Term
| 4 methods of habitat destruction |
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Definition
- trawling
- landfill
- dredging
- deforestation
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Term
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Definition
- damages bottom - "clear cutting"
- incidental bycatch
- destroys 3d bottom structure
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Term
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Definition
- destroys wetlands, including nursery habitats and natural filters
- damming/water diversions
- reduces freshwater to estuaries
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Term
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Definition
- damages bottom
- increases erosion rate
- increasesaount of sediments
- releases pollutants from sediment
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Term
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Definition
- increases erosion and sedimentation
- loss of spawning habitat
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Term
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Definition
- eutrophocation
- sewage
- oil
- toxic chemicals
- solid wastes
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Term
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Definition
- increased nutrient input
- can create algal blooms
- increased turbidity
- smothers other species
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Term
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Definition
- raw - health hazard
- increased bacteria load
- smudge coats bottom and smothers organisms
- leads to eutrophocation
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Term
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Definition
- toxic
- coats fur and feathers
- smothers intertidal
- estuaries especially vulnerable
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Term
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Definition
- pesticides (DDT, from runoff)
- PCBs, dioxins (carcinogens)
- heavy metals (mercury, led, neurotoxins)
- radioactive wastes
- bioaccumilation
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Term
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Definition
| increased concentration of pollutants at higher trophic levels |
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Term
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Definition
- plastic
- rubber
- glass
- metal
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Term
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Definition
- ballast water
- international transportation
- loss of native biodiversity
- invaders lack predators, pathogens, parasites
- outcompete species
- example: caulerpa taxifolia
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Term
| solutions to ocean crises |
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Definition
- conservation
- habitat restoration
- artificial reefs
- water quality measures
- education
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Term
| temperature of frozen seas |
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Definition
| less than -50 degrees celcius |
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Term
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Definition
| patches of water between frozen lakes, gives animals access to sea, air and land |
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Term
| do the frozen seas have fast moving currents? |
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Definition
| yes, fast ice movement can trap animals for months |
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Term
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Definition
| polar bears stake out ice/water holes because the whales can only stay underwater for 20 minutes and must come up for air. when whales come up for air, polar bears attack. |
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Term
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Definition
| scavengers, depend on polar bear hunting to survive |
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Term
| which frozen seas animals molt? |
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Definition
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Term
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Definition
| pieces of floating sea ice that can flow together and consolidate in to a single ice mass. pack-ice moves with the sea currents. |
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Term
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Definition
| sea ice attached to the shore |
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Term
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Definition
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