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Estuarine and Coastal Marsh Communities. Objectives: Describe estuary, coastal marsh, and their relationship to the ocean community. Introduce life cycles of the oopu and salmon, and discuss the physiological adaptations of each. Describe abiotic factors that shape these environments.

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estuarine and coastal marsh communities

Estuarine and Coastal Marsh Communities

Objectives:

Describe estuary, coastal marsh, and their relationship to the ocean community.

Introduce life cycles of the oopu and salmon, and discuss the physiological adaptations of each.

Describe abiotic factors that shape these environments.

Discuss reasons to protect these environments.

estuaries
Estuaries
  • semi-enclosed areas where fresh water and seawater meet and mix
  • soft mud bottom
  • Includes: bays and sounds, salt water marshes, mangrove forests
coastal marshes wetlands
Coastal Marshes (wetlands)

areas that are partially flooded during high tide

dominated by grasses and salt-tolerant land plants

Natural filter

abiotic factors
AbioticFactors

1. pollution

2. salinity

  • fluctuates widely
  • varies with depth

3. tidal currents

4. water temperatures

5. water clarity due to sediment

importance
Importance

Most productive ecosystems in the world

provide habitat for many species of birds

nurseries for fishes and marine invertebrates

diadromous fish
Diadromous fish
  • use both fresh and salt water habitats during their life cycle
  • Examples:
    • Salmon
    • O’opu (Hawaii)
o opu
O’opu

Native fishes (gobies)

eggs hatch in streams and hatchlings get washed into the ocean

after 4 to 6 months, head back upstream to spawn (lay eggs)

slide8

climb waterfalls

suction-cup pectoral fins

dip head into water to catch their breath

http://hawaii.gov/dlnr/dar/pubs/Nopili.pdf

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Time to work on your coral zonation lab …. Ask questions now. Due tomorrow!