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Geosciences LibreTexts

13: Human Impacts on the Ocean

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    • 13.1: Pollution: Sources & Types
      As the world’s population growth increase and technology continues to spread worldwide, the navigation of the ocean has become a shipping route and dumping ground for human activities. The continuations of human activities deplete biodiversity and disrupt the natural ecosystem in the ocean. According to the Science Learning, wasting such as chemical, sewage, and industrial run-off have a big problem worldwide. Besides that, a country’s without strong government to enforce existence policies, the
    • 13.2: Noise in the Ocean
    • 13.3: Diseases and Pathogens
    • 13.4: Overfishing
    • 13.5: Invasive Species
    • 13.6: Climate & Carbon Cycle
    • 13.7: Eutrophication
      Eutrophication is a process in which there’s an excess nutrient input to water. This process increases the rate of supply of organic matter in an ecosystem and stimulate aquatic plant growth. At normal levels, these nutrients feed growth of organisms called cyanobateria or algae. But with too much nutrients, cyanobacteria grow out of control. Excess algae blocks the sunlight needed by bottom-dwelling plants and leads to decrease in oxygen in the water and consequently leads to negative outcomes.

    Thumbnail: Plastic Pollution covering Accra beach. Image used with permission (CC BY-SA 4.0 international; Muntaka Chasant).