Succession The gradual re-growth of a community of species in an area that currently has none due to...
-
Upload
beverly-wilson -
Category
Documents
-
view
217 -
download
0
description
Transcript of Succession The gradual re-growth of a community of species in an area that currently has none due to...
![Page 1: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/1.jpg)
Succession•The gradual re-growth of a community of species in an area that currently has none due to extreme conditions
![Page 2: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/2.jpg)
2 types of Succession•Primary Succession: development of a community that occurs in an area where life was not previously supported (no soil present)–Examples: Lava flow, glacial retreat, bare rock, sand dunes
•Secondary Succession: replacement of species following a disruption of the previous community (soil is present)–Examples: floods, hurricanes, tornados, human activity
![Page 3: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/3.jpg)
Primary Succession
![Page 4: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/4.jpg)
Secondary Succession
![Page 5: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/5.jpg)
Humans are part of the Earth's ecosystem. Human activities
can either deliberately or inadvertently
alter the balance of an ecosystem.
![Page 6: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/6.jpg)
What do you Think???
How do human activities affect the environment?
![Page 7: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/7.jpg)
With more info…
Will you change your perspective or will you
feel the same way?
![Page 8: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/8.jpg)
Human impacts on the Environment
Global warming
Use of machinery by humans seems to be increasing CO2 levels in the air. CO2 prevents heat from escaping, causes slight world wide temperature increases
Rising water temperatures causes coral bleaching
![Page 9: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/9.jpg)
Human impacts on the environment
Deforestation• Caused by demand for wood products, need for space, farmland, housing, roads • Deforestation causes habitat fragmentation Animals and plants are forced into confined areas
![Page 10: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/10.jpg)
Habitat Fragmentation
![Page 11: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/11.jpg)
Habitat Fragmentation
![Page 12: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/12.jpg)
Human impacts on the Environment
Ozone depletion• Caused by aerosol chemicals called chlorofluorocarbons (CFCs)• CFC’s– Escape into atmosphere, reacts breaking down
the ozone (O3, a protective atmospheric layer)
– UV rays penetrate the atmosphere and cause harm to many organisms
![Page 13: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/13.jpg)
“HOLE” in the ozone (O3)
![Page 14: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/14.jpg)
Human impacts on the Environment
Fishing activities• Demand for fish and shellfish
• Commercial Fishing be harmful to environment in many ways
![Page 15: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/15.jpg)
Human impacts on the environment
Invasive species (EXOTIC SPECIES)•introduced by people accidentally or intentionally
• Can cause problems if no natural enemies are present
Cane toad was introduced to Australia to control cane beetles, pest insects that destroy sugar cane crops
![Page 16: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/16.jpg)
Human impacts on the Environment
Exotic pet trade• Capture and sell wild animals from exotic locations
• Wealthy buyers and collectors desire obscure animals
• Animals removed from their habitat causes an imbalance in the ecosystem
![Page 17: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/17.jpg)
![Page 18: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/18.jpg)
![Page 19: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/19.jpg)
Importance of the EnvironmentBiodiversity = Many different types of organisms
• Organisms depend upon one another
• Interfering with one Organism can have aRipple effect to many w/in the habitat
![Page 20: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/20.jpg)
Importance of the environment
Natural resources: Non-renewable includes fossil fuels (petroleum, coal)• Renewable includes animals, plants, water, wind, etc.–even renewable
resources can run out
![Page 21: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/21.jpg)
Importance of the Environment
Natural resources Renewable energy sources include wind power, geothermal energy, ocean currents
![Page 22: Succession The gradual re-growth of a community of species in an area that currently has none due to extreme conditions.](https://reader036.fdocuments.in/reader036/viewer/2022081521/5a4d1af17f8b9ab05997dfbf/html5/thumbnails/22.jpg)
Pollution:• Agricultural–DDT–Fertilizers–Animal wastes (nitrogen)
• Homes–Strong cleaning agents
• Industry–Toxic gases and wastes–Acid rain