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Published byAllen Summers Modified over 9 years ago
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Objective To map out a Forest Community and to compare and contrast different soil types
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How It all was done 4 First perimeter triangles were placed out for reference point so that I did not cross old paths and previously recorded trees
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How It all was done 4 Trees were “marked” digitally by a GPS unit. And given a number (waypoint)
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How It all was done 4 Then the species name and DBH (Diameter Breast Height) were correlated with Waypoint number
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How It all was done 4 The GPS data was then transferred to the computer via Waypoint.exe. 4 The Points were taken from Waypoint format and projected into a Archview layout of the Heinke Farm Using AV Garmin Software
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How It all was done 4 The GPS data was then transferred to the computer via Waypoint.exe. 4 The Points were taken from Waypoint format and projected into a Archview layout of the Heinke Farm Using AV Garmin Software
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How it all was done 4 The trees were laid over the soil map and the Quadrats were picked by three characteristics 4 1. They had to be within a 1000 sq meter Quadrat 4 2. All the trees were on the forest edge 4 3. All the trees were on the same soil type
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How it all was done 4 The trees were laid over the soil map and the Quadrats were picked by three characteristics 4 1. They had to be within a 1000 sq meter Quadrat 4 2. All the trees were on the forest edge 4 3. All the trees were on the same soil type
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How it was all done 4 Next each tree in each Quadrat was typed into Microsoft Excel 4 From there the data was categorized by: 4 Tree Species 4 Tree density (amount of trees compared with the total amount of trees) 4 Layers (Sapling, Middle Layer, and Overstory 4 Further they were cut into Density Sapling Layer, Density Middle Layer… and so on
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How it all got done 4 From those specifications I was able to compare each Quadrat to find my ultimate goal of determining the differences between tree composition and soil type.
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Analysis at the beginning 4 Then you could ask yourself, like I did: I see all this data but how do I know that they are different and not just a fluke in the soil, trees, or maybe even the researcher?
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Analysis 4 I went for help and I got some information on how to analyze my data using statistical software.
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Analysis 4 The research called for an ANOVA (Analysis of Variance) test using two factors without replication. 4 From this point I compared all the data using a 95% confidence level. 4 I crossed Sapling layers of Quadrats with Density percents, Middle Story with Species Variety, and so on and so forth...
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Interpretation of data 4 Overall there was only one difference between the Quadrats taken and the soil type that the Quadrat was on. That was between the Quadrat 1 and Quadrat 3, 4, and 5. I stream-lined my findings and found that it had occurred in the Middle story of the Quadrats.
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Conclusions 4 So the different soil types had produced different tree composition, although very slight. There was a difference between the soil types on this small of a soil scale. The soil types had changed only by a couple of degrees of slope, the composition of the soil, and the moisture in the soil.
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ANY QUESTIONS?
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Now, Find the Researcher
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