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25 Cards in this Set
- Front
- Back
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Terrestrial biomes characteristics |
*Ecotone- grade of change (area of intergradation) *follow temperature and precipitation
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Tropical Forest |
(23.5 ) equatorial and subequatorial regions more species when is more humid
Precipitation -rainfall is relatively constant but in tropical dry forest rainfall is seasonal
Temp 25- 29 C
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Desert |
Bands near 30 degrees N and S of equator and interior of continents
animals are mostly nocturnal
Precipitation- low and highly variable- less then 30cm for year
Temp- hot day and cold night
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Savanna |
Equatorial and Subequatorial regions grass and fire adapted plant species
Precipitation - seasonal Temp - warm year 24-29 C
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Chaparral |
midlatitude coastal regions California - mediterranium
Precipitation - highly seasonal with rainy winters and dry summers Temp - summer 30 C , winter 10- 12 C |
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Temperate glassland |
plant adapted to fine animals- bison and wild horses most grass land have been converted to farmland
Precipitation - highly seasonal Temp - winter -10 C and dry , summer 30 C and wet
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Northern Coniferous Forest
or TAIGA |
Largest terrestrial biome (North America & Eurasia) plants - pine, spruce , fir and hemlock (design for brances to bend so they do not brake during winter)
Precipitation - some periodic and some are wet Temp - intense winter -50 to 20 C
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Temperature Broadleaf Forest |
midlatitudes in Northen Hemisphere * Vertical layers are dominated by deciduous trees *beautiful colors like Tennessee
Precipitation - occurs a lot during all seasons as rain or snow Temp - 0 C to 35 C in the summer
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Tundra |
areas in the Arctic alpine tundra on high mountaintops at all latitudes
Permafrost - a permanently frozen layer of soil , prevents water infiltration
moss, grass, lichen
oil and mineral extraction
Precipitation - low and higher in Alpine Tundra Temp - long winters -30 C , summer are cool 10 C
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Aquatic Biomes |
less latitudinal variation 3% salt concentrations (35 parts per thousand)
follow Salt and Light
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Pelagic Zone |
photic zone (photosynthesis ) and aphotic zone |
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Abyssal Zone |
depth of 2,000 to 6,000 m (aphotic zone) |
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Benthic Zone |
organic and inorganic sediment at the bottom of all aquatic zones
it does not matter how deep it is
Benthos - communities of organisms in the benthic zone (feeds on detritus and marine snow) |
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Detritus |
dead organic matter , falls from the productive surface water and is an important source of food |
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Turnover |
Spring & Fall (lakes) semiannual mixing of their waters
oxigenated water from surface goes to the bottom nutrient rich bottom goes to the top ,
water is denses at 4 C |
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Thermocline |
separates the warm upper layer from cold deeper water
temp boundary |
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Oligotrophic Lakes |
nutrient poor and generally oxygen rich
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Eutrophic Lakes |
nutrient rich and often depleted of oxygen if ice covered in winter |
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Zooplankton |
drifting heterotrophs that graze on the phytoplankton
cannot swim against current
jelly , plankton
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Wetland |
Biomes
inundated by water , supports plants adapted to water saturated soil
high organic production and decomposition , low dissolved oxygen
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streams and rivers |
biomes Currents * headwaters are generally cold, clear, turbulent. oxygen rich
downstream waters form rivers, more oxygenated
may have phytoplankton or rooted aquatic plants
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Estuaries |
biomes transition area between river and sea
salinity varies with the rise and fall of the tides nutrient rich, highly productive
oysters, crabs, fish |
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Intertidal zone |
biomes between the tides periodically submerged and exposed by tides O2 and nutrients are high
barnicles, clamsm echinoderms, anemones |
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oceanic pelagic zone |
open ocean biome constantly mixed by wind driven oceanic currents
O2 high , low nutrient concentrations
turn over on photic zones,
covers 70 % of Earths surface
Zooplankton (protists) and Phytoplankton dominant |
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coral reefs |
formed from the calcium carbonate skeleton of coral |
