Phenetic vs Phylogenetic:
Phenetic vs Phylogenetic:
Phenetic vs Phylogenetic:
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<strong>Phenetic</strong> <strong>vs</strong> <strong>Phylogenetic</strong>:<br />
Deriving Meaning from Soil Classification<br />
— Curtis Monger<br />
Plant & Environmental Sciences<br />
New Mexico State University, USA
How Far is Earth from the Sun?<br />
150 million kilometers
meaning n. 1. Something that is conveyed<br />
or signified.
meaning n. 1. Something that is conveyed<br />
or signified.<br />
Meaning is increased by<br />
1. linking to something familiar
Buol, Hole, McCracken, 1972
Buol, Hole, McCracken, 1972
Buol, Hole, McCracken, 1972
Buol, Hole, McCracken, 1972
How to get agronomists<br />
to listen to your talk
Mollisols
meaning n. 1. Something that is conveyed<br />
or signified.<br />
Meaning is increased by<br />
1. linking to something familiar<br />
2. grouping similar objects
<strong>Phenetic</strong> <strong>vs</strong> <strong>Phylogenetic</strong><br />
classification based on<br />
observable similarities<br />
classification based on<br />
evolutionary development
<strong>Phenetic</strong> <strong>vs</strong> <strong>Phylogenetic</strong><br />
classification based on<br />
observable similarities<br />
classification based on<br />
evolutionary development
Is Soil Taxonomy a phenetic classification?
USDA Soil Texture Classes =<br />
<strong>Phenetic</strong> Classification
35<br />
18<br />
sandy<br />
Family Particle-Size Classes =<br />
<strong>Phenetic</strong> Classification<br />
60<br />
fine loamy<br />
70<br />
very<br />
fine<br />
fine<br />
coarse loamy<br />
fine<br />
silty<br />
coarse<br />
silty<br />
15
QUADRILATERALS<br />
4-sided polygons<br />
PARALLELOGRAMS<br />
RECTANGLES<br />
SQUARES<br />
Hierarchical<br />
<strong>Phenetic</strong>
ORDERS<br />
SUBORDERS<br />
GREAT GROUPS<br />
SUBGROUPS<br />
FAMILIES<br />
Hierarchical<br />
<strong>Phenetic</strong>
<strong>Phenetic</strong> <strong>vs</strong> <strong>Phylogenetic</strong><br />
classification based on<br />
observable similarities<br />
classification based on<br />
evolutionary development
H.G. Wells “Outline of History” 1920
PHYLOGENETIC CLASSIFICATION<br />
World Book Encyclopedia 1960
PHYLOGENETIC CLASSIFICATION<br />
The Teaching Company 2010
Is Soil Taxonomy a phylogenetic classification?
soil development<br />
time
Entisols
Typic Torriorthent
Typic Haplocambid
Typic Haplargid
Typic Calciargid
Typic Calciargid
Argic Petrocalcid<br />
laminar<br />
plugged
Argic Petrocalcid<br />
pisoliths<br />
4 cm<br />
2 cm
Entisols<br />
Typic Haplargid<br />
Typic Haplocambid<br />
Typic Torriorthent<br />
Argic Petrocalcid<br />
Typic Calciargid
increasing taxonomic vocabulary
increasing taxonomic vocabulary<br />
decreasing familiarity with terms
CLASSIFICATION OF CARBONATE ROCKS (Folk, 1962)
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