friday 1-30-15 starter: yesterday we discussed photic vs. aphotic oceanic zones. what is the...
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Friday 1-30-15Starter: Yesterday we discussed photic
vs. aphotic oceanic zones. What is the difference between the two zones? List plants/animals found in each zone.
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Oceanic Zones
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Oceanic ZonesSeveral factors used to divide the ocean in to
distinct life marine zones
light availabilitydistance from shorewater depth
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Zones of Light Availabilityphotic (light) zone: upper part of the ocean
where light penetrateseuphotic zone is the topmost part of the
ocean where light is strongestaphotic zone: lower part of the ocean where
very little or no light penetrates
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Photic Zoneeuphotic zone is where nearly all of primary
production from photosynthesis occurshighest concentration of plants
Algae, phytoplankton, and sea grassmost ocean fish live in this zone
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Plants and Animals of Photic Zone
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Aphotic Zoneno living plantshigh pressure, low temperaturesanimals survive by eating detritus or other
animalsanimals must adapt to living with no light
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Zones: Distance from the Shoreintertidal zone: where land an ocean overlapneritic zone: seaward from the low tide line,
the continental shelf out to the shelf breakoceanic zone: beyond the continental shelf
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Life in the Neritic Zonewell oxygenated waterlow water pressurestable temperature and salinity levelshome to photosynthetic life
phytoplanktonsargassum
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Animals and Plants of the Neritic Zone
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Oceanic Zonelarger creatureslife decreases with increasing depthwidest array of life (because it is a very broad
area)
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Animals of the Oceanic Zone
Name some animals found in this zone.
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Water Depthpelagic zone: open ocean of any depthbenthic zone: includes any sea bottom surfaceabyssal zone: subdivision of benthic zone;
deepextremely high water pressurelow temperatures
What sort of organisms do you expect to find in this zone?
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Benthic Zonelow oxygenation of waterlow temperaturesanimals here feed on detritus or other
animalslittle or no plant life (depending on depth of
water)
CHECKPOINT: Why is there little orno plant life?
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Animals of the Benthic Zone
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Abyssal Zonefloor of deepest parts of oceanmost bizarre animals found hereincredible water pressureabsolutely no lightvery cold temperatureshard to survive
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Animals of the Abyssal Zone
Why does this fish have a larger eye?
Fish with little or no pigment ?
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Organisms Adaptations Videohttps://www.youtube.com/watch?
v=2uQVkMVweS8
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Tuesday 2-3-15Oceanic Zones MuralsGroups of three to four peopleOnce your group is chosen, see Mrs. Slusher
for topicWe will be making a mural or work of art to
be hung on the wallRequired info:
Name and description of zoneSeveral animals found thereFacts about that zonePicturesTURN THEM IN TO ME AT MY DESK FOR IMMEDIATE GRADING!