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THE DESERT BIOME
Transcript of THE DESERT BIOME
1st hour The Desert Biome Location Abiotic Factors Resource Availability It is a contest between organisms for territory, resources, and sunlight. Competition- One of the most famous desert biomes is in the
Mojave desert, which is in the United States. Biotic Organisms Biotic Organisms- Consisting of living organisms. An ecosystem is made up of a biotic community (all of the naturally occurring organisms within the system) together with the physical environment. gila monster fennec fox scorpion elf owl hawk popcorn flower organ pipe cactus fairy duster morman tea barrel cactus Abiotic factors- a nonliving condition or thing , as climate or habitat, that influences or affects an ecosystem and the organisms in it. In the desert, the abiotic, or non living factors are the soils, and sand, sunlight, the temperature, and the air,& winds. This affects the biotic factors because, the abiotic factors help things grow. Food Web One human threat to the desert is that global warming could cause a several draught to the desert, killing all the animals.another human threat is irrigation. Deserts have very little rainfall and if it is all used in irrigation, the landscape will suffer. An example of competition in the desert biome is when eagles and rattlesnakes compete for birds, and birds and worms compete for the fruit of the prickly pear. Predation - predation describes a biological interaction where a predator ( an organism that is hunting) feeds on its prey. An example is when a rattlesnake is eating a kangaroo rat. Parasitism- a symbiotic relationship in which one organisms benefits are the expense of another organism. An example of paratism is fleas on a kangaroo rat. The fleas benefit by drinking the blood of the kangaroo rat. The kangaroo rat dose not benefit, if it looses too much blood it will die. Commensalism- It is a class of relationship between two organisms where one organism benefits without affecting the other. It compares with mutualism, in which both organisms benefit, and parasitism, when one benefits while the other is harmed. an example of commensalism in the desert biome is a hawk building its nest on a saguaro cactus Mutualism- It is the way two organisms of different species exist in a relationship in which each individual benefits. Similar interactions within a species are known as co-operation. An example of mutualism in the desert biome would be bees pollinating cacti flowers, and owls nesting in the cactis. Environmental Issues Lack of water prevents a desert from supporting much plant and animal life, although some species thrive in this environment. Burgeoning human populations on the edges of the desert strain the water supply, which affects the already sparse flora and fauna. Intresting / Fun facts * The giant saguaro cactus can grow 50 feet tall, and live for 200 years. * Plants that store water in their stems are called succulents. *Some desert trees have deep taproots that grow up to 30 feet deep in order to find water.
*The elf owl will sometimes live inside a cactus during the day and then come out at night to hunt.
*Dust storms from the Gobi Desert have been known to reach Beijing, China nearly 1,000 miles away.
*Camels can go without water for a week. A thirsty camel can drink 30 gallons of water in less than 15 minutes.