slide1 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Ecosystem Threats and Environmental Risks . PowerPoint Presentation
Download Presentation
Ecosystem Threats and Environmental Risks .

Loading in 2 Seconds...

play fullscreen
1 / 10

Ecosystem Threats and Environmental Risks . - PowerPoint PPT Presentation


  • 136 Views
  • Uploaded on

Ecosystem Threats and Environmental Risks . “Ranching in Brazil”. “Ranching in Brazil”. “Ranching in Brazil”. “Ranching in Brazil”. Pg. 120 – Question 7 (a) & (b) 7 (a) How has ranching disrupted fragile relationships in the tropical rainforest ecosystem? ANS:

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 'Ecosystem Threats and Environmental Risks .' - dylan


Download Now 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
slide1
Ecosystem Threats and

Environmental Risks.

ranching in brazil3
“Ranching in Brazil”
  • Pg. 120 – Question 7 (a) & (b)
  • 7 (a) How has ranching disrupted fragile relationships in the tropical rainforest ecosystem?

ANS:

  • Big areas of forest were cut down, and area was replanted with non-native grasses.
  • Humidity balance affected and area was at risk of erosion.
  • Many animals disappeared.
  • Soil destroyed and nutrients were lost.
  • The forest could not regenerate or sustain itself.
slide6
7 (b) The governments of some tropical countries now regularly set aside fragments of rain forests as conservation reserves. What problems do you see in this attempt at protecting the rain forest ecosystem?

ANS:

  • Isolated forests do not protect life forms living in the area.
  • Large species need large areas (forced inbreeding).
  • Wind and weeds threaten perimeter area.
  • Empty, outside area allows more access and disruption of the ecosystem.
climate zones and environmental risk
Climate Zones and Environmental Risk
  • Tropical Climates
  • Dry Climates
  • Temperate Climates (mild winter/cold winter)
  • Polar Climates
  • Highlands Climate

WHO CARES - DO YOU ?

desertification in the sahel
“Desertification in the Sahel”
  • Sahel is located along the Sahara Desert.
  • Natural Environment:
    • Hot, dry climate
    • 60-100mm falling during 1-3 months of the year
    • Droughts are common
  • Causes of desert advancement:
    • Fragile environment
    • Agricultural practices
    • Population growth
slide10

Analyze value positions taken on environmental issues.

How would each of the following feel about a gold mine being developed in a local wilderness area – what is their position?

President of a local environmental group.

Owner of Regal Goldfields – mine developer.

Owner of a local hunting lodge.

Chief naturalist for the wilderness area.

President of the local Fish and Wildlife Association.

An unemployed fisherman.

The wife of the fisherman – a part-time fish-plant worker.

The mayor of a local town.

The owner of a local trucking company.

The owner of a local restaurant.