6) People & The Biosphere Flashcards
What are biomes?
Large scale ecosystems that have distinctive vegetation
What are the 4 major biomes?
Hot desert
Grasslands
Forests
Tundra
What are features of the tundra?
Long summer days, short winter days
Below freezing winters
Not much rain
Permafrost layer beneath soil
Where are temperate deciduous forests found?
Europe, USA, China
What are features of deciduous forests?
4 seasons with shedding leaves in winter
Rainfall all year
Where are tropical rainforests found?
Near the equator
Hot with high humidity
What are features of grasslands?
Wet season and dry season
Few trees
Between latitudes +23.5 and -23.5
What are features of hot deserts?
No rainfall, hot in day, freezing at night
Plants are heavily adapted to lack of water
What factors effect biome distribution?
Climate Altitude Rock types Soil types Drainage
Where is nutrient rich soil found?
Where there are easily eroded rocks
What 2 components are biomes made up of?
Biotic
Abiotic
What are biotic components?
Living- plants (flora) and animals (fauna)
What are abiotic components?
Non-living- soil, rock, atmosphere, water
How does vegetation and soil effect where plants can live?
They determine how much dead matter is created and how much rainfall washes away the soil
What is the fauna like in tropical rainforests?
Full of biodiversity
What is the flora like in tropical rainforests?
Plants always grow as climate is the same all year
Battle for sunlight
Interdependence between vegetation on floor
What is the climate in tropical rainforests?
21 - 30 degrees year round
Up to 80 inches of rainfall a year
Rain washes away nutrients in soil
What are evergreen plants?
Plants that don’t shed their leaves in winter
Why do temperate forests have nutrient rich soil?
Leaf litter is broken down in autumn
What are boreal forests also called?
Taiga
What is the flora like in boreal forests?
Evergeen pine trees
What is the fauna like in boreal forests?
Species adapted to cold climate