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Glossary of Ecology Unit 2 (1)

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community
all populations of an area OR biotic components of an ecosystem
flora
all plants of an area
fauna
all animals of an area
vegetation
structure of the flora in terms of dominance
physiognomy
overall appearance of a community
lifeform
classification of plants based on the location of the bud for new growth
dominants
controlling plants
influents
controlling animals
density
D - number of individuals of a species per unit area
frequency
F - % of samples a species occurs in
Dominance
B - amount in bulk or weight (biomass, canopy cover, basal cover etc) of a species per unit area
Importance Value
IV - relative D + relative F + relative B /3
vertical stratification
vertically differential distribution of species in a community
horizontal distriubtion
horizontally differential distriubtion of species in a community

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