1 / 11

Ocean Zones

Ocean Zones. Neritic Zone. The Neritic Zone includes: Supratidal Zone Intertidal Zone Subtidal Zone. Neritic Zone. Supratidal zone: Harsh conditions D ry , only stenohaline (organisms that need low salinity) organisms can live here

dexter
Download Presentation

Ocean Zones

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ocean Zones

  2. Neritic Zone • The Neritic Zone includes: • Supratidal Zone • Intertidal Zone • Subtidal Zone

  3. Neritic Zone • Supratidal zone: • Harsh conditions • Dry, only stenohaline (organisms that need low salinity) organisms can live here • Air temperature determines zone temperature (not water) • Water splashes from waves or wind sprays • One organism adaptation is to burrow • Above the high tide line • Salt grass, snakes, mice, ghost crabs

  4. Neritic Zone • Intertidal Zone: • Area of great change • Waves spill over/breakers • Area of great adaptations for living with or without water • Tidal patterns determine temperature • Euphotic (light can go through the water) • Sessile (attached) benthic (bottom) organisms • Burrowing organisms • Adaptations to prevent drying out-close up/burrow • Adaptations to cling to rocks • Between the low tide line and the high tide line • Green algae, barnacles, tube worms

  5. Neritic Zone • Subtidal Zone: • Always covered with water • Complete waves • High productivity (lots of biomass produced) • Lots of nutrients • Euphotic ( light goes through water) • Warm • Sessile (attached) and vagrant (move) benthic (bottom) organisms • Nektonic (free swimming) and planktonic (drifters) organisms • Lots of oil drilling here • Between the low tide line and the edge of the continental shelf • Sailfish, dolphins, sea turtles, kelp

  6. Oceanic Zone • Ocean Zone includes 4 smaller zones • These zones are determined by availability of light • Epipelagic Zone (The sunlight zone) • Mesopelagic Zone (The twilight zone) • Bathypelagic Zone (The midnight zone) • Abyssopelagic Zone (The Abyss zone)

  7. Oceanic Zone • Epiupelagic Zone (The sunlight zone) • Euphotic • Warm • Fewer nutrients • Nektonic (free swimming) and planktonic (drifters) organisms • Complete waves • Extends from the continental shelf • Detritus (organic material) falls below like snow • Lower productivity (production of biomass) • Sharks, whales, Sargassum seaweed

  8. Oceanic Zone • Mesopelagic Zone (The twilight zone) • Fading light/twilight/disphotic • Temperature drops rapidly/permanent thermocline • Pressure increases • Nektonic and zooplankton • Less photosynthesis/ respiration continues • Detritus (organic material)/marine snow • Low productivity (production of biomass) • Zooplankton, squid

  9. Oceanic Zone • Bathypelagic Zone (The midnight zone) • Completely dark/aphotic • Isothermal (same temperature throughout)/cold • Pressure great • Organisms adapted to pressure and no light • Nektonic • Detritus (organic material)/marine snow • Low productivity (production of biomass) • Angler fish

  10. Oceanic Zone • Ayssopelagic Zone (The abyss zone) • Completely dark/aphotic • Isothermal (same temperature throughout)/cold • Pressure greatest • Geothermal vents providing for chemosythetic production of biomass • Higher productivity (production of biomass) • Marine debris (snow) accumulates • Special adaptations of organisms • Vagrant (move) benthic, nektonic,bacteria • Giant tube worms, blind crabs, chemosynthetic bacteria

More Related