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Dannielle Geronimo

on 10 October 2014

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Transcript of GRASSLAND

Grasslands are found in areas where there is not enough regular rainfall to support the growth of the forest, but not so little to form a desert.
It exist in each continent, except Antarctica.
There are two types of grassland biome; Tropical grassland and Temperate Grassland.
Tropical Grassland
Located near the Equator, and tropical areas like Africa and Australia.
Warm year round: 60°F or warmer.
Annual rainfall is 20-50 inches.
Overall dry, but the rainy season last about 6-8 months a year.

Tropical grasslands are dominated by 3-6 feet tall grasses. the types of grasses that reside here are: Rhodes grass, Red Oat grass, Blazing stars, and Lemon grass.
Animals that resides here are: giraffes, zebras, buffalo, leopards, hyenas, elephants, and lions.
Temperate Grassland
This grassland has two seasons: growing season and dormant season (no grass will grow due to cold temperatures.)
During the dormant season, the temperature can drop down to -40°F and an average of 75°F during the growing season.
Annual Rainfall: 10-35 inches
Different types of grasses are the dominant vegetation in the temperate grasslands. Grasses like Purple Needle grass, Blue Grama, Buffalo grass, and Galleta grass can be seen here.
There is a low diversity of wildlife in this grassland. Gophers, Prairie dogs, badgers, ferrets, wolves, cayotes, and birds like meadowlarks, quails, sparrows, and hawks may be seen here.
Grassland Biodiversity(animals)
Habitat Diversity
Grassland Food Web
Keystone Species
Why these species are important
There is a variety of different animals that live in this biome, such as Lions, Cheetahs, Zebras, Prairie dogs and many more.
There are two types of grasslands. Which are temperate grasslands and tropical grasslands, also called savannas. Temperate grasslands are cold and hot. On the other hand tropical grasslands are wet and dry.
Grassland Biodiversity (Plants)
There is also a variety of plants that live in grasslands, such as Blue Grama, Buffalo Grass, Big Blue Stem, Switch Grass, Little Blue Stem, and much more.
In the Grassland biome humans will typically use the grassland area to farm, build communities, and build resources like power plants.
Human and Natural Threats
Humans are the biggest threat to all biome specially the grassland biome. Grassland biome offer the ease of flat land and moderate climate. This makes farming very easy.
Urban development has caused 25% disappearance of grassland biome due to:
power plants
and permanent urban development
Threats to Tropical Grasslands
The biggest threat to tropical grasslands are humans due to poaching of endangered species.
Elephants prevent trees from growing by grazing them. They help grasslands by stopping trees from growing, which would cause them to become forest.
Prairie dogs are essential because they help the soil and water quality by foraging, which retains water in the soil and forces fresh new grasses to continue to grow.
Prairie Dogs
This food web consists of the producers, which is the grass and trees. Then the primary consumers, which are zebras (herbivores) and elephants (herbivores) that eat grass or dispose of the trees. The secondary consumers, such as the cheetahs (carnivores). who feed on zebras and other animals.Let’s not forgot about the scavengers, such as the hyena, which feed on other animals,
Humans being the biggest problem to this biome, we need to have control over the human interaction in all grasslands. We need tougher rules, laws, guidelines when building, farming, and hunting.
Karina Roman
Dannielle Geronimo
Andres Lopez
Full transcript