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Scientific Review of the Draft Environmental Impact Statement Drakes Bay Oyster Company Special Use Permit (2012) / Chapter Skim
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Appendix C: NPS Intensity Definitions
Pages 69-72

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From page 69...
... Measurable changes could include modifications in biomass or in the diversity of species that typically use eelgrass beds for foraging or nursery grounds. Major: Impacts would be highly noticeable and would substantially influence natural resources, e.g., individuals or individual plants, eelgrass beds, or natural processes (such as eelgrass colonization and/or regeneration)
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From page 70...
... Major: Impacts would be highly noticeable and would substantially influence natural resources, e.g., individuals or groups of species, communities, or natural processes." Wildlife and Wildlife Habitat: Harbor Seals "Minor: Impacts would be localized and slightly detectable, but would not affect the overall structure of any natural community. Moderate: Impacts would be clearly detectable and could appreciably affect individuals or groups of species, communities, or natural processes.
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From page 71...
... Major: Major impacts are short-term and long-term detectable impacts that would change the chemical, physical, or biological integrity of waters of Drakes Estero to the degree that the action would alter the historical baseline or desired water quality conditions." Soundscapes "Minor: Human-caused noise would be at a level that causes vocal communication to be difficult between people separated by more than 32 feet, and the natural soundscape is interfered with less than 5 percent of the time. Moderate: Human-caused noise would be at a level that causes vocal communication to be difficult between people separated by 32 to 16 feet, and the natural soundscape is interfered with 5 to 10 percent of the time.
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Key Terms

  • slightly detectable
  • overall structure
  • natural processes
  • quality conditions
  • causes vocal

  • vocal communication
  • desired water
  • people separated
  • flood damage
  • natural soundscape

  • individual plants
  • substantially influence
  • highly noticeable
  • historical baseline
  • potential flood

  • appreciably affect
  • drakes estero
  • floodplain management
  • intensity definitions
  • critical habitat

  • ecosystem health
  • time following
  • brief time
  • harbor seals
  • eelgrass colonization

  • measurable changes
  • deis distinguishes
  • regional economy
  • affect individual
  • natural community


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