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Marine Ecosystems

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Marine Ecosystems Biology The Divisions of the Ocean The ocean can separate the shore, littoral zone, from the open, or pelagic zone, from the ocean floor, benthic zone. – PowerPoint PPT presentation

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Title: Marine Ecosystems


1
Marine Ecosystems
  • Biology

2
The Divisions of the Ocean
  • The ocean can separate the shore, littoral zone,
    from the open, or pelagic zone, from the ocean
    floor, benthic zone.
  • The presence, photic zone, or absence, aphotic
    zone, of light also differentiates between areas
    of the ocean.

3
  • The ocean is also separated into zones based on
    its distance from the shoreline and water depths.
  • Intertidal zone strip of land between the high
    and low tide lines
  • Neritic zone from the intertidal zone out to
    the edge of the continental shelf.
  • Bathyal zone from the edge of the neritic zone
    to the base of the continental shelf.
  • Abyssal zone lies below 2000 meters and is in
    incomplete darkness.

4
Intertidal
Neritic
5
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6
Life in the Neritic Zone
  • Most of the biomass in this zone in plankton,
    tiny free floating organisms that live in the
    water.
  • Zooplankton is another terms for animal plankton
    and phytoplankton are photosynthetic plankton.

7
Coastal Waters
  • Coral reefs are found in tropical climate zones.
  • Corals are animals that have a mutualistic
    relationship with algae.
  • Corals are very delicate and are in decline
    around the world.
  • In contrast to corals, kelp forests live in cold
    waters and consist of kelp, or seaweed.

8
  • The point where a river flows into an ocean is
    called an estuary.
  • The distinctive feature of an estuary is the
    mixture of fresh and salt water.
  • This area is nutrient rich and are very
    productive environments. They also provide
    habitats for a number of endangered and
    threatened species.

9
  • A watershed is the region of land that drains
    into a river or another body of water.
  • Its important to know that water can be standing
    (wetland, swamps and lakes) or moving (rivers,
    streams, oceans).
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