|
The zone is defined mainly by its extremely uniform environmental conditions, as reflected in the distinct life forms inhabiting it. The upper boundary between the abyssal zone and the overlying bathyal zone is conveniently defined as the depth at which the water temperature is 4° C (39° F);
|
www.britannica.com/EBchecked/topic/2489/abyssal-zone
www.britannica.com/EBchecked/topic/2489/abyssal-zone
|
|
|
|
temperature 4°C/39°F. Three-quarters of the area of the deep-ocean floor lies in the abyssal zone, which is too far from the surface for photosynthesis to take place. Some fish and crustaceans living there are blind or have their own light sources.
|
www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0...
www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0016300.html
|
|
|
At the average ocean depth of 4000 meters the temperature hovers at ~2 °C (see figure below). ... Where the topography begins to flatten out on the continental rise and finally turns into the abyssal plain the benthic habitat is called the abyssal zone. In the extreme deep of the trenches the benthic habitat is termed the...
|
www.soest.hawaii.edu/oceanography/faculty/drazen/fishes...
www.soest.hawaii.edu/oceanography/faculty/drazen/fishes.htm
|
|
Here temperature decreases as depth increases toward the abyssal zone, since light cannot penetrate through the deeper water. Flora are represented primarily by seaweed while the fauna, since it is very nutrient-rich, include all sorts of bacteria, fungi, sponges, sea anemones, worms, sea stars, and fishes.
|
www.ucmp.berkeley.edu/exhibits/biomes/aquatic.php
|
|
Ocean - Wikipedia, the free encyclopedia
|
|
An ocean (from Greek , Okeanos (Oceanus)) is a major body of saline water, and a principal component of the hydrosphere. Approximately 71% of the Earth's surface (an area of some 361000000 square ...
en.wikipedia.org/wiki/Ocean
|
|
The abyssal zone is found beneath the benthic zone, extending down to the deepest depths of the ocean, ... Temperature; The difference in temperature between the photic, or sunlit, zones nearer to the surface and the deep sea are dramatic. Temperatures vary more in the waters above the benthic zone where thermoclines,
|
marinebio.org/Oceans/Deep/
|
|
Because no light reaches the abyssal zone the temperature generally remains the same throughout the year. It can be anywhere from 0˚C to 5˚C. It maybe cold but the temperature never drops below 0˚C and the water is never frozen.
|
tourguidetim.tripod.com/id5.html
|
|
B. Up until the mid-19th century, scientists believed that conditions in the deep sea were too harsh to support any life at all. ... B. Zone is defined mainly by its extremely uniform environmental conditions, as reflected in the distinct life forms inhabiting it...
|
benson-k.web.lynchburg.edu/oceans/present06/abyssal.htm...
benson-k.web.lynchburg.edu/oceans/present06/abyssal.html
|
|
A Wisdom Archive on abyssal zone ... ARTICLES RELATED TO abyssal zone ... abyssal zone: Encyclopedia II - Physical oceanography - Temperature and potential temperature...
|
www.experiencefestival.com/abyssal_zone
www.experiencefestival.com/abyssal_zone
|
|
