Lesson 12 - Alaska Geobotany Center

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Profile diagrams (Davis and Richards)• Richards, Tansley, Watt,and Beard describednumerous Formations intropical systems, aimed atthe elimination of confusionin classification andterminology.• One of the mostdiagrammatic approachesto describe physiognomy.• Accurately measuredtransects through theforest, 200 m long andabout 25 m wide.• Often they would have tochop down the trees inorder to get the necessarymeasurements of crownheight and width.• Herbarium collections couldbe made of the trees, whichwere often quite tall.• This detail of the structurewas impossible to portraywith a photograph.
Dansereau s “lollipop diagrams”• Transparency: “Dansereau s scheme based on…”Based on:• Plant growthform• Plant size• Plant cover• Leaf shape• Leaf function(deciduous vs.evergreeen)• Leaf texture(sclerophyll,succulent,etc.)
Page 1 and 2: Lesson 12: Community concepts andat
Page 3 and 4: Flora vs. vegetation?
Page 5: Physiognomy• Physiognomic approac
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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