Bellringer 09292014 How may human activities affect marine ecosystems Bellringer 09292014 How may human activities affect marine ecosystems Runoff may carry oil or gas from roadways and fertilizer from fields into gulfs and oceans ID: 767000
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Bellringer 09/29/2014 How may human activities affect marine ecosystems?
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.
TEST REVIEW TEK 8.11C Short Term and Long Term Environmental ChangeTest 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
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.
Human Dependence and Modification2 Major Systems: Ocean currentsOcean food webs
Human Modifications Run Off and Pollution- Phosphorus/NitrogenToo much fertilizer used in farmingToo much algae growth - Harmful Algal Blooms “Red Tides”
http://www.youtube.com/watch?v=eozVMJCYHCM STORMWATER RUN OFF
The Great Pacific Garbage Patch http://www.youtube.com/watch?feature=player_detailpage&v=XxNqzAHGXvs
Over-fishing - Harvesting a fish population to a point of diminishing returnsDisrupts the food web May cause organisms to migrate to other areas Human Modifications http://www.youtube.com/watch?v=F6nwZUkBeas
What shark finning looks like http://www.youtube.com/watch?v=U0qkr2cIe5cWhat would happen if sharks disappeared?http://www.youtube.com/watch?v=yzlqXMateRE
OVERFISHING What happens if sharks disappear?http://www.youtube.com/watch?v=yzlqXMateRE
Shark Fins
Human Modifications Artificial Reefshuman-made underwater structure, typically built for the purpose of promotingmarine life Texas Clipper
Artificial Reefs http://www.youtube.com/watch?v=3ofyD1gldbg http://www.youtube.com/watch?v=Q97IAUHICjoTexas Clipper Sinking Video
Human D ependenceWe depend on the ocean for: Oxygen!Phytoplankton contribute 70-80% of the oxygen to Earth’s atmosphere.
Human D ependenceWe depend on the ocean for: WeatherThe oceans absorb a lot of energy from the sun. Warmer water = more evaporation = more rain Cooler water = less evaporation = less rain
Human DependenceWe depend on the ocean for: FoodSeafood provides a lot of world’s protein. Transportation most of the worlds goods are transported by ship Recreation Many countries main source of income is through ocean tourism
October 2, 2013 What is the result in the relationship between mussels as the zebra mussel invades Texas lakes?
Ocean Impact Education Post Pre-AP You will be creating educational posters for the school halls. These posters will use photos, drawings, diagrams, and text to explain a human impact to the ocean. Choose from runoff pollution, invasive species, or overharvesting. Explain it to someone who has never heard of it before. What is the problem, and how have humans caused it? What are some consequences?The posters will also explain how this impact can be reduced, and what students can do to help. Due Friday. We will work on it for a short amount of time tomorrow and Thursday.
Ocean Systems Human Depend Upon Oxygen ProductionCoral ReefsMangrove SwampsEstuariesCurrentsWind PatternsEvaporation & PrecipitationMarine LifeStorage & Exchange of Gases (N & CO2)Sea Ice Seasonal Weather Patterns
Ocean Currents
Mangrove SwampsBiodiversity BiodiversityProduce 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.
Estuaries – where freshwater streams and rivers flow into ocean BiodiversityRecreational FishingShellfish Breeding GroundsProtection from Flood Waters Filter RunoffEnvironmental, Commercial, and Recreational Benefits
Human Impacts on Ocean Systems Coastal DevelopmentAquaculture (fisheries)Commercial & Recreational FishingBurning of Fossil FuelsDeforestationIntroduction of Invasive SpeciesAgricultural Waste and PollutionOil SpillsTrash PollutionUrban Runoff via Storm Drains Raw Sewage PollutionIndustrial Pollution
Consequences Extreme StormsDead ZonesOcean AcidificationHuman DisplacementCollapsed FisheriesHabitat DestructionChange in Precipitation & Weather PatternsDisrupted Gas Storage and ExchangeHuman Health IssuesExtinction and Loss of Biodiversity SiltationGarbage Patches