bellringer n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Bellringer PowerPoint Presentation
Download Presentation
Bellringer

Loading in 2 Seconds...

play fullscreen
1 / 33

Bellringer - PowerPoint PPT Presentation


  • 69 Views
  • Uploaded on

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.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Bellringer' - kelly-hill


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
bellringer
Bellringer

09/29/2014

How may human activities

affect marine ecosystems?

bellringer1
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.

slide3

TEST REVIEW TEK 8.11CShort Term and Long Term Environmental ChangeTest Corrections Procedures- Complete Test Correction Page(s)- Use Complete Thoughts & Sentences- DemonstrateYOU KNOW WHY THE CORRECT ANSWER is CORRECT!!! ALL CORRECTIONS DUE WEDNESDAY 10/1/2014

slide4

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 m odification

Human Dependenceand Modification

2 Major Systems:

Ocean currents

Ocean food webs

human modifications

Human Modifications

Run Off and Pollution

-Phosphorus/Nitrogen

Too much fertilizer used in farming

Too much algae growth

-Harmful Algal Blooms

“Red Tides”

stormwater run off
STORMWATER RUN OFF

http://www.youtube.com/watch?v=eozVMJCYHCM

the great pacific garbage patch
The Great Pacific Garbage Patch
  • http://www.youtube.com/watch?feature=player_detailpage&v=XxNqzAHGXvs
human modifications1

Human Modifications

Over-fishing -

Harvesting a fish population to a point of diminishing returns

Disrupts the food web

May cause organisms to migrate to other areas

http://www.youtube.com/watch?v=F6nwZUkBeas

what shark finning looks like http www youtube com watch v u0qkr2cie5c

What shark finning looks likehttp://www.youtube.com/watch?v=U0qkr2cIe5c

What would happen if sharks disappeared?

http://www.youtube.com/watch?v=yzlqXMateRE

overfishing
OVERFISHING
  • What happens if sharks disappear?
  • http://www.youtube.com/watch?v=yzlqXMateRE
human modifications2

Human Modifications

Artificial Reefs

human-made underwater structure, typically built for the purpose of promoting

marine life

Texas Clipper

artificial reefs
Artificial Reefs

Texas Clipper Sinking Video

http://www.youtube.com/watch?v=Q97IAUHICjo

http://www.youtube.com/watch?v=3ofyD1gldbg

human d ependence

Human Dependence

We depend on the ocean for:

Oxygen!

Phytoplankton contribute 70-80% of the oxygen to Earth’s atmosphere.

human d ependence1

Human Dependence

We depend on the ocean for:

Weather

The oceans absorb a lot of energy from the sun.

Warmer water = more evaporation = more rain

Cooler water = less evaporation = less rain

human d ependence2

Human Dependence

We depend on the ocean for:

Food

Seafood 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
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
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
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
mangrove swamps biodiversity
Mangrove SwampsBiodiversity
  • 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.
estuaries where freshwater streams and rivers flow into ocean
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
human impacts on ocean systems
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
consequences
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