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Why I Hate PowerPoint

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This presentation delves into the effects of class consolidation on landscape metrics derived from FRAGSTATS, using data from 2001. By consolidating over 30 original classes into 12, we observe significant implications for metrics like PD, PLAND, and COHESION. The findings reveal a loss of detail and altered relationships between landscape patches. The analysis highlights the trade-offs involved in class consolidation and emphasizes the importance of maintaining detailed classifications for accurate landscape assessment.

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Why I Hate PowerPoint

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Presentation Transcript

  1. Why I Hate PowerPoint Also, the Impact of Class Definition on Landscape Metrics Used in FRAGSTATS

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

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

  4. 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).

  5. 30+ Classes Down to 12 Classes

  6. What Are the Impacts? VS

  7. Original (Landscape)

  8. Modified (Landscape)

  9. 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.

  10. 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.

  11. 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.

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

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

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