Term
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Definition
| ecological associations that occupy broad geographic regions and are characterized by organisms adapted to particular environments |
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Term
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Definition
occur in equatorial regions
warm temp.
11-12 hours of daylight year round
two types: dry and rain
forest floor has little sunlight & poor soil |
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Term
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Definition
grasses and scattered trees
warm temp. year round
30-50 cm rainfall annually
poor soil, fire
dominant herbivores: insects
burrowing animals |
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Term
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Definition
unpredictable low rains (<30cm)
soil temp varies from -30C to 60C
leaves with waxy coating/ succulents
lots of seeds |
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Term
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Definition
dense, spiny shrubs
mild rainy winters/ dry summers
caused by cool ocean currents offshore
"Mediterranean"
vegetation adapted to fires from lightening |
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Term
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Definition
similar to tropical savannas but treeless except near rivers and streams
25-75cm of rain
periodic drought, fire and grazing inhibit tree growth |
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Term
| Temperate Broad-leaf Forest |
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Definition
sufficient moisture (75-150 cm rain)
oak, hickory, birch
temp. -30C to 30C
rich soil |
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Term
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Definition
evergreen trees
pine, hemlock
Northern taiga largest terrestrial biome
long cold winters/ short wet summers |
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Term
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Definition
| Arctic tundra: permafrost |
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