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friesland
dutch wadden islands
2
fauna
2
nederland
2
nederlandse waddeneilanden
2
netherlands
2
Vlieland
1
adverse effects
1
afgrazen
1
alblasserwaard
1
apodemus sylvaticus
1
arvicola terrestris
1
begrazing
1
betula pubescens
1
biodiversiteit
1
browsing
1
calamagrostis epigejos
1
carex arenaria
1
cattle
1
duinen
1
duinplanten
1
duneland plants
1
dunes
1
empetrum nigrum
1
eutrofiƫring
1
eutrophication
1
gewervelde dieren
1
grazing
1
habitats
1
invertebrates
1
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