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ECOSYSTEM
Self sustaining collection of organisms Biotic factors: Living components Abiotic factors: Nonliving components
HEALTHY ECOSYSTEMSDiversityMore diverse = More Stable the environment
Every animal has a specific role (Niche)
UNHEALTHY ECOSYSTEMSLittle or no
diversityEcosystem is more susceptible to diseases
No organisms left to use or appreciate
HOW DO WE GET DIFFERENT ECOSYSTEMS?Sun provides energy to Earth Equator: direct sunlight Poles: low angle of sunlight
BIOMES
Broad geographic regions Characterized by climate & major vegetation Aquatic Biomes: 75% of Earth Terrestrial Biomes: 25% of Earth
TROPICAL RAINFOREST
Equatorial regions
200-400 cm rain/year
25-29° C
Species diversity extremely high
DESERT
Near 30° N and S latitude
Less than 30° cm rain/year
Wide fluctuations in temperature
Many species nocturnal
CHAPPARAL
Mid-latitude coasts
Rainfall is seasonal
Moderate year round weather
High diversity of amphibians
TEMPERATE GRASSLAND
Central North America
30-70cm rain/year (droughts common)
Cold winters, Hot summers
Historical IL Biome
CONIFEROUS FOREST
Taiga
Northern hemisphere
30-70cm rain/year
Cold long winters
Short warm summers
Cone-bearing trees
TEMPERATE BROADLEAF FOREST
Deciduous Forest
Mid-latitudes of Northern Hemisphere
70-200cm rain/year
Average winters, hot humid summers
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