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Unformatted text preview: - Organisms are re-circulated via wind-driven vertical mixing (Ekman Transport)- Many organisms migrate/ are dispersed by currents- Causes upwelling from Earth’s rotation and winds 7) Light attenuates in water (70 meters max in clear water).- Most of Ocean is dark- Life concentrated at surface- Senses other than vision are important- Dark ~ Cold (no isolation), average ocean temp = 4°C 8) Sound travels 4x faster & 1000x further in water 9) Air is more electrically resistive than water- Electro-sensory systems 10) Nutrient inputs are primarily from land- biomass concentrates on coasts – lots of light & &nutrients Coastal areas = Productive nursery areas Ex. salt marshes, kelp forests, and mangroves 11) Ocean has invisible, but real boundaries, separated by:- Light- Salt- Temperature- Currents 12) The Ocean is a “chemical sink”- Salts from land accumulate in the ocean- Ocean absorbs CO2 from the atmosphere...
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- Fall '08
- Precipitation Physical Differences, average ocean temp, air-water interface traps, Feeding ex. whales, Ex. salt marshes