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AP Biology, Biomes of the World
Transcript of AP Biology, Biomes of the World
The distribution of tropical forests is that they are along the equatorial and subequatorial regions.
The native plants in tropical forests are Broadleaf Evergreen Trees as well as Epiphytes such as orchids and bromeliads.
The native animals that populate tropical forests include: amphibians, birtds, and other reptiles, mammals, and athropods.
The average percipitation in tropical forests is different between tropical rain forests and tropical dry forests. In tropical rain forests, the anual rainfall is about 200-400 cm annually and for tropical dry forests it is about 150-200 cm annually.
Tropical forests have an average temperature of about 25-29 degrees Celcius.
This biome is globally important because it is home to many of the worlds organisms and the land is needed to establish human communities. Savanna:
The distribution of savannas is that they are in areas of the equatorial and subequatorial regions.
Native plants found in the savanna are usually very thorny with reduced leaf surface area. Grasses and forbs make up most of the ground covering in savannas.
Animals native to the savanna include many herbivorous such as, wildebeasts, zebras, and termites. Savannas are also home to predators, like, lions and hyenas.
The average percipitation in savannas is about 30-50 cm of rain annually.
Savannas have an average temperature of 24-29 degrees Celcius.
Savannas are important to humans because they are used as hunting grounds and ground for cattle ranching. Desert:
Deserts are most commonly found in a band near 30 degrees North and South latitiudes, or at other latitudes in the interior of continents.
Native plants in deserts are usually deeply rooted shrubs, herbs, and cacti.
Animals that are native to deserts are usually snakes, lizards, scorpions, ants, beetles, migratory and resident birds, and seed-eating rodents.
Deserts are very dry, therefore, they receive very little rain annually. The annual rainfall in deserts are less than 30 cm per year.
Deserts can be either very cold or extremely hot. So, the average temperature can be either -30 degrees Celcius, up to 50 degrees Celcius.
The desert biome is so important because it allows certain types of organisms to adapt and make deserts suitable living conditions. They are also important to humans because humans are beginning to urbanize in desert areas for use of irrigated agriculture. Chaparral:
Chaparrals are most commonly found in midlatitude coastal regions on several of the seven continents. These continents and countries include: North America, Spain, Chile, South Africa, and the southern part of France.
The plants that are native to the chaparral are of small shrubs and small trees. Chaparrals have a very high diversity of grasses and herbs.
With the fact that chaparrals is home to many grasses, the animals that are native are browsers, such as deer, goats, small mammals, amphibians, birds, reptiles, and insects.
The annual percipitation in chaparrals is anywhere from 30-50 cm.
Chaparrals have two different average temperatures depending on whether it is fall, winter, and spring, or if it is summer. During the fall, winter, and -spring, the average temperature is anywhere from 10-12 degrees Celcius and in the summer, the average temperature is anywhere from 30-40 degrees Celcius.
Chaparrals are needed for different types of animals to strive. The features of chaparrals make it possible for only certain types of plants and animals to live. Chaparrals are also important to humas for use of agriculutre and urbanization. Temperate Grassland:
Temperate grasslands are distributed along veldts of South Africa, puszta of Hungary, pampas of Argentina and Uruguay, steppes of Russia, and plains and prairies of central North America.
Temperate grasslands are home to the dominant plants of grasses and forbs.
They are also home to the native to animals such as, bison, wild horses, and prairie dogs.
Rainfall in temperate grasslands in anywhere from 30cm - 100 cm annually.
The average temperature in temperate grasslands also changes during the winters and summers. In the winters, the average temperature is about -10 degrees Celcius and during the summers, it is about 30 degrees Celcius.
This biome is so globally important because it is used for agriculture, farmlands, land to grow grains, and it is home to many specific animals, like the prairie dog. Temperate broadleaf forest (deciduous) :
Distribution of temperate broadleaf forests are in areals that are midaltitude in the Northern Hemisphere, and smaller areas in New Zealand and Australia.
Deciduous forests have an unique plant level system. It first has a closed canopy, then it has one or two strata of understory trees, followed by a shrub layer, and an herbaceous stratum. In these layers, the native plants are deciduous trees in the Northern Hemisphere and Evergreen eucalyptus trees in Australia.
Deciduous forests are home to many natie animals such as, bears, beavers, foxes, deer, rats, snakes, mice, wolves, raccoons, Easterngray squirrels, the Bald Eagle, Nightingales, Cardinals, hawks, and the Snowy Owl.
Annually, the rainfall in temperate broadleaf forests range from 70-200 cm.
The winters and summers in temperate broadleaf forests are different as well. In the winter, the average temperature is 0 degrees Celcius and in the summer, the average temperature is 30 degrees Celcius.
This biome is important because there are only so much of it left because they are used for logging, and land clearing for agriculture and urban development.
Coniferous forest (taiga):
Coniferous forests are distributed in a broad band across northern North Ameria and Eurasia, and on the edges of the artic tundra.
Native plants to the Taiga forest are: Pine trees, Spruce, Fir, and Hemlock.
Moose, Brown bears, and Siberian tigers are native to the Coniferous forest.
Annually, the Tiaga forest receives on average 30-70 cm of rain.
Some coniferous forests may be warmer than others, but there are places where the winter gets to be as cold as -70 degrees Celcius and the summer being less than 10 degrees Celcius.
Taiga forests are important because today, they are used by humans for logging. The Taiga forests is also home to many native animals that can only be found in Tiaga forests.
Tundras are found in expanisve areas of the artic and the very high mountain tops at all latitudes, including the tropics.
Tundras are exposed to contiunous cold, so the only plants to strive there are lichens, mosses, grasses, forbs, drawf shrubs, and drawf trees.
Considering the fact that tundras are home to such herbaceous plants, the tundra's native animals are grazing animals, such as the musk, ox, caribou, and the reindeer. Along with herbaceous animals, the tundra is also home to predators, like, bears, wolves, and foxes.
Rainfall differs from the Artic Tundra to the Alpine Tundra. In the Artic Tundra, annual rainfall is about 20-60 cm, while at the Alpine Tundra the annual rainfall is about 100 cm.
Tundras are globaly important because it houses many animals where it would be hard for them to strive elsewhere. Tundras are also used by humans for extraction of minerals and oil. Alpine Tundra Artic Tundra