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BIOMES IN THE OCEAN. LIFE ZONES IN THE OCEAN HORIZONTAL ZONES –EXTENDING FROM LAND OUT TO SEA COASTAL, PELAGIC, NERITIC, OCEANIC VERTICAL ZONES –DISTANCE.

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Presentation on theme: "BIOMES IN THE OCEAN. LIFE ZONES IN THE OCEAN HORIZONTAL ZONES –EXTENDING FROM LAND OUT TO SEA COASTAL, PELAGIC, NERITIC, OCEANIC VERTICAL ZONES –DISTANCE."— Presentation transcript:

1 BIOMES IN THE OCEAN

2 LIFE ZONES IN THE OCEAN HORIZONTAL ZONES –EXTENDING FROM LAND OUT TO SEA COASTAL, PELAGIC, NERITIC, OCEANIC VERTICAL ZONES –DISTANCE BELOW SEA SURFACE NEUSTIC, EUPHOTIC, APHOTIC BENTHIC ZONE –SEA BOTTOM HABITANTS

3 HORIZONTAL ZONE COASTAL ZONE (INTERTIDAL) –Region where tides expose the sea bottom for some part of the day. Between High Tide and Low Tide. –AKA: Littoral, Nearshore, Intertidal –Organizms adapted to harsh environmental changes

4 PELAGIC ZONE LOCATED SEAWARD OF THE COSTAL ZONE’S LOW-TIDE MARK. CONTAINS VAST OPEN WATER OF THE OCEAN. TWO SUBDIVISIONS: –NERITIC –OCEANIC

5 PELAGIC ZONE NERITIC ZONE –WATER OUTLYING THE CONTINENTAL SHELF –USUALLY EXTEND TO A DEPTH OF 600FT –SUNLIGHT PENETRATES ENTIRE COLUMN –GREATEST DENSITY AND DIVERSITY OF LIFE

6 PELAGIC ZONE OCEANIC ZONE –REGION OF THE SEA EXTENDING FROM THE EDGE OF THE CONTINENTAL SHELF, OVER THE CONTINENTAL SLOPE, AND OVER THE OCEAN FLOOR –DARKNESS, HIGH PRESSURES –VERTICAL ZONES ARE SIGNIFICANT HERE

7 BENTHIC ZONE THE OCEAN FLOOR CONTAINS ALL HABITANTS OF THE SEA BOTTOM COASTAL, CONTINENTAL SHELF, DEEP OCEAN…

8 VERTICAL ZONES EPIPELAGIC ZONE –PHOTIC ZONE OR SUNLIGHT ZONE MESOPELAGIC ZONE –DISPHOTIC ZONE OR TWILIGHT ZONE BATHYPELAGIC ZONE –APHOTIC ZONE OR MIDNIGHT ZONE ABYSSOPELAGIC ZONE –APHOTIC ZONE OR MIDNIGHT ZONE HADOPELAGIC ZONE –APHOTIC ZONE OR MIDNIGHT ZONE

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11 EPIPELAGIC ZONE PHOTIC ZONE ENOUGH SUNLIGHT FOR PHOTOSYNTHESIS PRIMARY AREA OF FOOD PRODUCTION SURFACE TO 200M

12 MESOPELAGIC ZONE DISPHOTIC ZONE (DYSPHOTIC) NOT ENOUGH SUNLIGHT FOR PHOTOSYNTHESIS 200M TO 1000M

13 MIDNIGHT ZONES NO SUNLIGHT 1000M TO BOTTOM (AROUND 11,000M LOWEST) LOW DENSITY AND DIVERSITY OF LIFE 1000M – 4000M : BATHYPELAGIC ZONE 4000M – 6000M : ABYSSOPELAGIC ZONE 6000M – 11000M : HADOPELAGIC ZONE

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15 LIFESTYLES 3 BASIC LIFESTYLES –PLANKTON –NEKTON –BENTHOS

16 PLANKTON FLOATERS OR VERY POOR SWIMMERS 2 GROUPS –PHYTOPLANKTON : PRODUCERS, PHOTOSYNTHESIZERS –ZOOPLANKTON : CONSUMERS

17 PHYTOPLANKTON MUST LIVE IN PHOTIC ZONE MOST ABUNDANT IN SHALLOW COASTAL AREAS OR IN UPWELLING ZONES BASIS OF OCEANIC FOOD CHAIN

18 PHYTOPLANKTON CYANOBACTERIA DIATOMS COCCOLITHOPHORES DINOFLAGELLATES

19 ZOOPLANKTON FORAMINIFERS RADIOLARIANS COMBJELLIES ANTHROPODS LARVAE

20 PLANKTON MEROPLANKTON –SPEND ONLY PART OF THEIR LIFE CYCLES AS PLANKTON –ARE THE LARVAL STAGES OF ORGANISMS THAT GROW TO BECOME BENTHIC OR NEKTONIC ORGANISMS HOLOPLANKTON –SPEND THEIR ENTIRE LIFE CYCLES AS PLANKTON

21 NEKTON FREE SWIMMERS MANEUVER ACTIVELY IN WATER COLUMN FOUND IN THE WATER COLUMN FROM SURFACE TO FLOOR

22 NEKTON 5 CATEGORIES –REPTILES –MAMMALS –FISH –ANTHROPODS –MOLLUSKS

23 NEKTON MARINE REPTILES –TURTLES –SNAKES –CROCODILES –IGUANAS

24 NEKTON MARINE MAMMALS –WHALES –SEALS –OTTERS –MANATEES –DOLPHINS

25 NEKTON BONY FISH –TUNA –BARRACUDA –EELS –ANGLER FISH

26 NEKTON CARTILAGINOUS FISH –SHARKS –RAYS –SKATES

27 NEKTON MARINE ANTHROPODS –SHRIMP –CRABS –LOBSTERS –HORSESHOE CRABS

28 NEKTON MOLLUSKS –SQUID –OCTOPI –SNAILS –MUSSELS –CLAMS

29 BENTHOS BOTTOM DWELLERS LIVE ON OR ARE ATTACHED TO BOTTOM FILTER FEEDERS OR SCAVENGERS 2 TYPES –SESSILE : LIVE ATTACHED TO BOTTOM –VAGRANT : ABLE TO MOVE

30 BENTHOS - SESSILE BARNACLES SPONGES CORALS SEA ANEMONES OYSTERS CLAMS STEAMERS, MMM

31 BENTHOS - VAGRANT CRABS SEA STARS SEA CUCUMBERS SEA URCHINS BRITTLE STARS

32 SEA LIFE


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