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Marine Biome and Biodiversity

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Marine Biome and Biodiversity An estimated 50-80% of all life on earth is found under the ocean surface and the oceans contain 99% of the living space on the planet. – PowerPoint PPT presentation

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Date added: 16 August 2019
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Title: Marine Biome and Biodiversity


1
Marine Biome and Biodiversity
2
  • An estimated 50-80 of all life on earth is found
    under the ocean surface and the oceans contain
    99 of the living space on the planet.
  • Less than 10 of that space has been explored by
    humans.
  • A given area in an ocean upwelling zone is as
    productive as the same area in rain forests.

3
  • A mouthful of seawater may contain millions of
    bacterial cells, hundreds of thousands of
    phytoplankton and tens of thousands of
    zooplankton.
  • The Great Barrier Reef, measuring 2,300 km in
    length covering an area more extensive than
    Britain, is the largest living structure on Earth
    and can be seen from space.

4
  • The Blue whale is the largest animal on our
    planet ever (exceeding the size of the greatest
    known dinosaurs) and has a heart is the size of a
    Volkswagen.
  • The swordfish and marlin are the fastest fish in
    the ocean reaching speeds up to 121 kph in quick
    bursts the bluefin tuna may reach sustained
    speeds up to 90 kph.
  • Many fish can change sex during the course of
    their lives. Others, especially rare deep-sea
    fish, have both male and female sex organs.

5
  • Although shark attacks get a lot of attention,
    this is far less than the number of people killed
    each year by elephants, bees, crocodiles,
    lightning or many other natural dangers. On the
    other side of the ledger, we kill somewhere
    between 20-100 million sharks every year through
    fishing activities.

6
Biome
  • a distinct ecological community of plants and
    animals living together in a particular climate

7
  • The Marine Biome covers about three-fourths of
    the Earths surface and includes oceans, coral
    reefs, and estuaries.
  • Divided into 3 main regions
  • 1. Ocean
  • 2. Coral Reefs
  • 3. Estuaries

8
1. Oceans
  • The ocean biome can be separated into several
    different ecosystems, each characterized by
    different biotic and abiotic factors, such as
    temperature, substrate, plants and animals.
  • Biotic living
  • Abiotic Non-living

9
Were going to look at
  • Kelp forests
  • Mangrove swamps
  • Migratory animals

10
Focus for all ecosystems FOOD!
  • In an ecosystem, energy is recycled through
    living organisms.
  • Autotrophs make their own food using energy from
    the sun (plants, algae, bacteria)
  • Heterotrophs need to eat other organisms to get
    energy
  • herbivores (eat plants, algae, bacteria)
  • omnivores (eat plants and animals)
  • carnivores (eat animals primarily)

11
Energy is cycled through the food chain who eats
whom?
12
Basically
13
So, whats at the base of all these aquatic food
chains?
  • One guess

14
Plankton
  • Plankton are tiny open-water plants, animals or
    bacteria.
  • The name is derived from a Greek root that means,
    "wanderer."
  • These organisms range in size from microscopic
    bacteria and plants to larger animals, such as
    jellyfish.
  • Plankton generally have limited or no swimming
    ability and are transported through the water by
    currents and tides.

15
Marine Plankton -- microscopic ocean animals -
magnified 140 times
16
(No Transcript)
17
3 types of plankton
  • phytoplanktonmicroscopic plants and bacteria
    (photosynthetic, these are the autotrophs) ex.
    diatoms
  • 2. zooplanktonmicroscopic animals (eat
    phytoplankton) Dinoflagellates
  • 3. macrozooplanktonlarger fish eggs and larvae
    and pelagic invertebrates (jellyfish)

18
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