Biomes, Zonation, & Succession (2.4)
Section Links: |
NotesBIOMES AND ZONATION NOTES (2.4A)Succession Notes (2.4b)REVIEWBiome Review kahootJeopardy Review (2.1, 2.4, & 2.5) |
What is a Biome?
World Biomes Terrestrial Biome information Temperature & Precipitation Data Activity |
Types of Biomes & Characteristics |
What Causes a Biome?
Abiotic factors are non-living factors that affect the environment. 3 Major Factors determine the distribution of Biomes: Insolation, Precipitation, and Temperature (all 3 are major factors in climate)
Characteristics of Biomes |
Temperature Factors
Temperature is influenced by the location to the sun and tilt of the earth's axis.
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Tricellular Model
Air circulates across the globe due to the Coriolis Effect. The Coriolis Effect is the rotation of the earth (which causes our night and day). However, this rotation, also causes movement of winds on the earths surface. Those winds do NOT travel in a straight path, which ultimately causes the winds. This leads to the Tricellular Model of wind and rain patterns.
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The Tricellular Model of atmospheric circulation
Principles:
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The Tricellular Model in a Nutshell:
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Precipitation/ Evaporation Ratio
P/E ratio = measurement of the amount of precipitation per water lost via evaporation. Increasing temperatures, increases evaporation generally. If evaporation outpaces the rate of rain/snowfall, plants can still be without moisture, regardless of how much water/ moisture is in the air. It is also a measure of productivity within a Biome, as the closer the P/E ratio is to 1 the more likely the Biome/ ecosystem is to be productive.
Texas Database P/E ratio Activity
Precipitation and Evaporation Database ----- Excel File with usable data Drought data from 2011- 2016 for Texas El Nina/ El Nino year dates |
Zonation
Biomes/ Ecosystems change as abiotic factors change within an area. Zonation is caused by an abiotic gradient of some sort. Examples include:
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Succession Overview
Ecological Succession- good overview
Ecological Succession: Change is good - Crash Course Climax Communities- video GPP/NPP and Succession Soil Fungi importance Soil Biology Primer- Understanding Soil |
Mount St. Helen's Eruption
Life Returns to Mt. St. Helen's Mt. St. Helen's Ecosystem Life After Mt. St. Helen's (full documentary) |