CSIR (Council of Scientific & Industrial Research) Earth Sciences Ocean Sciences-Biological Oceanography Study Material (Page 1 of 9)

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Coastal Marine Communities and Community Ecology

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  • A community is consisting of the many populations of organisms that interact with one another at a particular location. The physical location of an organism in a community is known as ‘habitat.’ Occupation of an organism within a community is known as ‘niche.’
  • For example, in a marine environment small fishes and coral lives in coral reef that reflects similarity in habitat but their niche is different - one fish might gnaw coral heads while the coral harvest algae.
  • Coastal marine communities are divided into two specific realms. They are-
Coastal Marine Communities

Pelagic Community

  • Pelagic community is the largest marine community. It lies within t…

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Deep-Sea Ecology Including Hydrothermal Vent Communities

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  • The deep-sea environment is dark, almost always very cold, slightly hypersaline (to 36‰) , and highly pressurized. It is an area of sameness. Concentration of oxygen is limited and constant. But beneath the upwelling zone exchange rate of oxygen is high. Deep sea floor is covered with soft bottom sediments from the land and dead organis…

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