ENV100Y5 Lecture Notes - Deep Zone Project, Thermocline, Eutrophication
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ENV100Y5 Full Course Notes
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Chapter 13: marine and coastal systems and fisheries: oceans for us are difficult to explore for humans (deep water ecosystems, we know very little about deep water ecosystems; their productivity etc. We tend to know more about space than we know about the deepest parts of the ocean. They don"t breakdown water chemicals in order to gain oxygen. Ocean layers: surface zone: warmed by sunlight and stirred by wind; water density is at its lowest, transitional zone: temperature starts to drop rapidly. Islands and coastal areas have moderate climates moderate influence on that are close to oceans moderate climate. However, it is hard to heat down as it requires a lot of energy to change water. Benefits for fishes as well since they are located close to coastlines: downwelling: oxygen-rich water sinks where surface currents come together, surface currents are driven by wind, through friction (roughness)
