Land Biomes! 20-1 Different ecosystems are home to different kinds of organisms! The animals and plants that live there do so because of adaptations that allow them to survive in that environment! The combo of abiotic and biotic factors make each biome different! Remember...A Biome is a group of ecosystems with the same climate and similar communities There are Land Biomes and Aquatic Biomes! The Land Biomes are as follows: 1.) Forests: ~ Temperate Deciduous Forests ~ Coniferous Forests ~ Tropical Rainforests 2.) Grasslands: ~ Temperate grasslands ~ Savannas 3.) Deserts 4.) Tundra
Land Biomes! 20-1. Different ecosystems are home to different kinds of organisms!. The combo of abiotic and biotic factors make each biome different!. The animals and plants that live there do so because of adaptations that allow them to survive in that environment!. - PowerPoint PPT Presentation
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Land Biomes!20-1
Different ecosystems are home to different kinds of organisms!
The animals and plants that live there do so because of adaptations that allow them to survive in that environment!
The combo of abiotic and biotic factors make each biome different!
Remember...A Biome is a group of ecosystems with the same climate and similar communities
Animals you may find here:~ spadefoot toad~ jack rabbit~ roadrunner~ cactus wren~ desert tortoise~ thorny devil lizard
Let's see a video about the desert! (real player)
Tundra Biome
Characteristics:~ Extremely cold climate ~ Low biotic diversity ~ Simple vegetation structure ~ permafrost - layer of ground is frozen permanently!~ Short season of growth and reproduction~ Avg. rainfall 12-20 in~ Temps very cold year round -15 oF to 54of
Tundra is separated into 2 areas:Alpine and Arctic
Alpine Tundra: found at the top of large mountains above the tree line
Plants you may find there:~tussock grasses ~dwarf trees~ small-leafed shrubs
Animals you may find there:~ mountain goat~ elk~ butterflies~ grouse
Arctic (Polar) Tundra:~ found near the North and South poles
Plants you may find here:~ 400 varieties of flowers~liverworts~low shrubs
Animals you may find here:~ arctic foxes, wolves, and polar bears~ falcons, loons, sandpipers~ arctic bumble bees~ caribou, arctic hares
Let's see a video clip about the tundra! (real player)
Marine Ecosystems
20-2
Marine is a word used to describe the water in the world's oceans.
The oceans hold the largest and smallest animals on the planet!The oceans are shaped by abiotic factors:
~Water Temperature~ Water Depth~ Amount of sunlight passing through the water column
Plankton - tiny organisms that float near the surface of the water
~ most plankton are producers~ many organisms rely on
plankton for food!
Water Temperatureand Depth
Water temp. decreases as the depth increases
~ because of this, different animals live at different depths and temperatures!
Too hot or cold may cause some org. to stop eating or die!
4 Main Zones of the Ocean:
1.) Intertidal
~Where the ocean meets the land~ waves always present~ animals and plants adapted to live in this
environment can survive the waves and being exposed to air for part of the day.
~ Plants: plankton, Sargasso seaweed 3.) Oceanic Zone
~ deep water of open ocean~ this zone can be thousands of feet deep!
~ Animals: Whales, sharks, jellyfish, squid
~ Plants: Plankton may float close to the top, kelp, seaweed, and seagrass
sea grasskelp
4.) Bethnic Zone~ the deep ocean floor~ deepest parts do not get any sunlight!~ Highly adapted org. live here - very cold and dark~ some have thermal vents that spew out boiling water and
minerals! Much of the life on the ocean floor thrives in these extreme environments - extremophiles! (remember?!)
~ Animals: worms, sea urchins, various fish
~ Plants: None!! It's too dark!
Animals eat each other or get nutrients from things that float down from the thsurface!
Giant isopod
Dumbo octopus
Gulper eel
http://www.youtube.com/watch?v=u64ppKBY3cM
Let's see more! (real player)
Let's learn more about the coral reef!(real player - coral reefs)
Freshwater EcosystemsMost water on land is freshwater
~ streams~ rivers~ lakes~ swamps~ ponds
The water in streams and rivers is generally moving from fairly slowly to rapidly downhill.
Where does the water come from?
Springs
Rain
Snow melt
Each stream of water that joins another larger stream is called a tributary.
The large river is the Mississippi River
The smaller rivers like the Ohio River, Missouri River, Red River etc. feed into the Mississippi River...they are it's tributaries!
The freshwater ecosystems are characterized by their abiotic factors:
~How quickly the water moves - streams and rivers:
* certain plants and animals live in different velocities of water
*some can live in slow moving water, others can survive fast moving water like rapids!
The tributaries are fed by the water in their surrounding watersheds.~ an area of land from which the water flows into the brooks,
streams, and rivers~ The green area around the Miss. R. in the picture is it's
watershed!
Animals in streams and rivers:~ fish~ snails~ crayfish~ clams~ insects~ frogs and tadpoles
Ponds and Lake Ecosystems
~ these ecosystems are different from those in streams and rivers
~ the water does not flow in these areas - the water is still
Stream and River Ecosystems:
3 Zones:1.) Littoral zone - area of water closest to the
edge* algae and plants like cattails and rushes
grow here* snails, insects, small fish, salamanders,
and turtles live here too!
2.) Open-water Zone~ across the top of the water and
down as deep as the sunlight reaches
~ fishes and photosynthetic plankton live here
3.) Deep-water Zone* under the open-water zone* no sunlight penetrates here* Catfish, Carp, worms, crustaceans, fungi, and bacteria live here* These org. usually eat dead org. that sink to the bottom
Wetland Ecosystem!
Wetland - area of land that is sometimes underwater or contains a great deal of moisture
Important facts:~ supports many different animals and plants~ help with regional flood control by soaking up large
amounts of water after heavy rains or snowmelt~ help filter the water supply and replenish groundwater
2 Types of Wetlands:
1.) Marshes
* mostly grasses, algae, reeds, wild rice, and other low plants thrive
* No trees!
* found in shallow areas along shores of lakes, ponds, rivers and
streams
* common animals are muskrats, turtles, frogs, and birds
2.) Swamps
* Has trees and vines - bald cypress, willows, oaks, poison ivy
* may also have water lilies and duckweed
* usually found beside slow-moving rivers in low-lying areas
* flooded part or most of the year
* common animals are alligators, herons, snakes, frogs, salamanders
Let's check out some more about the Wetlands!(real player)