Why I Hate PowerPoint

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Why I Hate PowerPoint

• Also, the Impact of Class Definition on Landscape
  Metrics Used in FRAGSTATS

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The Details

• Consolidate Classes from Lab 1
• Apply the same metrics to data from the same year
  (2001).
• Observe results
• Interpret results

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Original Classes

• Following Slides Contain a List of the Original
  Classes.
• More than 30 classes.

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Class Description
111 Developed Highly (gt75 impervious surface)
112 Developed Moderately (50-75 impervious surface)
113 Developed Lightly - wooded (25-50 impervious surface)
114 Developed Lightly - unwooded (25-50 impervious surface)
120 Cultivated (actively tilled, fallow and recently abandoned)
131 Grassland unmanaged (grazed land, old fields, abandoned land)
132 Grassland managed (golf courses, residential/corporate lawn, parks)
133 Grassland airport
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141 Upland Forest Coastal Plain Oak dominant (Oak gt 75)
142 Upland Forest Coastal Plain Oak-pine (Oak 50-75)
143 Upland Forest Coastal Plain Pine-oak (Pine 50-75)
144 Upland Forest Coastal Plain Pine dominant (Pine gt 75)
145 Upland Forest Highlands/Piedmont deciduous - mixed hardwoods dominant
146 Upland Forest Highlands/Piedmont mixed deciduous/coniferous - hemlock/pine
147 Upland Forest Highlands/Piedmont mixed deciduous/coniferous - red cedar/pine
148 Upland Forest Highlands/Piedmont coniferous - hemlock/pine dominant
149 Upland Forest Highlands/Piedmont coniferous - red cedar/pine/plantation dominant
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151 Upland Scrub/Shrub Coastal Plain mixed deciduous/coniferous
152 Upland Scrub/Shrub Coastal Plain mixed deciduous/coniferous - maritime/dune
153 Upland Scrub/Shrub Highlands/Piedmont mixed deciduous/coniferous
160 Barren soil/rock (sand/gravel pits, barren lt 25 vegetation)
200 Marine/Estuarine Unconsolidated shore
210 Estuarine emergent marsh
230 Riverine/lacustrine/palustrine emergent marsh mixed species
241 Wetland Forest Coastal Plain hardwood swamp (gt66 deciduous)
242 Wetland Forest Coastal Plain pine lowland (gt66 evergreen)
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243 Wetland Forest Coastal Plain mixed - hardwood/white cedar-pine-holly
244 Wetland Forest Coastal Plain white cedar swamp (gt66 evergreen)
245 Wetland Scrub/shrub Coastal Plain mixed
246 Wetland Forest Highlands/Piedmont hardwood swamp (gt66 deciduous)
247 Wetland Forest Highlands/Piedmont mixed - hardwood/hemlock/white cedar/pine
248 Wetland Forest Highlands/Piedmont conifer swamp - hemlock/cedar/pine dominant (gt66 evergreen)
249 Wetland Scrub/shrub Highlands/Piedmont mixed deciduous/evergreen
250 Water
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Consolidation

• ArcView condition (con) command.
• All Urban Classes ? 1 Developed Class.
• All Upland Forest Classes ? 1 Class.
• Wetland Forest Classes ? 1 Class.
• Some Classes not combined (pasture, fresh/salt
  water marsh, water, bare soil).

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30 Classes Down to 12 Classes
Class Land Use
1 Developed
2 Cultivated
3 Grassland
4 Upland Forest
5 Upland Shrub
6 Barren Soil/Bare Rock
7 Marine/Estuarine Unconsolidated shore
8 Estuarine emergent marsh
9 Riverine/lacustrine/palustrine emergent marsh mixed species
10 Wetland Forest
11 Wetland Shrub
12 Water
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What Are the Impacts?
VS
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Original (Landscape)
Metric
Year NP LPI TE SIDI
1984 2854 13.049 17445277 0.8882
1995 2823 12.9369 17476200 0.8869
2001 2865 11.688 17683680 0.8918
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Modified (Landscape)
Metric
Year NP LPI TE SIDI
1984 1599 13.359 13387448 0.8015
1995 1572 14.0912 13553033 0.8012
2001 1590 14.8211 13773480 0.8039
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PD Conclusions

• Combined? only shows slight increased in PD
• Original ? Class 112 increases the most while
  Class 113 is has the highest total PD.
• Loss of detail, information.

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PLAND Conclusions

• Combining classes increases PLAND vs classes that
  were not combined.
• Graph two only shows increased trend in the
  developed class.
• Detail is lost.

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COHESION Conclusions

• Graph two only shows a slight increase in
  cohesion for Class 1.
• In Graph one 111 decreases, 112 increases, 113
  decreases, and 114 decreases in 1984 then
  increases by 1995.
• Detail.

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Conclusions

• Impact on Landscape metrics was straight-forward.
• Loss of detail in class-level metrics.
• Change relationships between patches and classes.

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The End

• Annoying Sound Effects!
• Graphs!
• Amazing Special Effects!
• This is even better than a Duck Tales Episode!