NTA-NET (UGC-NET) Geography (80) Oceanography-Sea-Level Changes Study Material (Page 3 of 5)

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Marine Pollution: Introduction, Harmful Effects of Marine Pollution, Sources and Effects of Marine Pollution

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Introduction

Harmful effects of chemicals, particles, noise, industrial, agricultural, residential waste, or spread of invasive organisms on ocean waters leads to marine pollution. Most sources are land based. Nonpoint pollution sources include agricultural runoff and windblown debris.

Harmful Effects of Marine Pollution

  • Toxic chemicals adhere to tiny particles, which are either deposited or filtered by feeders and concentrate up the ocean food chains.
  • Leads to oxy…

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Marine Pollution: Specific Examples (Causes and Effects)

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Specific Examples

  • Chinese and Russian industrial pollutants like phenols and heavy metals in Amur River destroyed fishes and estuary soil.
  • Wabamun Lake, Alberta, Canada, known for whitefish, now has very high levels of heavy metals in its sediments and fishes.
  • Acu…

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