Distribut!on and Taxonomy of family Sternopt'Jchidae and Photichthyidae and biology of the genus Vinciguerria (Photichthyidae) in the west coast of the Indian EEZ (TH 112)
The oceanic environment is the biggest biome on earth and its biota plays a significant role in global, biological and chemical cycles. (Lawrence and Katherine, 1995). Most of the world's oceans with the exception of the Arctic and Antarctic and possibly parts of the Central Pacific have a regi...
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| Format: | Thesis |
| Language: | English |
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2002
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| Online Access: | http://eprints.cmfri.org.in/7158/ http://eprints.cmfri.org.in/7158/1/TH-112.pdf |
| Summary: | The oceanic environment is the biggest biome on earth and its biota plays a significant role in global, biological and chemical cycles. (Lawrence and Katherine, 1995). Most of the world's oceans with the exception of the Arctic and Antarctic and possibly parts of the Central Pacific have a region at depth that reflects or scatters sound. This is known as the Deep scattering layer (DSL). The Deep scattering layers in the oceans were first recognized in 1942. The DSL is a layer of living organisms ranging from about microscopic zooplankton, shrimps, meso pelagic fishes and cephalopods that prey on one another. This layer migrates vertically in the water column depending on light intensity and occurs at depths between 230-800m during the day and 50-100m depth during night. The DSL is an important ecosystem of the world oceans and supports a wide assembly of zooplankton, macro and micro nekton. |
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