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1181 Ecology
1
119 Other natural sciences
1
ABUNDANCE
1
ASSOCIATION
1
Conservation status
1
DUCKS
1
EURASIAN WIGEON
1
GULL COLONIES
1
Gull colony
1
LARUS-RIDIBUNDUS
1
MANN-KENDALL
1
POPULATION
1
PREDATORS
1
Population trend
REMOVAL
1
Secondary endangerment
1
Species interaction
1
Threatened species
evolutionary biology
1
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