Bellringer 09/29/2014 How may human activities affect marine
ecosystems?
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Bellringer 09/29/2014 How may human activities affect marine
ecosystems? Runoff may carry oil or gas from roadways and
fertilizer from fields into gulfs and oceans. Overharvesting causes
fish populations to be removed faster than they can reproduce.
Artificial reefs can provide a habitat or location for food and
protection from predators for marine life.
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TEST REVIEW TEK 8.11C Short Term and Long Term Environmental
Change Test Corrections Procedures - Complete Test Correction
Page(s) - Use Complete Thoughts & Sentences - Demonstrate YOU
KNOW WHY THE CORRECT ANSWER is CORRECT!!! ALL CORRECTIONS DUE
WEDNESDAY 10/1/2014
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8.11D - Recognize human dependence on ocean systems and explain
how human activities such as runoff, artificial reefs, or use of
resources have modified theses systems.
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Human Dependence and Modification 2 Major Systems: Ocean
currents Ocean food webs
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Human Modifications Run Off and Pollution - Phosphorus/Nitrogen
Too much fertilizer used in farming Too much algae growth - Harmful
Algal Blooms Red Tides
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http://www.youtube.com/watch?v=eozVMJCYHCM STORMWATER RUN
OFF
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The Great Pacific Garbage Patch
http://www.youtube.com/watch?feature=player_detailpage&v=XxNqzAHGXvs
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Over-fishing - Harvesting a fish population to a point of
diminishing returns Disrupts the food web May cause organisms to
migrate to other areas Human Modifications
http://www.youtube.com/watch?v=F6nwZUkBeas
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What shark finning looks like http://www.youtube.com/watch?v=
U0qkr2cIe5c What would happen if sharks disappeared?
http://www.youtube.com/watch?v=yzlq XMateRE
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OVERFISHING What happens if sharks disappear?
http://www.youtube.com/watch?v=yzlqXMateRE
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Shark Fins
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Human Modifications Artificial Reefs human-made underwater
structure, typically built for the purpose of promoting marine life
Texas Clipper
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Artificial Reefs http://www.youtube.com/watch?v=3ofyD1gldbg
http://www.youtube.com/watch?v=Q97IAUHICjo Texas Clipper Sinking
Video
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Human Dependence We depend on the ocean for: 1.Oxygen!
Phytoplankton contribute 70-80% of the oxygen to Earths
atmosphere.
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Human Dependence We depend on the ocean for: 2.Weather The
oceans absorb a lot of energy from the sun. Warmer water = more
evaporation = more rain Cooler water = less evaporation = less
rain
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Human Dependence We depend on the ocean for: 3.Food Seafood
provides a lot of worlds protein. 4.Transportation most of the
worlds goods are transported by ship 5.Recreation Many countries
main source of income is through ocean tourism
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October 2, 2013 What is the result in the relationship between
mussels as the zebra mussel invades Texas lakes?
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Ocean Impact Education Post Pre-AP You will be creating
educational posters for the school halls. 1.These posters will use
photos, drawings, diagrams, and text to explain a human impact to
the ocean. 2.Choose from runoff pollution, invasive species, or
overharvesting. Explain it to someone who has never heard of it
before. 3.What is the problem, and how have humans caused it? What
are some consequences? 4.The posters will also explain how this
impact can be reduced, and what students can do to help. 5.Due
Friday. We will work on it for a short amount of time tomorrow and
Thursday.
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Ocean Systems Human Depend Upon Oxygen Production Coral Reefs
Mangrove Swamps Estuaries Currents Wind Patterns Evaporation &
Precipitation Marine Life Storage & Exchange of Gases (N &
CO2) Sea Ice Seasonal Weather Patterns
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Ocean Currents
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Mangrove Swamps Biodiversity Biodiversity Produce seafood,
fruits, medicines, fiber, and wood. Stabilize shores by trapping
sediments and building land. Improve water quality by filtering
runoff and polluted waters. Protect the climate by absorbing carbon
dioxide and reducing the amount of greenhouse gas.
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Estuaries where freshwater streams and rivers flow into ocean
Biodiversity Recreational Fishing Shellfish Breeding Grounds
Protection from Flood Waters Filter Runoff Environmental,
Commercial, and Recreational Benefits
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Human Impacts on Ocean Systems Coastal Development Aquaculture
(fisheries) Commercial & Recreational Fishing Burning of Fossil
Fuels Deforestation Introduction of Invasive Species Agricultural
Waste and Pollution Oil Spills Trash Pollution Urban Runoff via
Storm Drains Raw Sewage Pollution Industrial Pollution
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Consequences Extreme Storms Dead Zones Ocean Acidification
Human Displacement Collapsed Fisheries Habitat Destruction Change
in Precipitation & Weather Patterns Disrupted Gas Storage and
Exchange Human Health Issues Extinction and Loss of Biodiversity
Siltation Garbage Patches