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World Biomes. Tropical Rainforest Location: Found near equator…little variation in temperatures. No.

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Presentation on theme: "World Biomes. Tropical Rainforest Location: Found near equator…little variation in temperatures. No."— Presentation transcript:

1 World Biomes

2 Tropical Rainforest Location: Found near equator…little variation in temperatures. No distinct seasonal changes. Earth's most complex land biome

3 Tropical Rainforest Abiotic factors both hot and moist; Good place for bacteria and other microorganisms; they quickly decompose matter on the forest floor allowing nutrients to be recycled. <1 cm of topsoil About 100 in/yr of rainfall

4 Bougainvillea  Sunlight is a major limiting factor….this means that not all the plants get as much sunlight as needed  Plants grow in layers (canopy receives most light)  Shallow, wide roots since soil is so thin and poor in nutrients  Little sun reaches the floor Tropical Rainforest Plant adaptations Bangul Bamboo

5  Many symbiotic relationships  Live in different levels of canopy Wagler’s pit viper Silvery Gibbon Slender Loris Tropical Rainforest Animal Adaptations Many animals are specialists and require special habitat components to survive Camouflage is common

6 Threats to the Tropical Rainforest HHumans strip the rainforests for uses including logging and cattle ranching. IIn addition to the plants and animals that are displaced by this destruction, entire civilizations of people are also without a home. YYou can help by promoting sustainable use of the rainforests’ products

7 Benefits from the Rainforests More than 20 percent of the world oxygen is produced in the Amazon Rainforest….known as “Lungs of our Planet.” One-fifth of the world's fresh water is in the Amazon Basin Currently, 121 prescription drugs currently sold worldwide come from plant-derived sources. The U.S. National Cancer Institute has identified 3000 plants that are active against cancer cells. 70% of these plants are found in the rainforest.

8 Temperate Deciduous Forests Location:  found in temperate zone (about 48 0 North lat)  Much of the human population lives in this biome

9  Characterized by an abundance of deciduous (leaf bearing) trees Characterized by 4 seasons  Soils: Deep soil layers, rich in nutrients  Precipitation: 30–100 in/yr in all forms (snow, rain, hail, fog, etc.) Temperate Deciduous Forests Abiotic Factors

10 Trees adapt to varied climate by becoming dormant in winter White Birch Birch page.htm Lady Fern Geulder Rose Temperate Deciduous forest Plant adaptations Deciduous forests grow in layers More sunlight reaches the ground compared to a rainforest so you will find more ground dwelling plants.

11  Lose Winter Coat  Adapt to many seasons  Eat from different layers of the forest Bald Eagle Fat Dormouse Least Weasel Temperate Deciduous Forest Animal Adaptations

12 Threats to Temperate Deciduous Forests Many forests are cleared to provide housing for humans. Careful use of the resource can provide a renewable system if we don’t take too much habitat away.

13 Benefits of the Deciduous Forests We rely on oxygen from the trees in these forests, especially in the US. Major products of a Deciduous Forest are lumber, paper, rocking chairs, Maple Syrup, and musical instruments.. Wood is major product in our everyday life. Without wood our lives would be very different most people wouldn’t have a house.

14 Taiga aka Northern Coniferous Forest or Boreal Forest Location: Found only in Northern Hemisphere

15 Taiga Abiotic factors  Winters are long and cold  Averages 100 in/yr precipitation— mostly snow  Soil poor in nutrients and very acidic  Growing season is very short ecosystems_biomes/biomes_northern_forest.html

16 Balsam Fir  Coniferous (needle-bearing) trees are abundant  Roots long to anchor trees  Needles long, thin and waxy  Low sunlight and poor soil keeps plants from growing on forest floor Fireweed Taiga Plant adaptations

17 Moose  Adapt for cold winters  Burrow, hibernate, warm coat, insulation, etc. Great Grey Owl Animal Adaptations of the Taiga

18 Threats to the Taiga Mining operations can irreparably damage this fragile ecosystem. Pollution left behind can also put animals and plants at risk. tm

19 Benefits of the Taiga Trees of the Taiga provide wood pulp to make paper, timber for construction, and logs for burning as fuel. They also provide resins for glues, fragrances, and medicines. They help inmaintaining the quality of the air around us, preserving the cleanliness of water in lakes and rivers, and slowing runoff to prevent flooding.

20 Desert Ecosystems  Location: Depending on type of desert, you will find them in various locations.

21 Desert Abiotic factors  <10 in/yr of rain  Little to no topsoil due to high winds.  Minerals not deep in soil.  Too dry for decay /taiga.html While there are many types of deserts, they all share one characteristic: They are the driest places on Earth!

22 Joshua Tree Desert Plant Adaptations:  Spines  Succulents  Thick, waxy cuticle  Shallow, broad roots Barrel Cactus  Ocotollio

23 Desert Animal Adaptations:  Get water from food  Thick outer coat  Burrow during day  Large ears  Smaller animals = less surface area Javelina Bob Cat Armadillo Lizard

24 Threats to the Desert Residential development Off road recreational activities destroy habitat for plants and animals. Some plants are removed by collectors, endangering the population. Sonoran Desert Dry Desert

25 Benefits of the desert Deserts are ideal places for natural preservation of artifacts and fossils.

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