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The Abyssal Zone

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Lily Marsden

on 21 February 2013

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Transcript of The Abyssal Zone

The Abyssal Zone By Lily Marsden The Abyssal Zone The word "abyssal" comes from a greek word meaning "bottomless." As its name describes, the abyssal zone has very little light, and is sparcely populated. The abyssal zone is an inhospitable place for life because of its cold temperatures and small supply of nutrients. Another of the harsh conditions in the abyssal zone is the enormous pressure. At depths of 4,000 meters to 6,000 meters, the water pressure is an intense 11,000 psi. Some animals that live in the abyssal zone include tripod fish, giant squid, and deep sea angler fish. Energy in the Abyssal Zone Since the amount of heat and sunlight that reaches the abyssal zone is very small, most organisms depend on chemosynthesis for energy. Other animals that live on the sea floor depend on particles and decaying matter floating down from the shallower ocean. Abyssal Zone Food Web Chemosynthetic bacteria Primary Producer Tubeworms Vent Mussel Pompeii Worm Zoarcid Fish Anemones Dandelion Siphonophore Vent Shrimp Vent Octopus Vent Ratfish Food Web Abyssal Zone Facts Abiotic Factors One abiotic factor that could change the abyssal zone ecosystem is if the temperature or mineral content of the hydrothermal vents changed. This would affect the creatures living around them. Another abiotic factor that would affect the food web is the pressure. If the water pressure increased or decreased, some organisms would not be able to survive there.
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