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Biome Project, The Abyssal Zone
Transcript of Biome Project, The Abyssal Zone
Scott Nearing The abyssal zone is the portion of the ocean that is deeper than 2,000 meters and shallower than 6,000 meters. The abyssal zone is an ecosystem located in the Benthic zone. The water down there is extremely cold, around 4 degrees Celsius (39 degrees Fahrenheit)! The water pressure also creates a lot of problems for organisms living there. It's also very very dark because sunlight doesn't reach down that deep. Instead many organisms thrive off of hydrothermal vents. It doesn't get any rainfall being in the ocean. Abiotic Factors Adaptations The organisms living in the abyssal zone have adapted so that they have the same amount of pressure inside their body as the water pressure outside. The organisms also have adapted to the dark. Some examples are the angler fish's antenna to attract prey, the giant squids huge eyes, and other animals that rely on a strong sense of smell. Biotic Factors Angler fish, black swallower, viper fish, and gulper eels are some predators. Many organisms in the abyssal zone use chemotherapy from the hydrothermal vents. An example of one of these chemosynthetic organism is the tube worm. Crustaceans then feed on the producers of the environment. Location Located in the blue Threats to the abyssal zone Since the abyssal zone is a part of the ocean water pollution could affect this ecosystem, especially near the poles. The water near the poles is cold and dense, which ends up sinking to the ocean floor replacing warmer water in a cycling affect. If harmful chemicals entered this cold water the polluted water could sink down to the abyssal zone and harm the ecosystem. If the hydrothermal vents were to be knocked out it would be catastrophic to this ecosystem. Conservations The abyssal zone is so deep it can only be reached by using specialized submarines, therefore man-made issues aren’t a huge threat, and pollutants rarely reach that deep. However, if an event occurred in which the hydrothermal vents were wiped out, the whole ecosystem could be threatened, because that is the basis of life with out sunlight. Hence humans should take steps to prevent harmful chemicals from entering the oceans in places where a cycling effect occurs. Bibliography http://www.thewildclassroom.com/biomes/abyssal.html
BBC WorldWide Table Of Contents 1. Location
2. Abiotic Factors
4. Biotic Factors
5. Threats to the abyssal zone
7-8. Questions/ Answers
9. Bibliography Questions 1. How deep is the abyssal zone?
2. What is one adptaion of an animal living in the abyssal zone?
3. What oceanic zone is the abyssal zone a part of?
4. Is the water in the abyssal zone extremely cold or extremely hot?
5. What is a cycling effect? Answers 1. 2,000- 6,000 meters.
2. Incresase in body pressure, chemical light, anything from the slide.
3. The Benthic Zone.
4. Very cold.
5. When colder more dense water sinks down and gets replaced by warmer water. Presentation Plan
(Overview) The abyssal zone is located within the Benthic zone of the ocean, basically near the very bottom. The plants and animals of the abyssal zone vary greatly from those found on the surface; this is because they have all acquired specialized adaptations for living at such extremes. The abyssal zone is so deep that it rarely gets polluted. However steps to conserve this ecosystem include preventing harmful chemicals from entering water where a cycling effect occurs. Angler Fish Tube Worm Black swallower Viper Fish Crustaceans