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Soil & Herbaceous Composition Among Differing Strata Phil Mortellaro Vegetation Ecology Summer ‘13 Mountain Research Station, University of Colorado Boulder
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Soil & Herbaceous Composition Among Differing Strata
Phil MortellaroVegetation Ecology Summer ‘13Mountain Research Station, University of Colorado Boulder
The StudyStratification of the Foothills/Lower Montane
Soil Composition across differing strata, in the case hill slope position.
Herbaceous layer in terms of variance with hill slope position and soil composition.
Betasso Preserve- lower montane/foothills
Elevation ranged from 2011 meters to 1943 meters
Each sampling site had a Southwest aspect
Slopes: Top= 6° to 10° Mid= 3° Toe= 2°
The Site
Methods Employed
Transects
Point Intercept/Frame
Trowel
Results
plot 1
plot 2
plot 3
plot 4
plot 5
0
5
10
15
20
25
30
Soil Compositon Site 1: Top Slope
LitterDuffFiberous (Sandy Clay Loam)Layer 2 (Loamy Sand)
Laye
r D
epth
(cm
)
plot 1
plot 2
plot 3
plot 4
plot 5
0
5
10
15
20
25
Soil Composition Site 2: Mid Slope
LitterDuffFiberous (Loamy Sand)Layer 2(Loamy Sand)
Laye
r D
epth
(cm
)
plot 1
plot 2
plot 3
plot 4
plot 5
0
5
10
15
20
25
Soil Composition Site 3: Bottom/
Toe Slope
LitterDuffFiberous (Sandy Clay Loam)Layer 2(Sandy-er Clay Loam)Layer 3(Loamy Sand)
Laye
r D
epth
(cm
)
plot 1 plot 2 plot 3 plot 4 plot 50
5
10
15
20
25
30
35
Herbaceous Community Dynamics Site 1: Top Slope
grass hitsgrass height (cm)forb hitsforb height (cm)
Num
ber
of H
its &
Hei
ght
(cm
)
plot 1 plot 2 plot 3 plot 4 plot 50
5
10
15
20
25
30
Herbaceous Community Dynamics Site 2: Mid Slope
grass hitsgrass height (cm)forb hitsforb height (cm)
Num
ber
of H
its &
Hei
ght
(cm
)
plot 1 plot 2 plot 3 plot 4 plot 50
10
20
30
40
50
60
Herbaceous Community Dynamics Site 3: Bottom/Toe Slope
grass hitsgrass height (cm)forb hitsforb height (cm)
Num
ber
of H
its &
Hei
ght
(cm
)
DiscussionTwo Factor Analysis of Variance for Independent Variables
Rows, Columns, RxC
ConclusionConclusion affirms hypothesis; soil composition and plant life vary significantly with differing strata or hill slope position.
Refernces"An Example." PSU.edu. N.p., n.d. Web. <https://onlinecourses.science.psu.edu/stat414/node/252>.
"Psych. Statistics: Two Way Analysis of Variance (ANOVA)." Psych. Statistics: Two Way Analysis of Variance (ANOVA). N.p., n.d. Web. 18 July 2013. <http://www4.uwsp.edu/psych/stat/13/anova-2w.htm>.
Appendix
