regular
yearly budgets for invasive
species
Involve volunteers but never get
dependent on them
(Grazing helps)
Prevention is the best!
Healthy N2000 dune area
needs never ending attention, care
and ………
acceptance that the work will never stop

Invasive alien species