1. Wildlife and the Earth
Chapter 6

2. Objectives Describe important areas of earth science as related to F&W
Identify changes on the earth that impact F&W
Explain climate and weather as related to F&W
Explain soil as related to F&W
Describe how earth’s resources are used in succession

3. Earth Science and F&W
Earth Science – study of the environment in which organisms live, grow, and die. Earth Science includes:
Meteorology – study of atmosphere, climate, and weather
Geology – study of solid parts of earth’s surface
Hydrology – study of water found in land areas
Oceanography – study of water found in the ocean

4. Earth Science

5. Meteorology

6. Geology

7. Hydrology

8. Oceanography

9. Earth Changes that Impact F&W
Cyclical Changes – occur on a regular basis and follow a predictable pattern
These create day and night and seasons of the year
Both are due to the movement of the earth in the solar system
Two major movements are rotations and revolutions

10. Cyclical Changes

11. Rotation vs. Revolution
Rotation is the turning of the earth on its axis
One rotation takes 24 hours
Nocturnal species –most active at twilight and night
Diurnal species – active during day and rest at night
Revolution is the movement of the Earth in space around the sun
One revolution takes days
Equinox – sun is directly over equator (1st day of spring and fall)
Solstice – sun at max from equator (1st day of summer and winter)

12. Rotation of Earth on Axis

13. Revolution of Earth Through Space

14. The Atmosphere: Weather and Climate
Atmosphere – the layer of air that surrounds the earth
Weather – the current daily conditions in the atmosphere
Climate – the weather that is generally present in an area
Global warming – the theory that the general climate of the earth is getting warmer

15. Global Warming

16. Global Warming

17. Soil
Soil – the top few inches of the earth’s crust that supports the growth of plants
Soil conservation – preventing loss or damage of soil
Soil living organisms – some are small (bacteria) and others are larger (worms, moles, etc.)
Non-living soil components – either remains of once- living organisms (decayed dead plants and animals) or particles of eroded rock (minerals)
Soil texture – proportion of sand, silt, and clay
Weathering – slow conversion of rock into soil
Soil erosion – washing, blowing, wearing away of soil

18. Soil Conservation

19. Succession
Succession – the natural and progressive change as one community replaces another
Pioneer stage – first stage in succession; begins with bare rock or bare soil
Secondary succession – intermediate steps between pioneer stage and climax
Climax community – the final stage of succession
Succession happens on land and in water

20. Succession on Land

21. Succession in Aquatic Habitat