biomes. factors that determine biome distribution climate –temperature –moisture –wind...
TRANSCRIPT
BiomesBiomes
Factors that determine biome Factors that determine biome distributiondistribution
ClimateClimate– TemperatureTemperature– MoistureMoisture– WindWind– Ocean currentsOcean currents
Geography – Latitude and altitudeGeography – Latitude and altitude
Soil typeSoil type
Moisture - PrecipitationMoisture - Precipitation
TypeType– RainRain– SnowSnow– FogFog
AmountAmount
SeasonSeason– MonsoonMonsoon
RainshadowRainshadow
Topographic FeaturesTopographic Features
WindPatternsWindPatterns
Ocean CurrentsOcean Currents
Now…for the rest of the periodNow…for the rest of the period
As a group, produce a document (As a group, produce a document (scrawl scrawl on a piece of paperon a piece of paper) indicating) indicating– Your project choice and formatYour project choice and format– What you have done so farWhat you have done so far– What you still need to do to get a 100% on the What you still need to do to get a 100% on the
projectproject
The Terrestrial BiomesThe Terrestrial Biomes
Tropical Rain ForestTropical Rain Forest
200-400 cm annual rainfall200-400 cm annual rainfall
Warm – found around the EquatorWarm – found around the Equator
High species diversityHigh species diversity
Soil infertileSoil infertile
Many plants are epiphytesMany plants are epiphytes
AKA jungleAKA jungle
Threatened by loggingThreatened by logging
DesertDesert
Less than 25 cm annual rainfallLess than 25 cm annual rainfall
Temperature extremesTemperature extremes
Vegetation sparseVegetation sparse
Caused by rainshadowingCaused by rainshadowing
SavannaSavanna
Tropical grasslandTropical grassland
Annual rainfall 90-150 cm, seasonalAnnual rainfall 90-150 cm, seasonal
Open landscape with widely spaced treesOpen landscape with widely spaced trees
Often large herding animalsOften large herding animals
Temperate Deciduous ForestTemperate Deciduous Forest
Annual precipitation 75-250cm.Annual precipitation 75-250cm.
Distinct seasonsDistinct seasons
Hardwood trees that shed their leavesHardwood trees that shed their leaves
Eastern North American, Western EuropeEastern North American, Western Europe
Threaten by logging, developmentThreaten by logging, development
Temperate GrasslandsTemperate Grasslands
AKA prairie, pampasAKA prairie, pampas
Moderate climateModerate climate
Annual rainfall less than deciduous forest, Annual rainfall less than deciduous forest, more than desertmore than desert
Populated by large herding animalsPopulated by large herding animals
Threatened by agriculture and Threatened by agriculture and developmentdevelopment
Fire climaxFire climax
TaigaTaiga
Northern conifer forestsNorthern conifer forests
Cold, wetCold, wet
Threatened by loggingThreatened by logging
TundraTundra
Annual precipitation 25 cmAnnual precipitation 25 cm
Cold, treelessCold, treeless
PermafrostPermafrost
Home to migratory waterfowl, large Home to migratory waterfowl, large mammals and mosquitoesmammals and mosquitoes
Threatened by mining and oil explorationThreatened by mining and oil exploration
ChaparralChaparral
Mild moist winterMild moist winter
Hot dry summerHot dry summer
““California climate”California climate”
Adapted to firesAdapted to fires
Temperate Rain ForestTemperate Rain Forest
Pacific NorthwestPacific Northwest
Mild wet winters, cool foggy summersMild wet winters, cool foggy summers
Old growth trees, mossesOld growth trees, mosses
Threatened by loggingThreatened by logging
Aquatic BiomesAquatic Biomes
75% of the earth’s surface is covered by 75% of the earth’s surface is covered by waterwater
Characterized byCharacterized by– SalinitySalinity– TemperatureTemperature– Light levelsLight levels
Freshwater CommunitiesFreshwater Communities
Lakes cover 1.8% of the Earth’s surfaceLakes cover 1.8% of the Earth’s surface
Rivers and streams cover .8% of the Rivers and streams cover .8% of the earth’s surfaceearth’s surface
Mountain StreamMountain Stream
Swift flowing waterSwift flowing water
Rocks, MossesRocks, Mosses
ColdCold
Freshwater LakeFreshwater Lake
Still waterStill water
Distribution of life Distribution of life depends on light and depends on light and oxygen levelsoxygen levels
SwampSwamp
Flooded forestFlooded forest
MarshMarsh
Wet grasslandWet grassland
““Nature’s kidneys”Nature’s kidneys”
Marine CommunitiesMarine Communities
Shallow watersShallow waters
SurfaceSurface
DepthsDepths
EstuariesEstuaries
Where freshwater and saltwater mingleWhere freshwater and saltwater mingle
Bays, lagoons, inletsBays, lagoons, inlets
Organisms found here have to tolerate Organisms found here have to tolerate changes in salinitychanges in salinity
Beaches and ShoresBeaches and Shores
Organisms need to handle tidal extremes Organisms need to handle tidal extremes and wave actionand wave action
Kelp ForestKelp Forest
Coral ReefCoral Reef
http://www.surfline.com/video/vids/2002/dec/jsps/tues_wm.cfm