Biomes of the World
Savanna
Coniferous Forest
Marine
Salt Water
• Name: Fresh Water
• Location: ponds, lakes, streams, rivers, wetlands (marshes,
swamps) all over the world; special ecosystem is estuaries –
where fresh water and salt water mix (mouth of rivers)
• Climate: shallow water is warm with lots of sunlight, some
lakes are very deep with cold water; winds mix layers and
circulate O2, ponds and lakes can freeze in winter; many
rivers begin with mountain snowmelt making them very cold
and clear at the source, warmer and muddier at the mouth
• Plants: algae, moss, phytoplankton, water lilies, cattails;
cypress, birch, willow trees in wetlands
The Nile River
• The Nile, the world’s
longest river, flows
northward through the
eastern Sahara Desert.
• Water from the Nile is
used for irrigation of
surrounding farmland.
• Irrigation - transporting
water for crops
The Nile River
Nile River Predators
Amazon River
• The Amazon River is the 2nd longest in the
world! It’s length reaches 4,195 miles.
• It’s temperatures usually reach as high as 900F
in summer but can fall below freezing during
winter.
• It contributes 20% of the world’s freshwater
into the ocean.
• The river is home to many odd creatures
including anacondas, piranhas, & pink river
dolphins.
• The river is the “highway of the Amazon” used
for transporting people and goods throughout
South America.
• Animals: zooplankton, insect eggs, amphibians, fish, birds
(ducks, swans, flamingos), crustaceans,, turtles, snakes
• Biodiversity: very diverse with over 15,000 species of fish;
underwater breathing with gills; humans are completely
dependent on this biome to survive
• Human Impact: pollution from runoff or sewage, overfishing,
introducing non-native species
Rainbow Falls
Kahuna Falls
• Waterfalls
Akaka Falls
Rafting the Snake River
What Disney
movie takes
place in the
Fresh Water?
What Disney
movie takes
place in the
Fresh Water?
TEKS 7.10B
• Describe how biodiversity contributes to the sustainability of an ecosystem.
• Which biome has the most biodiversity?
Marine and Tropical Rain Forest
• Which biome has the least biodiversity?
Tundra
• How does biodiversity affect the sustainability of each biome?
• The more diverse (more living things), the more stable a biome is. The more plants and animals
there are, the more food choices are available.
• As biodiversity increases, sustainability also increases. (same for decreasing)
Biodiversity
Biodiversity
Sustainability
Sustainability