Lesson 12 - Alaska Geobotany Center

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Ways to describe plant communities• Association approach• Continuum approach
Association Approach• Fig. 8-1, p. 183, BBPGSVegetation occurs indiscreetrecognizable units.Several species cooccuralong theenvironmentalgradient.Ecotones are rathernarrow portions ofthe gradient.Ecologists focus onclassification ofplant communitiesoften have this view.
Page 1 and 2: Lesson 12: Community concepts andat
Page 3 and 4: Flora vs. vegetation?
Page 5 and 6: Physiognomy• Physiognomic approac
Page 7 and 8: Dansereau s “lollipop diagrams”
Page 9 and 10: Raunkiaer s life forms based on pos
Page 11 and 12: Bioclimatic diagram showing distrib
Page 13 and 14: Plant Functional Types (PFTs)• It
Page 15 and 16: Plant Functional Types of Box (1981
Page 17 and 18: BIOME model (Prentice et al. 1992)
Page 19 and 20: Environmental constraints of the PF
Page 21 and 22: Vegetation redistribution of Europe
Page 23 and 24: Braun-Blanquet sorted Example table
Page 25 and 26: Simpson s and Shannon-Wiener s indi
Page 27 and 28: Alpha and Beta diversity• Whittak
Page 29 and 30: Phenology diagram for Acomastylis r
Page 31 and 32: Phenological diagrams ofin selected
Page 33: Productivity gradients• Fig. 8-7,
Page 37 and 38: Major proponents of the “discreet
Page 39 and 40: Clement s view• Clements, recogni
Page 41 and 42: Major proponents of the continuumap
Page 43 and 44: A broader view of Gleason: Nicholso
Page 45 and 46: Whittaker s data of tree species oc
Page 47 and 48: European reaction to the “Anglo-A
Page 49 and 50: Summary• Some characteristics of

Lesson 12 - Alaska Geobotany Center

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