Pacific Southwest Research Station

Programs and Projects	(RWU-4154)
Institute of Pacific Islands Forestry

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 Research Station, Intstitute of Pacific Islands Forestry

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

Programs and Projects

(RWU-4154)

Institute of Pacific Islands Forestry

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