USDA Forest Service

Pacific Southwest Research Station

 
Pacific Southwest
Research Station

800 Buchanan Street
Albany, CA 94710-0011
(510) 883-8830
United States Department of Agriculture Forest Service. USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.

Video

Mangroves, Sediment and Water: Impacts of Urban Development and Global Change

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About The Presenter

Katie Friday, USDA Forest Service, Pacific Southwest Region

 

About This Presentation

Running time: 22 minutes and 26 seconds.
Given: September 20, 2006, Mangrove Management Workshop, Palau
Production by: M.J. Furniss and J. Guntle, Communications and Applications, PNW and PSW Research Stations

Topics covered:

  • Mangroves, sediments, and water
  • Mangrove ecology
  • Are mangrove forests expanding?
  • Mangrove ecosystem reinforcement
  • Sometimes forests retreat instead of expand
  • Harvesting and ocean currents
  • Mangrove soils are ever-changing
  • Slumping
  • Which mangroves trap the most sediment
  • Do mangroves protect coral reefs from sediments
  • How do mangroves protect coastlines from waves
  • Density of roots and branches
  • Example: a few strong trees have little effect
  • Width of mangrove along coastline
  • Mangroves removed from coastline- no protection
  • Fill
  • Elevation of fill sites on mangrove
  • Typhoons
  • Sea level changes
  • Unpaved roads and earthmoving
  • Sediment trapping
  • Roads
  • Changes in water circulation
  • Road and causeways may impound water
  • Road
  • Impounding
  • Causeway in Ngatpang, Palau
  • Roads between mangrove and uplands
  • Road
  • Effects of road
  • Effects of rising sea level
  • Mangroves grow toward interior
  • Deeper water mangroves will die
  • Coral reefs and mangroves
  • Old sea level
  • New sea level
  • Summary of management recommendations