Lesson 12 - Alaska Geobotany Center

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Flora vs. vegetationFlora: a list of the plant species in a region (e.g., the flora of<strong>Alaska</strong>).Vegetation: the mosaic of plant communities in a landscape orregion.Thus vegetation is a collective term for all the plantcommunities in the same way that flora is a collective termfor all the plant species.We describe plant communities not vegetation communities.
Physiognomy• Physiognomic approaches to describe vegetation are useful tohelp simplify the overwhelming complexity of species-leveldescriptions.• Refers to the general appearance of the vegetation, usuallyincorporating features of its vertical structure and growth forms ofthe dominant plant species.• Many approaches to describing physiognomy have been used.• The current trend is toward development of plant functional typesthat have meaning as far as specific elements of ecosystemfunction.
Page 1 and 2: Lesson 12: Community concepts andat
Page 3: Flora vs. vegetation?
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 and 34: Productivity gradients• Fig. 8-7,
Page 35 and 36: Association Approach• Fig. 8-1, p
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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