Biomes
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Biomes

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This slideshow discusses the different biomes found throughout the world.

This slideshow discusses the different biomes found throughout the world.

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Biomes Biomes Presentation Transcript

    • Broad categories of ecosystems
      • Similar vegetation and wildlife
    • Main categories
      • Desert
      • Grassland and Tundra
      • Forest
      • Mountain
      • www.sustainableplanet.yolasite.com
  • http://www.marietta.edu/~biol/biomes/biomemap.htm World Biomes
    • Deserts
      • Subtropics – low moisture
    • Forests
      • Mid-latitudes, equator – higher moisture
      • East coast
    • Tundra
      • Polar regions
      • Low moisture, low temperature
    View slide
    • Grasslands
      • Temperate – low moisture, interiors
    • Mountains
      • High elevation – rapid temperature change, variable precipitation
      • Plate boundaries
    View slide
    • Evaporation > Precipitation
    • Tropical
      • Hottest temps
      • Driest climate
    • Temperate
      • More fluctuation in temps
      • More precipitation
    • Cold
      • Temp extremes
    http://www.uwsp.edu/geo/faculty/ritter/geog101/textbook/climate_systems/tropical_desert.html http://www.sethwhite.org/high%20arctic%20scenery.htm
    • Small leaves
    • Deep roots and shallow roots
    • Store biomass in seeds
    • low growing
    • wax on leaves
    • Store water in leaves
    • hair on leaves
      • Reduce evaporation
      • Reflect sunlight
      • Inhibit air circulation
    • Efficient photosynthesis
      • Only open stomata at night
      • Fewer stomata
    • Avoid Heat
      • Hibernate, use shade
    • Dissipate Heat
      • Evaporate from mouth, large ears, dark colours
    • Retain Water
      • Burrowing, food sources, solid wastes
    • Acquire Water
      • Plants (cacti), recycle water, retain moisture from air
    • Slow recovery time – poor resilience
    • Slow plant growth
    • Low species diversity
    • Slow nutrient cycling – little bacterial activity
    • Lack of water
    • Transition – desert and forest
    • annual precipitation suitable grasses
      • Seasonal drought
      • Grazing by large herbivores
      • Occasional fires
    • Tropical
    • Temperate
    • Tundra or polar
    http://earthobservatory.nasa.gov/Experiments/Biome/biograssland.php
    • Warm temperatures
    • Two-drought seasons
    • Wetter rest of year
    • Large herds of hoofed animals
    • Resource partitioning
    http://biomea.wikispaces.com/Grassland?f=print
    • Large plains of North and South America
    • Hot summers, cold winters
    • Uneven, sparse precipitation
    • Rich organic layers, fertile soil
    http://www.champaignschools.org/index2.php?header=./jefferson/&file=../staffwebsites/hamiltja/index http://www.fs.fed.us/wildflowers/regions/southwestern/MillsCanyon/images/mills_canyon_grassland_lg.jpg
    • Treeless plains
    • Extreme cold, ice, snow
    • Mainly snow, little precipitation
    • Most growth in 6-8 weeks
    • Permafrost – perennially frozen layer of soil
    • Animals – burrow, thick coats of fur, feathers
    • Decomposition slow
    • Low decomposer populations
    • Soil is poor – organic matter and nutrients
    • Tropical
      • Removal of grazers – cattle
      • Desertification
    • Temperate
      • Removal of grazers, fire, convert to pasture
      • Soil erosion – Dust Bowl
    • Tundra
      • Soil disturbance
      • Resource development – Oil and Gas
    • Moderate to high precipitation
    • Levels of trees and lower vegetation
    • Tropical
    • Temperate Deciduous
    • Evergreen Coniferous
    http://www.tropicalisland.de/borneo.html http://www.geography.hunter.cuny.edu/~tbw/wc.notes/15.climates.veg/notes_chap15.htm
    • Equatorial
    • Hot, moisture-laden air
    • Daily rainfall
    • Broadleaf evergreen plants
    • Shallow roots, wide bases
    • Dense canopy
    • Epiphytes, vines
    • 2% land surface, half biodiversity
    • Little litter, rapid decomp
    http://travelwithkids.about.com/od/stluciaresorts/ig/Coconut-Bay-/Rainforest---zip-line.htm http://www.geography.hunter.cuny.edu/~tbw/wc.notes/15.climates.veg/veg.images/rainforest/huge.tree.cut.down.jpg
    • Warm summers, moderate-cold winters
    • abundant precipitation, even distribution
    • Broadleaf deciduous
    • More leaf litter, slow decomposition
    • Richer ground layer
    • Most upper-level predators removed
    • Evergreen coniferous
    • Cone-bearing, needles
    • Northern hemisphere, south of tundra
    • Adapted to short summers
    • Diversity low
    • Deep layer of needles – duff
    • Acid soil, nutrient poor
    • Bogs, water-logged soil
    http://wc-zope.emergence.com:8080/WildernessCommittee_Org/campaigns/wildlands/boreal/reports/Vol11No07/deforestation http://nrm.salrm.uaf.edu/~dverbyla/bnz_synthesis_CD/chapter9/index.html
    • 25% land surface
    • Extreme variations – short distances
    • Climate, vegetation, soil
    • Active geomorphic processes
    • Islands of biodiversity – forests
    • Endemic species
    • Control hydro cycle
    http://vulcan.wr.usgs.gov/LivingWith/Historical/LewisClark/volcanoes_lewis_clark_october_30_1805.html http://www.smh.com.au/articles/2006/06/07/1149359779154.html
      • www.sustainableplanet.yolasite.com
    • Thanks for viewing!