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13 Cards in this Set
- Front
- Back
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saltwater and freshwater cover _____of earths surface
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3/4
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oceans provide many services
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abosorb CO2, habitats, recreation
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life in layers
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life in most aquatic lifesystems is in layers (bottom, middle, top)
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top layer
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euphotic zone: temperature warmer, access to sunlight for photosynthesis/it penetrates the layer, alot of o2
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diffs between land and ocean
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light penetration is minimal in the ocean and so its dark, nutrients sink away, vertical gradients in light temp pressure almost anything, need to fiht gravity much less
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plankton
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weakly swimming, free floating
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nekton
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fish turtles whales
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benthos
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botton dwellers
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decomposers
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breakdown organic compounds (bacteria)
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diatoms and their blooms
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can see the blooms from space (coccolithophore), red tide caused bye algal blooms (dinoflaggelates), pseudo-nitzchia: causes mammal and bird deaths
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trawling
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scrape the ground and remove everything that was there...
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why hard to protect biodiversity?
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invisible impacts, human activity is increasing and people arent educated, lack of legal jurisdiction..some people see the oceans as an inexhaustible resource
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sea turtles
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sea turtle tourism brings in alot of cash, sea turtles can excape trawl nets with grid/ramp things...
many turtles are endangered and extinct |
