Vegetation Subgroup Greg Grabas, Carol Johnston, Doug Wilcox, John Mack, Dennis Albert

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Vegetation Subgroup (Greg Grabas, Carol
Johnston, Doug Wilcox, John Mack, Dennis Albert)
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Utilize most recent aerial photography for photo
interpretation prior to sampling

• increase sampling efficiency
• identify major physical changes
• identify invasive plant invasions

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• Metrics not IBI (Exception is FQI)

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• Floristic Quality Index and Conservatism Index
  are effective for comparing wetlands
• Reference scores can differ by Lake and
  hydrogeomorphic wetland types
• Area-based rather than random walk (20 one meter
  plots)
• Conservatism index not affected by area
• Add water-level modifier

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List of Metrics

• 1. Invasives (Not all exotics are invasive -can
  include native species need to create or review
  list of invasives).
• Mean coverage score
• Air photo based coverage when possible
• Significant invasives can differ by lake/wetland
  type.

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List of Metrics

• 2. Carols height metric (may be redundant with
  invasives but easily collected)
• 3. Submergent and floating vegetation
• a) Turbidity intolerant ( cover by quadrat)
• b) Turbidity/high nutrient tolerant

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Sample design Some flexibility

• 1. Stratified random
• 2. Transect(s)

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Field Sampling

• 15-20 one square meter sampling quadrats
• water depth
• sediment characterization
• Random walk - wetland edges and other sensitive
  areas for exotics only early warning system for
  long term monitoring